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beruecksichtige naturwissenschaftliche Journale:
International Journal of Chemical Kinetics - published by
Wiley-Interscience -
... publishes original research in gas phase, condensed phase, and polymer reaction kinetics, as well as biochemical and surface kinetics.
Reaction Kinetics and Catalysis Letters - published by
Springer -
... is a medium for the rapid publication of original contributions in such fields as kinetics of homogeneous reactions in gas, liquid and solid phase; homogeneous and heterogeneous catalysis; adsorption in heterogeneous catalysis; transport processes related to reaction kinetics and catalysis; preparation and study of catalysts; reactors and apparatus.
Aktuelle wissenschaftliche Fachartikel der
genannten Journale:
Abstract Amine functionalized silica catalysts (3-aminopropyltrimethoxysilane (APTMS)) NH2/SiO2, (Diazabicycloundecene/SiO2) DBU/SiO2 and (1,5,7-triazabicyclo[4,4,0]dec-5-ene/SiO2) TBD/SiO2, which were characterized by 29Si NMR, element analysis and indicator dye adsorption, were prepared by ultrasonic technique under mild conditions. Such hybrid
solid bases showed high catalytic activity and good reusability towards for the synthesis of propylene glycol methyl ether.
Content Type Journal Article
DOI 10.1007/s11144-009-0086-1
Authors
Xuehong Zhang, Shijiazhuang University Chemistry Department 050031 Shijiazhuang China
Wenguang Cui, Shijiazhuang University Chemistry Department 050031 Shijiazhuang China
Weirong Han, Shijiazhuang University Chemistry Department 050031 Shijiazhuang China
Yunxiao Zhang, Shijiazhuang University Chemistry Department 050031 Shijiazhuang China
Shubin Liu, Shijiazhuang University Chemistry Department 050031 Shijiazhuang China
Wei Mu, Shijiazhuang University Chemistry Department 050031 Shijiazhuang China
Yongfang Chang, Shijiazhuang University Chemistry Department 050031 Shijiazhuang China
Ruisheng Hu, Shijiazhuang University Chemistry Department 050031 Shijiazhuang China
Abstract The homogeneous catalytic system, based on water-soluble ruthenium(II)–TPPTS catalyst (TPPTS = meta-trisulfonated triphenylphosphine),
selectively decomposes HCOOH into H2 and CO2 in aqueous solution. Although this reaction results in only two gas products, heterogeneous catalysts could be advantageous
for recycling, especially for dilute formic acid solutions, or for mobile, portable applications. Several approaches have
been used to immobilize/solidify the homogeneous ruthenium–TPPTS catalyst based on ion exchange, coordination and physical
absorption. The activity of the various heterogeneous catalysts for the decomposition of formic acid has been determined.
These heterogenized catalysts offer the advantage of easy catalyst separation/recycling in dilute formic acid, or for mobile,
portable applications.
Content Type Journal Article
DOI 10.1007/s11144-009-0096-z
Authors
Weijia Gan, École Polytechnique Fédérale de Lausanne (EPFL) Institut des Sciences et Ingénierie Chimiques 1015 Lausanne Switzerland
Paul J. Dyson, École Polytechnique Fédérale de Lausanne (EPFL) Institut des Sciences et Ingénierie Chimiques 1015 Lausanne Switzerland
Gábor Laurenczy, École Polytechnique Fédérale de Lausanne (EPFL) Institut des Sciences et Ingénierie Chimiques 1015 Lausanne Switzerland
Abstract Reactions of cis,trans,cis-[Ir(H)2(PPh3)2(MeOH)2]PF6 in MeOH with the imines Ph(R′)C=NR under 1 atm H2 precipitate the neutral, Ir(III)-dihydrido complexes [Ir(H)2{RN=C(R′)(o-C6H4)}(PPh3)2], where R = alkyl or benzyl, and R′ = Ph, H, or Me; the dihydrides are well characterized through elemental analysis, NMR and IR data
and, in one case, with the imine Ph2C=NCH2Ph, an X-ray structure. These products are formed via intermediate ortho-metallated species, exemplified by [Ir(H){PhCH2N=CPh(o-C6H4)}(PPh3)2(MeOH)]PF6 in the case of the Ph2C=NCH2Ph reaction; the intermediate then reacts with H2 (via net heterolytic cleavage: H2 → H− + H+) to give the neutral dihydride and HPF6 as co-product. The ‘unique’ imine PhCH=NPh, under the same conditions, does not form a dihydride and instead is readily catalytically
hydrogenated to PhCH2N(H)Ph; remarkably, we have shown previously that this imine is ‘unique’ within the corresponding Rh system in that no catalytic
hydrogenation occurs because the amine product ‘poisons’ the Rh centre by coordination through the N-phenyl ring.
Content Type Journal Article
DOI 10.1007/s11144-009-0095-0
Authors
Paolo Marcazzan, University of British Columbia Department of Chemistry Vancouver BC V6T 1Z1 Canada
Brian R. James, University of British Columbia Department of Chemistry Vancouver BC V6T 1Z1 Canada
Abstract The photocatalytic properties of nanocrystalline TS-1 were confirmed via the degradation of an aqueous solution of the model
compound methyl orange (MO). The light intensity and quantum yield were measured by ferrioxalate actinometry and the values
are 1.7 × 10−5 einstein l−1 s−1 and 0.71, respectively. The experimental parameters such as catalyst loading, pH and initial concentration of MO were optimized
at 1.5 g/L, 10 and 300 μM, in order. The results showed that the dye molecules are completely degraded to CO2, H2O and simple inorganic ions.
Content Type Journal Article
DOI 10.1007/s11144-009-0087-0
Authors
Hsiu-Ling Hsu, Lunghwa University of Science and Technology Department of Chemical and Materials Engineering 300, Wan-shou Rd., Sec. 1 Kueishan Taoyuan Taiwan
Rosilda Selvin, Lunghwa University of Science and Technology Department of Chemical and Materials Engineering 300, Wan-shou Rd., Sec. 1 Kueishan Taoyuan Taiwan
L. Selva Roselin, National Central University Department of Chemical and Materials Engineering Jhong-Li 320 Taiwan
Prajitha Kumari, Lunghwa University of Science and Technology Department of Chemical and Materials Engineering 300, Wan-shou Rd., Sec. 1 Kueishan Taoyuan Taiwan
Jia-Wei Cao, Lunghwa University of Science and Technology Department of Chemical and Materials Engineering 300, Wan-shou Rd., Sec. 1 Kueishan Taoyuan Taiwan
Abstract This study addresses the photodegradation efficiency of bisphenol A (4,4′-isopropylidenephenol, BPA) and the generation of
hydroxyl radicals using the UV/TiO2 system. Photocatalysts were formed by the microwave/sol–gel method and TiO2 was prepared with anatase and rutile phases with a high surface area. The hydroxyl radicals generated by the preparation
of TiO2 by a microwave/sol–gel process, and its photoactivity, exceeded those of TiO2 prepared using a sol–gel process.
Content Type Journal Article
DOI 10.1007/s11144-009-0083-4
Authors
Han-Yu Lin, National Yunlin University of Science and Technology Graduate School of Engineering Science and Technology Douliou Yunlin Taiwan
Chao-Yin Kuo, National Yunlin University of Science and Technology Department of Safety Health and Environmental Engineering 123 University Rd., Sec. 3 Douliou 640 Yunlin Taiwan
Abstract Nanostructured ZnO thin films were deposited on glass by the dip-coating sol–gel method. The films exhibited pronounced activity
to destroy malachite green in water both under UV-light illumination and in the dark.
Content Type Journal Article
DOI 10.1007/s11144-009-0081-6
Authors
Nina V. Kaneva, University of Sofia Laboratory of Nanoparticle Science and Technology, Department of General and Inorganic Chemistry, Faculty of Chemistry 1164 Sofia Bulgaria
Georgi G. Yordanov, University of Sofia Laboratory of Nanoparticle Science and Technology, Department of General and Inorganic Chemistry, Faculty of Chemistry 1164 Sofia Bulgaria
Ceco D. Dushkin, University of Sofia Laboratory of Nanoparticle Science and Technology, Department of General and Inorganic Chemistry, Faculty of Chemistry 1164 Sofia Bulgaria
Abstract The gas-phase thermal decomposition of cis-2-methylcyclopropane carboxylic acid was investigated in the temperature range
692–753 K and pressure between 10 and 70 Torr. Arrhenius parameters were determined for homogeneous, unimolecular formation
of the isomeric products and for the overall loss-rate of the reactant. The determined values are in accordance with the Arrhenius
parameters that were reported previously for the thermal unimolecular reactions of cyclopropane and other substituted cyclopropanes.
The formation of isomeric products and the observed Arrhenius parameters are consistent with a biradical mechanism. The effect
of surface on the reaction was studied at 732 K using the packed reaction vessel. It was observed that the rate of production
of all isomeric products and the total loss of cis-2-methylcyclopropane carboxylic acid were not affected by increasing surface
to volume ratio.
Content Type Journal Article
DOI 10.1007/s11144-009-0091-4
Authors
Jan Nisar, University of Peshawar Gas-Phase Kinetics Research Laboratory, National Center of Excellence in Physical Chemistry Peshawar 25120 Pakistan
Mukhtiar Ali, University of Peshawar Gas-Phase Kinetics Research Laboratory, National Center of Excellence in Physical Chemistry Peshawar 25120 Pakistan
Iftikhar Ahmad Awan, University of Peshawar Gas-Phase Kinetics Research Laboratory, National Center of Excellence in Physical Chemistry Peshawar 25120 Pakistan
Amir Badshah, Quaid-i-Azam University Department of Chemistry Islamabad Pakistan
Sadullah Mir, Quaid-i-Azam University Department of Chemistry Islamabad Pakistan
Rafaqat Ali Khan, Quaid-i-Azam University Department of Chemistry Islamabad Pakistan
Abstract The activities of the Cu–Cr–Mg–Al catalysts in the dehydrogenation of cyclohexanol to cyclohexanone were correlated with particle
sizes and the reducibility of the copper species based on XRD and TPR characterizations. Cu0 was proven to be the active center of the catalysts calcined at low temperatures and some solid solution (MgCu2O3) and spinel (CuAl2O4 or MgAl2O4) were produced when the calcination temperature reached 1,000 °C. The Cu–Cr–Mg–Al catalyst prepared by the co-precipitation
method and calcined at 400 °C showed the best activity, with a conversion of 79.7% and a selectivity of 98.6% at 300 °C.
Content Type Journal Article
DOI 10.1007/s11144-009-0082-5
Authors
Guoyi Bai, Hebei University College of Chemistry and Environmental Science 071002 Baoding Hebei People’s Republic of China
Xinxin Fan, Hebei University College of Chemistry and Environmental Science 071002 Baoding Hebei People’s Republic of China
Hailong Wang, Hebei University College of Chemistry and Environmental Science 071002 Baoding Hebei People’s Republic of China
Fei He, Tianjin University School of Chemical Engineering and Technology 300072 Tianjin People’s Republic of China
Huisen Ning, Hebei University College of Chemistry and Environmental Science 071002 Baoding Hebei People’s Republic of China
Abstract The oxidative coupling of methane was investigated over alumina supported La2O3/CeO2 catalysts under microwave dielectric heating conditions at different oxygen concentrations. It was observed that, at a given
temperature using microwave heating, selectivities for both ethane and ethylene were notably higher when oxygen was absent
than that in oxygen/methane mixtures. The differences were attributed to the localised heating of microwave radiation resulting
in temperature inhomogeneity in the catalyst bed. A simplified model was used to estimate the temperature inhomogeneity; the
temperature at the centre of the catalyst bed was 85 °C greater than that at the periphery when the catalyst was heated by
microwaves in a gas mixture with an oxygen concentration of 12.5% (v/v), and the temperature difference was estimated to be
168 °C in the absence of oxygen.
Content Type Journal Article
DOI 10.1007/s11144-009-0089-y
Authors
Binghua Ni, Xi’an Shiyou University College of Chemistry and Chemical Engineering Xi’an 710065 China
Colleen Lee, Imperial College of Science, Technology and Medicine Department of Chemistry South Kensington London SW7 2AY UK
Run-Cang Sun, Beijing Forestry University College of Material Science and Engineering Beijing 100083 China
Xunli Zhang, Imperial College of Science, Technology and Medicine Department of Chemistry South Kensington London SW7 2AY UK
Abstract The reactivity of Lewis acidic ionic liquids for the acylation of acenaphthene to 3,6-dibenzoylacenaphthene was investigated.
Ionic liquids of different alkyl chain length and metal chloride were synthesized and tested for the reaction to discuss the
effects of Lewis acidity of the ionic liquid on the alkylation. Pure 3,6-dibenzoylacenaphthene was obtained and the structure
of 3,6-dibenzoylacenaphthene was identified by GC/MS, FT-IR and 1H NMR spectra. [Emim]C1/A1C13 ionic liquid was found to be the most active catalyst in the acylation. The yield of 3,6-dibenzoylacenaphthene was up to
89.6% and the selectivity towards 3,6-dibenzoylacenaphthene was up to 92.2%. The experiment shows that [Emim]Cl/AlCl3 can be used as both catalyst and solvent, it is reusable and environmentally friendly for the preparation of 3,6-dibenzoylacenaphthene.
Content Type Journal Article
DOI 10.1007/s11144-009-0088-z
Authors
Min Chen, Jiangsu University School of Chemistry and Chemical Engineering 301 Xuefu Road Zhenjiang 212013 Jiangsu People’s Republic of China
Lijing Huang, Jiangsu University School of Chemistry and Chemical Engineering 301 Xuefu Road Zhenjiang 212013 Jiangsu People’s Republic of China
Ying Luo, Jiangsu University School of Chemistry and Chemical Engineering 301 Xuefu Road Zhenjiang 212013 Jiangsu People’s Republic of China
Minqiang He, Jiangsu University School of Chemistry and Chemical Engineering 301 Xuefu Road Zhenjiang 212013 Jiangsu People’s Republic of China
Jimin Xie, Jiangsu University School of Chemistry and Chemical Engineering 301 Xuefu Road Zhenjiang 212013 Jiangsu People’s Republic of China
Xinhua Yuan, Jiangsu University School of Material Science and Engineering 301 Xuefu Road Zhenjiang 212013 Jiangsu People’s Republic of China
Abstract Acetylcholinesterase was immobilized by means of physical adsorption. The aim of this work is to describe the kinetic characterization
of the immobilized acetylcholinesterase. Here we report the effects of immobilization, carbaryl and its solvent dioxane on
the kinetic properties of acetylcholinesterase. The immobilized product has significant storage stability. Dioxane could decrease
the acetylcholinesterase activity and increase the inhibitory effect of carbaryl. Immobilization could change acetylcholinesterase
activity cooperatively. The inhibitory mechanism is hyperbolic noncompetitive. Carbaryl and dioxane could eliminate the substrate
inhibition by a competitive mechanism and by changing the native conformation of acetylcholinesterase.
Content Type Journal Article
DOI 10.1007/s11144-009-0094-1
Authors
Amir Norouzy, Babol University of Medical Sciences Department of Biochemistry and Biophysics Babol Iran
Durdi Qujeq, Babol University of Medical Sciences Department of Biochemistry and Biophysics Babol Iran
Mehran Habibi-Rezaei, University of Tehran School of Biology, University College of Science Tehran Iran
Abstract A 1,2-diaminocyclohexane–Pd complex was immobilized onto the surface of silica gel and investigated as a catalyst for Heck
coupling reactions. The immobilized catalyst exhibited high catalytic activity in the coupling of activated and nonactivated
aryl substrates with various acrylates. Moreover, the catalyst was air-stable that could be recycled and reused without significant
loss of catalytic activity.
Content Type Journal Article
DOI 10.1007/s11144-009-0085-2
Authors
Md. Nazmul Alam, Shahjalal University of Science and Technology Department of Chemistry, School of Physical Sciences Sylhet 3114 Bangladesh
Shaheen M. Sarkar, Inha University Department of Chemical Engineering Incheon 402-751 South Korea
Md. Rezwan Miah, Shahjalal University of Science and Technology Department of Chemistry, School of Physical Sciences Sylhet 3114 Bangladesh
Abstract Ni–La2O3/SiO2 catalysts (NLS) were prepared by the incipient-wetness impregnation method using EDTA salt precursors. XRD measurements revealed
that the promoter of La2O3 is highly dispersed on the NLS. The TPR profiles indicated a strong interaction between NiO and La2O3 to form a La–Ni complex oxide like species over the NLS, which may be the origin of its high catalytic performance.
Content Type Journal Article
DOI 10.1007/s11144-009-0090-5
Authors
Wanjin Yu, Zhejiang University Institute of Catalysis, Key Lab of Applied Chemistry of Zhejiang Province Hangzhou 310028 China
Yuzhan Xu, Zhejiang Education Institute Department of Chemistry Hangzhou 310012 China
Liuye Mo, Zhejiang University Institute of Catalysis, Key Lab of Applied Chemistry of Zhejiang Province Hangzhou 310028 China
Hui Lou, Zhejiang University Institute of Catalysis, Key Lab of Applied Chemistry of Zhejiang Province Hangzhou 310028 China
Xiaoming Zheng, Zhejiang University Institute of Catalysis, Key Lab of Applied Chemistry of Zhejiang Province Hangzhou 310028 China
Abstract Reaction kinetics and proposed mechanism for the oxidation of propane over diluted Mo1–V0.3–Te0.23–Nb0.125–Ox are described. The kinetic study allowed determination of the orders of propane disappearance, propene formation, COx formation, and acids formation. The results show that selective oxidation of propane to propylene over this catalyst follows
the Langmuir-Hinshelwood mechanism. Deep oxidation of propane to carbon dioxide is first order with respect to hydrocarbon,
and partial order (0.21) with respect to oxygen. The selective oxidation of propane to acrylic acid is half order with respect
to hydrocarbon and partial order (0.11) with respect to oxygen, while water does not participate directly in propane transformation.
The result also shows that the overall reaction consists of three parallel process channels. One main sequence of consecutive
reactions leads to the desired product.
Content Type Journal Article
DOI 10.1007/s11144-009-0092-3
Authors
Restu Kartiko Widi, University of Surabaya Department of Chemical Engineering TG Building 6th floor, Raya Kalirungkut Tenggilis Surabaya 60293 Indonesia
Sharifah Bee Abd Hamid, Institute of Postgraduate Studies, University of Malaya Combinatorial Technology and Catalysis Research Centre, COMBICAT 3rd floor, Block A 50603 Kuala Lumpur Malaysia
Robert Schlogl, Fritz-Haber-Institut Anorganische Chemie Faradayweg 4-6 14195 Berlin Germany
Abstract Nano-CeO2 with different crystallite sizes, surface areas and morphologies were synthesized with a hydrothermal method assisted by
carboxymethylcellulose sodium (CMC) at 110 °C. It was found that the reducible properties of CeO2 samples showed a significant influence on the active carbon (AC) combustion.
Content Type Journal Article
DOI 10.1007/s11144-009-0093-2
Authors
Jing Liu, Zhejiang University, Key Lab of Applied Chemistry of Zhejiang Province Institute of Catalysis 310028 Hangzhou People’s Republic of China
Lina Wang, Zhejiang Sci-Tech University Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education 310018 Hangzhou People’s Republic of China
Hongmiao Wu, Zhejiang University, Key Lab of Applied Chemistry of Zhejiang Province Institute of Catalysis 310028 Hangzhou People’s Republic of China
Liuye Mo, Zhejiang University, Key Lab of Applied Chemistry of Zhejiang Province Institute of Catalysis 310028 Hangzhou People’s Republic of China
Hui Lou, Zhejiang University, Key Lab of Applied Chemistry of Zhejiang Province Institute of Catalysis 310028 Hangzhou People’s Republic of China
Xiaoming Zheng, Zhejiang University, Key Lab of Applied Chemistry of Zhejiang Province Institute of Catalysis 310028 Hangzhou People’s Republic of China
Abstract Fe–Cr–O and Fe–Mg–O catalysts were used for hydrogen production via the water-gas shift reaction. Fe–Cr–O catalysts were synthesized
by different methods such as co-precipitation, impregnation and substitution technique. Catalysts were characterized by XRD,
TG, BET and TPR. Addition of Mg improved the catalytic activity of Fe–O by favouring the development of small and well dispersed
Fe particles (MgFe2O4). As a consequence, MgO prevented iron phase sintering in the presence of a large amount of water in the WGS reaction.
Content Type Journal Article
DOI 10.1007/s11144-009-0084-3
Authors
Amel Boudjemaa, Laboratoires C. G. N. et L. S. V. E. R., Faculté de Chimie, USTHB, BP32, El-Alia, Bab-Ezzouar, Algiers, Algeria
Aline Auroux, Institut de Recherches sur la Catalyse et l’environnement de Lyon, UMR 5256, CNRS-UCB Lyon1, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
Souhila Boumaza, Laboratoires C. G. N. et L. S. V. E. R., Faculté de Chimie, USTHB, BP32, El-Alia, Bab-Ezzouar, Algiers, Algeria
Mohamed Trari, Laboratoires C. G. N. et L. S. V. E. R., Faculté de Chimie, USTHB, BP32, El-Alia, Bab-Ezzouar, Algiers, Algeria
Ouiza Cherifi, Laboratoires C. G. N. et L. S. V. E. R., Faculté de Chimie, USTHB, BP32, El-Alia, Bab-Ezzouar, Algiers, Algeria
Rabah Bouarab, Laboratoires C. G. N. et L. S. V. E. R., Faculté de Chimie, USTHB, BP32, El-Alia, Bab-Ezzouar, Algiers, Algeria
Abstract The C–S coupling reactions of aryl benzenesulfonates with phenylmagnesium bromide in THF:toluene (7:10) at 90 °C have been
studied. A Hammett-type kinetic study of the leaving group effect of aryloxy groups provides a conclusive support for a two
step addition-elimination mechanism in which C–S bond formation is rate determining step.
Content Type Journal Article
DOI 10.1007/s11144-009-0053-x
Authors
Fatma Eroğlu, Science Faculty, Ankara University, 06100 Besevler, Ankara, Turkey
Didem Kâhya, Science Faculty, Ankara University, 06100 Besevler, Ankara, Turkey
Ender Erdik, Science Faculty, Ankara University, 06100 Besevler, Ankara, Turkey
Abstract Partial oxidation of methane (POM) into syngas at short contact times on two catalysts containing Pt/PrCeZrO and Pt/LaCeZrO
deposited on single channels of a corundum monolithic substrate was investigated. The effects of the catalyst composition,
pretreatment and process parameters on activity and selectivity of the syngas formation were studied. The oxygen mobility
in complex oxides was shown to determine both their stability to coking and realization of a direct selective oxidation route
of the syngas generation.
Content Type Journal Article
DOI 10.1007/s11144-009-0063-8
Authors
Natalya N. Sazonova, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Vladislav A. Sadykov, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Aleksey S. Bobin, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Svetlana A. Pokrovskaya, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Elena L. Gubanova, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Claude Mirodatos, CNRS Institut de Recherches sur la Catalyse 2 Avenue Albert Einstein Villeurbanne Cédex France
Abstract Two asymmetric salophen ligands (salophen(OH)(H) and salophen(NO2)(H)) were successfully synthesized via a step-wise approach. The catalytic results using redox carbonylation of aniline as
model reaction showed that cobalt(II)–salophen(OH)(H) complexes is the most reactive catalyst.
Content Type Journal Article
DOI 10.1007/s11144-009-0073-6
Authors
Li-Juan Chen, Huazhong University of Science and Technology Department of Chemistry 430074 Wuhan Peoples Republic of China
Fu-Ming Mei, Huazhong University of Science and Technology Department of Chemistry 430074 Wuhan Peoples Republic of China
Guang-Xing Li, Huazhong University of Science and Technology Department of Chemistry 430074 Wuhan Peoples Republic of China
Abstract The effect of different heteropoly acids (HPA) on the catalytic properties of Pd–HPA/SiO2 in the selective oxidation of ethylene to acetic acid was investigated in this work. The results demonstrated that a good
balance of Brönsted acid sites and Pd2+ ions stabilized by Brönsted acid sites was an indispensable factor in producing acetic acid.
Content Type Journal Article
DOI 10.1007/s11144-009-0074-5
Authors
Shuliang Xu, Chinese Academy of Sciences State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics P.O. Box 110 116023 Dalian China
Lixia Wang, Chinese Academy of Sciences State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics P.O. Box 110 116023 Dalian China
Wenling Chu, Chinese Academy of Sciences State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics P.O. Box 110 116023 Dalian China
Weishen Yang, Chinese Academy of Sciences State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics P.O. Box 110 116023 Dalian China
Abstract Surface complexes of cyanopyridine on a V–Ti–O catalyst were studied by in situ FTIR spectroscopy. In the temperature range
of 130–290 °C, two types of adsorbed cyanopyridine bound to different sites (Lewis acid sites or Brönsted acid sites) were
found to transform into surface nicotinamide. At 220–290 °C, surface heterocyclic complexes decompose to form carboxylates
and ammonium ions.
Content Type Journal Article
DOI 10.1007/s11144-009-0065-6
Authors
Yuriy A. Chesalov, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Galina Ya. Popova, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Galina B. Chernobay, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Tamara V. Andrushkevich, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Abstract Dry reforming of methane into syngas was studied over complex Pt-promoted fluorite-like oxides (PrCeZrO, GdCeZrO and LaCeZrO)
supported on a corundum substrate. Activity and syngas selectivity of these catalysts were found to depend strongly on their
composition, pretreatment and reaction conditions. At low temperatures and short contact times, the H2/CO ratio in the syngas is below 1 due to a fast reverse water–gas shift reaction. The catalyst performance was found to correlate
with the bulk oxygen mobility in complex fluorite-like oxides, which prevents the surface coking.
Content Type Journal Article
DOI 10.1007/s11144-009-0064-7
Authors
Natalya N. Sazonova, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Vladislav A. Sadykov, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Aleksey S. Bobin, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Svetlana A. Pokrovskaya, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Elena L. Gubanova, Boreskov Institute of Catalysis SB RAS 630090 Novosibirsk Russia
Claude Mirodatos, CNRS Institut de Recherches sur la Catalyse 2 Avenue Albert Einstein Villeurbanne Cédex France
Abstract Partial oxidation of methane (POM) into synthesis gas over a single channel of monolithic catalyst 1.4 wt% Pt/Gd0.3Ce0.35Zr0.35Ox/α-Al2O3 was investigated. The effect of the catalyst pretreatment and of the process parameters (temperature, contact time, feed
composition) on the catalytic activity and synthesis gas (syngas) selectivity was studied at conditions close to realistic
ones with a minimum impact of the mass and heat transfer phenomena. Experimental data are in favor of the direct route of
the syngas formation via the methane pyrolysis—selective oxidation sequence.
Content Type Journal Article
DOI 10.1007/s11144-009-0062-9
Authors
Natalya N. Sazonova, Boreskov Institute of Catalysis SB RAS Novosibirsk 630090 Russia
Vladislav A. Sadykov, Boreskov Institute of Catalysis SB RAS Novosibirsk 630090 Russia
Aleksey S. Bobin, Boreskov Institute of Catalysis SB RAS Novosibirsk 630090 Russia
Svetlana A. Pokrovskaya, Boreskov Institute of Catalysis SB RAS Novosibirsk 630090 Russia
Elena L. Gubanova, Boreskov Institute of Catalysis SB RAS Novosibirsk 630090 Russia
Claude Mirodatos, CNRS Institut de Recherches sur la Catalyse 2 Avenue Albert Einstein Villeurbanne Cedex France
Abstract The stability of [(N-pyrrolidine)metylene]daunorubicin (PMD) in aqueous solutions was studied in the pH range 0.42–12.03 at four temperatures.
Its degradation was evaluated by using an HPLC method with UV detection (254 nm). The hydrolysis of PMD involved: (a) hydrolysis
of protonated molecules of PMD depending on hydrogen ions and (b) spontaneous hydrolysis under the influence of water depending
on the substrate charge.
Content Type Journal Article
DOI 10.1007/s11144-009-0068-3
Authors
Anna Jelińska, Poznan University of Medical Sciences Department of Pharmaceutical Chemistry, Faculty of Pharmacy Grunwaldzka 6 60-780 Poznań Poland
Judyta Cielecka-Piontek, Poznan University of Medical Sciences Department of Pharmaceutical Chemistry, Faculty of Pharmacy Grunwaldzka 6 60-780 Poznań Poland
Marianna Zając, Poznan University of Medical Sciences Department of Pharmaceutical Chemistry, Faculty of Pharmacy Grunwaldzka 6 60-780 Poznań Poland
Anna Lamberti, Poznan University of Medical Sciences Department of Pharmaceutical Chemistry, Faculty of Pharmacy Grunwaldzka 6 60-780 Poznań Poland
Irena Oszczapowicz, Institute of Biotechnology and Antibiotics Department of Modified Antibiotics Starościńska 5 02-515 Warsaw Poland
Małgorzata Łukawska, Institute of Biotechnology and Antibiotics Department of Modified Antibiotics Starościńska 5 02-515 Warsaw Poland
Abstract Pt-, Au- and Ag-deposited Degussa P25 photocatalysts [at 1% (m/m) noble metal loading] were prepared in which the noble metals
are most likely to be very finely dispersed on the surface of the TiO2 nanocrystals. Deposition of noble metals increased the photocatalytic efficiency (relative to the bare photocatalyst) in
the decomposition of oxalic- and formic acid, while decreased it in phenol containing systems. In H2-production, a very high quantum yield has been found for the Pt–TiO2 photocatalyst in the presence of oxalic and formic acids as sacrificial reagents, which opens the possibility for the economic
use of industrial side products (e.g., oxalic- and formic acid) for photocatalytic H2-production.
Content Type Journal Article
DOI 10.1007/s11144-009-0052-y
Authors
Károly Mogyorósi, University of Szeged Department of Inorganic and Analytical Chemistry, Research Group for Environmental Chemistry, ReGECh PO Box 440 6701 Szeged Hungary
Ákos Kmetykó, University of Szeged Department of Inorganic and Analytical Chemistry, Research Group for Environmental Chemistry, ReGECh PO Box 440 6701 Szeged Hungary
Nóra Czirbus, University of Szeged Department of Inorganic and Analytical Chemistry, Research Group for Environmental Chemistry, ReGECh PO Box 440 6701 Szeged Hungary
Gábor Veréb, University of Szeged Department of Inorganic and Analytical Chemistry, Research Group for Environmental Chemistry, ReGECh PO Box 440 6701 Szeged Hungary
Pál Sipos, University of Szeged Department of Inorganic and Analytical Chemistry, Research Group for Environmental Chemistry, ReGECh PO Box 440 6701 Szeged Hungary
András Dombi, University of Szeged Department of Inorganic and Analytical Chemistry, Research Group for Environmental Chemistry, ReGECh PO Box 440 6701 Szeged Hungary
Abstract Unsaturated fatty acids and their derivatives were oxidized with aqueous hydrogen peroxide in two-phase systems in the presence
of homogeneous catalysts Q3{PO4[WO(O2)2]4}, where Q is [Bu4n]3+, [C5H5N(n-C16H33)]3+ or [Me(n-C8H17)3N]3+. The reactions occurred under mild conditions (T < 100 °C, atmospheric pressure), without organic solvents, and exhibited high conversion and selectivity.
Content Type Journal Article
DOI 10.1007/s11144-009-0069-2
Authors
Zinaida P. Pai, Boreskov Institute of Catalysis Novosibirsk 630090 Russia
Tatiana B. Khlebnikova, Boreskov Institute of Catalysis Novosibirsk 630090 Russia
Yulia V. Mattsat, Boreskov Institute of Catalysis Novosibirsk 630090 Russia
Valentin N. Parmon, Boreskov Institute of Catalysis Novosibirsk 630090 Russia
Abstract Methyl esters of monounsaturated fatty acids were oxidized with aqueous hydrogen peroxide in biphasic organic-aqueous systems
in the presence of catalyst [Me(n-C8H17)3N]3{PO4[WO(O2)2]4}. Epoxidation and oxidative cleavage of the C=C bond were found to proceed with high conversion and selectivity in the absence
of organic solvents and under rather mild conditions (T < 100 °C, 1 atm).
Content Type Journal Article
DOI 10.1007/s11144-009-0054-9
Authors
Tatiana B. Khlebnikova, Boreskov Institute of Catalysis Novosibirsk 630090 Russia
Zinaida P. Pai, Boreskov Institute of Catalysis Novosibirsk 630090 Russia
Larisa A. Fedoseeva, Institute of Cytology and Genetics Novosibirsk 630090 Russia
Yulia V. Mattsat, Boreskov Institute of Catalysis Novosibirsk 630090 Russia
Abstract The combined alkali-steam treatment was employed to prepare the ZSM-5 zeolite possessing the micro-mesopore hierarchical structure
and proper acidity simultaneously. The tailored zeolite displayed superior catalytic performance in the aromatization and
isomerization of 1-hexene.
Content Type Journal Article
DOI 10.1007/s11144-009-0075-4
Authors
Yuning Li, Chinese Academy of Sciences State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics 116023 Dalian People’s Republic of China
Shenglin Liu, Chinese Academy of Sciences State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics 116023 Dalian People’s Republic of China
Sujuan Xie, Chinese Academy of Sciences State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics 116023 Dalian People’s Republic of China
Longya Xu, Chinese Academy of Sciences State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics 116023 Dalian People’s Republic of China
Abstract Corrosion resistance of metallic titanium, alloys KhN65MV and 06KhN28MDT, and stainless steels 10Kh17N13M2T and 12Kh18N10T
towards the action of homogenous oxidation catalysts based on aqueous solutions of Mo–V–P heteropoly acids was studied by
an example of the 0.25 M aqueous solution of H12P3Mo18V7O85. It was established that the corrosivity of this solution towards these materials grows in the series: Ti < 06KhN28MDT < 10Kh17N13M2T < 12Kh18N10T << KhN65MV.
The highest corrosion resistance of the steels 06KhN28MDT and 10Kh17N13M2T was attributed to the fact that their Ni:Cr atomic
ratio is in the range from 0.6 to 1.1.
Content Type Journal Article
DOI 10.1007/s11144-009-0066-5
Authors
Elena G. Zhizhina, Boreskov Institute of Catalysis, Novosibirsk, 630090 Russia
Viktor F. Odyakov, Boreskov Institute of Catalysis, Novosibirsk, 630090 Russia
Abstract Phosphomolybdic acid dispersed in the micropores of Al-pillared clay (PMA/Al-PILC) was prepared by the impregnation method
and characterized by XRD and sorptomeric studies. The interlayer structure of the Al-pillared clay was found to be retained
in the PMA/Al-PILC catalyst which displays high surface area and micropore volume. The PMA/Al-PILC material was used as a
heterogeneous and recyclable catalyst for efficient condensation of β-naphthol with arylaldehydes to afford a variety of structurally
diverse aryl-14H-dibenzo[a,j]xanthenes in excellent yield and purity in short reaction time under microwave irradiation.
Content Type Journal Article
DOI 10.1007/s11144-009-0076-3
Authors
Mallari A. Naik, Birla Institute of Technology and Science Chemistry Group Pilani 333031 India
S. Samantaray, National Institute of Technology Chemistry Department Rourkela 769008 India
Braja Gopal Mishra, National Institute of Technology Chemistry Department Rourkela 769008 India
Amit Dubey, Birla Institute of Technology and Science Chemistry Group Pilani 333031 India
Abstract Titanium dioxide (TiO2) photocatalysts co-doped with iron (Fe) and niobium (Nb) were synthesized using a temperature-controlled sol–gel method.
The photocatalysis products were characterized and the photocatalytic activities were evaluated by the degradation of aqueous
methyl orange solution. Enhanced photocatalytic activity compared to undoped TiO2 was attributed to the cooperative effects of metal dopants, Fe and Nb.
Content Type Journal Article
DOI 10.1007/s11144-009-0061-x
Authors
Carl Renan Estrellan, Tokyo Institute of Technology Department of International Development Engineering 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
Chris Salim, Tokyo Institute of Technology Department of International Development Engineering 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
Hirofumi Hinode, Tokyo Institute of Technology Department of International Development Engineering 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
Abstract The nucleophilic substitution reaction of p-nitrophenyl diphenyl phosphate, p-nitrophenyl p-toluene sulfonate and insecticide fenitrothion with pralidoxime have been studied at 27 °C in the presence
of different cationic surfactants. Micellar rate enhancements increase as the cationic head group is made less polar. The
order of cleavage of different electrophilic centres by pralidoxime is P = O > S = O > P = S.
Content Type Journal Article
DOI 10.1007/s11144-009-0072-7
Authors
Shuchi Tiwari, Pt. Ravishankar Shukla University School of Studies in Chemistry Raipur CG 492010 India
Kallol K. Ghosh, Pt. Ravishankar Shukla University School of Studies in Chemistry Raipur CG 492010 India
Jan Marek, Faculty of Military Health Sciences Center of Advanced Studies and Department of Toxicology Trebesska1575 500 01 Hradec Kralove Czech Republic
Kamil Kuca, Faculty of Military Health Sciences Center of Advanced Studies and Department of Toxicology Trebesska1575 500 01 Hradec Kralove Czech Republic
Abstract The base hydrolysis of Malachite green (MG+) was studied in aqueous solution of mixed surfactants of sodium dodecyl sulfate (SDS) and Triton X-100 (TX-100) at 25 °C.
The results show that the SDS/TX-100 system compositions has relatively significant influence on the rate constant of the
base hydrolysis of MG+ when compared with the reaction in the respective single surfactant systems.
Content Type Journal Article
DOI 10.1007/s11144-009-0070-9
Authors
O. Oladega Soriyan, Obafemi Awolowo University Department of Chemistry Ile-Ife Nigeria
Olanrewaju Owoyomi, Obafemi Awolowo University Department of Chemistry Ile-Ife Nigeria
J. T. Bamgbose, Federal University of Agriculture Department of Chemistry Abeokuta Nigeria
Abstract The peculiarities of dehydroaromatization (DHA) of a CH4–C2H6 mixture over 1–10% Mo/ZSM-5 catalysts (Si/Al = 17, 30, 45) were studied in comparison with reactions of individual hydrocarbons.
For a (90 vol.% CH4 + 10 vol.% Ar) mixture, the methane conversion passes through a maximum and decreases with the time-on-stream, being about
12% after 6 h. Experiments with a mixture (85 vol.% CH4 + 5 vol.% C2H6 + 10 vol.% Ar) demonstrated that the presence of ethane leads to the suppression of the methane conversion practically to
zero and to an increase in the benzene formation rate in comparison with the (CH4 + Ar) mixture. Characterization of the spent Mo/ZSM-5 catalysts by DTA and TGA showed that both the condensation degree of
the carbonaceous deposits (C/H ratio) and their content are higher in the presence of ethane. For both feed compositions,
the maximal benzene formation rate was observed over the catalyst with 2 wt% Mo and Si/Al = 17. It is proposed that the formation
of C2 intermediates from methane and their further transformations in DHA compete with the ethane aromatization, presumably
on the same Mo active sites.
Content Type Journal Article
DOI 10.1007/s11144-009-0080-7
Authors
Ekaterina V. Matus, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Olga B. Sukhova, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Ilyas Z. Ismagilov, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Lidiya T. Tsikoza, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Zinfer R. Ismagilov, Boreskov Institute of Catalysis 630090 Novosibirsk Russia
Abstract We have investigated the catalytic activity of W2C/HZSM-5 and Mo2C/HZSM-5 for conversion of n-heptane to LPG and aromatic products. The results show that the catalytic activity of the metallic carbides increases markedly
in the presence of ZSM-5. For pure carbides, the main cracking products are methane and ethane as a result of the cleavage
of the C–C bond at the end of the hydrocarbon chain. In contrast, the zeolitic catalysts produce LPG (propane, i-butane, and n-butane) through the cleavage of C–C bond in the medial bonds. It is observed that the metallic carbides play a key role in
producing the aromatics, concerning the formation of olefin species and cyclization of them in the channels of zeolite.
Content Type Journal Article
DOI 10.1007/s11144-009-0077-2
Authors
M. R. Toosi, Shahid Beheshti University Department of Chemistry, Faculty of Science Tehran 1983963113 Iran
M. H. Peyrovi, Shahid Beheshti University Department of Chemistry, Faculty of Science Tehran 1983963113 Iran
R. Mondgarian, Research Institute of Petroleum Industry (RIPI) Tehran 1485733111 Iran
Abstract Five magnesium substituted aluminophosphate molecular sieves (denoted as MgAPO-5 (a–e), AFI topology) with different magnesium
contents were synthesized hydrothermally and characterized by XRD, ICP-AES, IR, and NH3-TPD techniques. The characterization data show that the isomorphous substitution of magnesium for aluminum in the pure AFI
framework results in MgAPO-5 (a–e) with weak and strong acid sites and that the number of strong acid sites linearly increases
with increasing magnesium content (correlation coefficient: 0.9960). n-Hexane catalytic cracking over MgAPO-5 (a–e) was investigated at low conversions (≤5%) in a microflow fixed bed reactor.
Under controlled conditions, the reaction was first order in both the n-hexane concentration and the magnesium content. The analysis of the kinetic parameters and the product selectivities suggests
that the cracking transformation is effected by strong Mg(II)-related acid sites rather than weak ones and predominantly undergoes
the monomolecular protolytic mechanism, which is consistently explained by a proposed kinetic model.
Content Type Journal Article
DOI 10.1007/s11144-009-0078-1
Authors
Lili Feng, Beijing University of Aeronautics and Astronautics School of Chemistry and Environment 37 Xueyuan Road, HaiDian District Beijing 100191 People’s Republic of China
Xingyi Qi, Beijing University of Aeronautics and Astronautics School of Chemistry and Environment 37 Xueyuan Road, HaiDian District Beijing 100191 People’s Republic of China
Junying Li, Beijing University of Aeronautics and Astronautics School of Chemistry and Environment 37 Xueyuan Road, HaiDian District Beijing 100191 People’s Republic of China
Yuelin Zhu, Beijing University of Aeronautics and Astronautics School of Chemistry and Environment 37 Xueyuan Road, HaiDian District Beijing 100191 People’s Republic of China
Liqun Zhu, Beijing University of Aeronautics and Astronautics School of Chemistry and Environment 37 Xueyuan Road, HaiDian District Beijing 100191 People’s Republic of China
Abstract Alumina supported vanadia catalysts were prepared by the wet impregnation method. The effect of vanadium content was investigated
with 1.92–16.93 wt% V2O5 loading over the support. Physical characterization of the catalysts was done by techniques such as energy dispersive X-ray
(EDX), X-ray diffraction (XRD), BET surface area measurement, FTIR spectroscopy and temperature programmed reduction (TPR)
studies. Characterization techniques have revealed that vanadia is well dispersed over alumina up to 13.91 wt%, after which
aggregation into vanadia crystallites was observed. Single step liquid-phase hydroxylation of benzene to phenol by hydrogen
peroxide was studied over these catalysts. The phenol selectivity can be attributed to amorphous surface vanadyl units in
the catalysts. The supported analogues were modified with oxides of iron and cerium. Ceria incorporation to alumina enhanced
the activity towards hydroxylation of benzene.
Content Type Journal Article
DOI 10.1007/s11144-009-0079-0
Authors
Ammanchery Velandy Shijina, University of Calicut Department of Chemistry Kerala India
Neeroli Kizhakayil Renuka, University of Calicut Department of Chemistry Kerala India
Abstract In the present study, the photocatalytic degradation of 2,3-dichlorophenol(2,3-DCP) has been investigated in a batch reactor
under UV light in slurry mode using titania P-25 (surface area 50 m2/g) as a photocatalyst and H2O2/NaOCl as oxidants. The variables studied include catalyst dose, solution pH, oxidant concentration and initial substrate
concentration. The rate of degradation was studied in terms of changes in the concentration of the pollutants and reduction
in chemical oxygen demand. The degradation rate of (2,3-DCP) was favorable at acidic pH with both oxidants. The optimum value
of catalyst dose and oxidant concentration was found to be 0.75 g/L and 10 mM. The disappearance of 2,3-DCP obeyed pseudo-first
order kinetics and the rate constant values were found to be 1.06 × 10−3s−1 and 8.7 × 10−4s−1 for TiO2 + H2O2 and TiO2 + NaOCl respectively.
Content Type Journal Article
DOI 10.1007/s11144-009-0058-5
Authors
S. K. Kansal, University Institute of Chemical Engineering & Technology, Panjab University Chandigarh India
G. Kaur, University Institute of Chemical Engineering & Technology, Panjab University Chandigarh India
S. Singh, University Institute of Chemical Engineering & Technology, Panjab University Chandigarh India
Abstract Mg–Al mixed oxides with different Mg/Al molar ratios were prepared by using a citric acid route and tested as catalysts for
the gas phase self-aldol condensation of acetone to isophorone. The sample with Mg/Al ratio of 1.0 exhibits relatively high
activity and stability, and its catalytic performance could be further improved by adding alkali promoter.
Content Type Journal Article
DOI 10.1007/s11144-009-0055-8
Authors
Chunxiang Ma, Jilin University Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry 130012 Changchun China
Gang Liu, Jilin University Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry 130012 Changchun China
Zhenlu Wang, Jilin University Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry 130012 Changchun China
Yufei Li, Jilin University Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry 130012 Changchun China
Jing Zheng, Jilin University Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry 130012 Changchun China
Wenxiang Zhang, Jilin University Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry 130012 Changchun China
Mingjun Jia, Jilin University Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry 130012 Changchun China
Abstract The dye C.I. Acid Blue 80 (AB80) was easily degraded by TiO2-P25 assisted photocatalysis in aqueous dispersion under irradiation of sunlight. The optimal reaction conditions were [TiO2] = 2.0 g/L, pH = 10, [H2O2] = 5 mmol/L. The photocatalytic reaction followed pseudo-first order kinetics. The adsorption of AB80 onto TiO2 was in accord with Langmuir equation.
Content Type Journal Article
DOI 10.1007/s11144-009-0059-4
Authors
Yingying Su, Institute of Oceanology, Chinese Academy of Sciences 266071 Qingdao Shandong China
Liping Deng, Institute of Oceanology, Chinese Academy of Sciences 266071 Qingdao Shandong China
Ning Zhang, Institute of Oceanology, Chinese Academy of Sciences 266071 Qingdao Shandong China
Xinting Wang, Institute of Oceanology, Chinese Academy of Sciences 266071 Qingdao Shandong China
Xiaobin Zhu, Institute of Oceanology, Chinese Academy of Sciences 266071 Qingdao Shandong China
Abstract Heterogeneous asymmetric catalysts using amino acids as chiral promoter were synthesized by attachment of amino acids such
as l-glutamic acid and l-phenylalanine onto the hydrophilic part of hydrolyzed octadecyltrichlorosilane (OTS). The catalysts exhibited 12–18% enantiomeric
excess (ee) for the asymmetric hydration of epoxycyclohexene to yield (1R,2R)-trans-1,2-cyclohexanediol and (1S,2S)-trans-1,2-cyclohexanediol.
Content Type Journal Article
DOI 10.1007/s11144-009-0056-7
Authors
Hadi Nur, Universiti Teknologi Malaysia (UTM) Ibnu Sina Institute for Fundamental Science Studies 81310 Skudai, Johor Malaysia
Lim Kheng Wei, Universiti Teknologi Malaysia (UTM) Ibnu Sina Institute for Fundamental Science Studies 81310 Skudai, Johor Malaysia
Salasiah Endud, Universiti Teknologi Malaysia (UTM) Ibnu Sina Institute for Fundamental Science Studies 81310 Skudai, Johor Malaysia
Abstract The feasibility of using a titanium dioxide photocatalyst supported on polyester fabric for the removal of low concentrations
of VOCs was evaluated. A series of experiments was conducted to evaluate photocatalytic efficiency in terms of the following:
catalytic activity; reaction temperature; influence of mass transfer and type of VOC.
Content Type Journal Article
DOI 10.1007/s11144-009-0057-6
Authors
Hana Žabová, Institute of Chemical Process Fundamentals of the AS CR, v.v.i Rozvojová 135 165 02 Prague Czech Republic
Bohumír Dvořák, Institute of Chemical Technology in Prague Department of Organic Technology Technická 5 166 28 Prague Czech Republic
Abstract The photodegradation of 4,4′-biphenol (BIP) under a metal halide lamp followed the Langmuir–Hinshelwood kinetic model and
the hydroxylation reaction was considered as the main initial step for BIP degradation on the basis of GC/MS analysis.
Content Type Journal Article
DOI 10.1007/s11144-009-0060-y
Authors
Yanhua Gong, School of Resources and Environmental Science, Wuhan University Wuhan 430079 People’s Republic of China
Xu Zhang, School of Resources and Environmental Science, Wuhan University Wuhan 430079 People’s Republic of China
Lijie Bai, School of Resources and Environmental Science, Wuhan University Wuhan 430079 People’s Republic of China
Nansheng Deng, School of Resources and Environmental Science, Wuhan University Wuhan 430079 People’s Republic of China
Abstract Experimental and modeling studies in the catalytic hydrogenation of glucose and fructose were carried out for the production
of sorbitol and mannitol on ruthenium and nickel catalysts. Ruthenium based catalyst showed better results when compared to
the Ni-Raney catalyst, achieving close to 100% of reactant conversion after 3 h of reaction at 130 °C and 750 psia conditions.
The application of hybrid autocatalytic kinetic models for the reaction network of the formation of sorbitol and mannitol
led to simulation results that represented the data obtained experimentally well. The autocatalytic terms were observed in
the concentration profiles of sorbitol and mannitol. From the correlation between the experimental data and the simulation
results of the autocatalytic kinetic models, it was possible to determine the kinetic parameters of the hydrogenation using
both the nickel and ruthenium catalysts (Ni/Raney and Ru/Al2O3, respectively).
Content Type Journal Article
DOI 10.1007/s11144-009-0071-8
Authors
Márcia C. M. Castoldi, Escola de Química, Universidade Federal do Rio de Janeiro (EQ-UFRJ), Ilha do Fundão, Centro de Tecnologia GREENTEC—Laboratório de Tecnologia Verde bloco E-sala 211 CEP 21949-900 Rio de Janeiro RJ Brazil
Leôncio Diógenes T. Câmara, Instituto Politécnico da Universidade do Estado do Rio de Janeiro (IPRJ-UERJ) Dep. Eng. Mecânica e Energia- DEMEC Nova Friburgo RJ Brazil
Donato A. G. Aranda, Escola de Química, Universidade Federal do Rio de Janeiro (EQ-UFRJ), Ilha do Fundão, Centro de Tecnologia GREENTEC—Laboratório de Tecnologia Verde bloco E-sala 211 CEP 21949-900 Rio de Janeiro RJ Brazil
Abstract A nickel catalyst showed a considerable selectivity to propylene glycol (up to 98%) at 30% glycerol conversion, under moderate
hydrogenation conditions: 200 °C reaction temperature, 20–25 bar hydrogen pressure, 5 wt% catalyst and unprecedented low reaction
time of 8 h.
Content Type Journal Article
DOI 10.1007/s11144-009-0032-2
Authors
Adriana Marinoiu, Research Center OLTCHIM S.A 1 Uzinei St Ramnicu Valcea 240050 Romania
Gheorghe Ionita, ANDRAD National Agency for Radioactive Waste Pitesti Romania
Costinela-Laura Gáspár, Research Center OLTCHIM S.A 1 Uzinei St Ramnicu Valcea 240050 Romania
Claudia Cobzaru, Technical University Iasi Faculty of Industrial Chemistry 71, D. Mangeron Ave Iasi 70050 Romania
Spiridon Oprea, Technical University Iasi Faculty of Industrial Chemistry 71, D. Mangeron Ave Iasi 70050 Romania
Abstract The temporal analysis of products (TAP) technique coupled with the oxygen TPD was used to elucidate the effects of the Pt-supported
fluorite-like doped ceria–zirconia oxide chemical composition and the type of pretreatment on their oxygen bonding strength,
mobility, and reactivity as related to catalytic properties in the partial oxidation of methane into synthesis gas. A rapid
evolution of hydrogen under CH4 pulse observed for oxidized catalysts agrees with the direct route of the methane selective oxidation into syngas. This route
is favored by the Pt-support interaction and a moderate bonding strength of surface oxygen species along with a high lattice
oxygen mobility.
Content Type Journal Article
DOI 10.1007/s11144-009-0040-2
Authors
Elena L. Gubanova, Université de Lyon - Université Claude Bernard Lyon1 Institut de Recherches sur la catalyse et l’environnement de Lyon (IRCELYON), UMR 5256 (CNRS/Université Claude Bernard Lyon1) 2 Avenue Albert Einstein Villeurbanne Cedex 69626 France
Vladislav A. Sadykov, Boreskov Institute of Catalysis SB RAS Pr. Lavrentieva 5 Novosibirsk 630090 Russia
Andre C. van Veen, Université de Lyon - Université Claude Bernard Lyon1 Institut de Recherches sur la catalyse et l’environnement de Lyon (IRCELYON), UMR 5256 (CNRS/Université Claude Bernard Lyon1) 2 Avenue Albert Einstein Villeurbanne Cedex 69626 France
Claude Mirodatos, Université de Lyon - Université Claude Bernard Lyon1 Institut de Recherches sur la catalyse et l’environnement de Lyon (IRCELYON), UMR 5256 (CNRS/Université Claude Bernard Lyon1) 2 Avenue Albert Einstein Villeurbanne Cedex 69626 France
Abstract Oxidative bromination of ethylene was found to proceed effectively in the presence of a catalytic system Pd(OAc)2–LiNO3 in two-component BMImBr–HOAc and three-component BMImBr–HOAc–H2O solvents. At a large content of BMImBr, conversion of ethylene was found to yield 1,2-dibromoethane with a selectivity over
95%. The composition of the Pd(OAc)2–LiNO3 solutions was followed during the reaction of ethylene by means of UV–Vis spectroscopy.
Content Type Journal Article
DOI 10.1007/s11144-009-0043-z
Authors
Tatiana A. Balandina, Boreskov Institute of Catalysis, SB RAS Novosibirsk 630090 Russian Federation
Tatiana V. Larina, Boreskov Institute of Catalysis, SB RAS Novosibirsk 630090 Russian Federation
Dmitry V. Trebushat, Boreskov Institute of Catalysis, SB RAS Novosibirsk 630090 Russian Federation
Nikolai Yu. Adonin, Boreskov Institute of Catalysis, SB RAS Novosibirsk 630090 Russian Federation
Nina I. Kuznetsova, Boreskov Institute of Catalysis, SB RAS Novosibirsk 630090 Russian Federation
Abstract S–N-codoped TiO2 powders have been synthesized through a facile one-step sol–gel method by using tetrabutyltitanate and thiourea as precursors.
The S–N-codoped TiO2 treated at 500 °C showed the highest photocatalytic activity for degrading methylene blue under visible light irradiation.
XRD, XPS and UV–vis studies revealed that the high visible-light photocatalytic activity of the doped TiO2 may originate from the synergetic effect of sulfur and nitrogen codoping into TiO2.
Content Type Journal Article
DOI 10.1007/s11144-009-0051-z
Authors
Shujuan Zhang, College of Science, Tianjin University of Science & Technology, Tianjin, 300457 People’s Republic of China
Limin Song, College of Materials Science and Chemical Engineering & Tianjin Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin, 300160 People’s Republic of China
Shuna Zhang, ZheJiang Industry Polytechnic College, Shaoxing, 312000 People’s Republic of China
Donglan Sun, College of Science, Tianjin University of Science & Technology, Tianjin, 300457 People’s Republic of China
Bin Chen, College of Materials Science and Chemical Engineering & Tianjin Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin, 300160 People’s Republic of China
Abstract The interplay between the energy distribution function of adatoms and the rate of diatom formation in catalytic reaction is
studied by means of mean field rate equations. The recombination of adatoms is described as a multi-channel process where
adatom desorption arises from several energy levels. It is shown that the distribution function can be computed, analytically,
as a function of the ratio between recombination probability and rate constant for energy disposal to the solid. This parameter
is the key quantity of the kinetics since it governs both reaction rate and the shape of the energy distribution function.
It is found that, in order to obtain steady state conditions, the control parameter is constrained within a well defined interval
of values which result lower than unity. It is shown that a kinetic transition takes place for the highest value of the parameter,
which entails hyperthermal reaction rate.
Content Type Journal Article
DOI 10.1007/s11144-009-0039-8
Authors
Massimo Tomellini, Università di Roma Tor Vergata Dipartimento di Scienze e Tecnologie Chimiche Via della Ricerca Scientifica Rome 00133 Italy
Abstract The visible-light photoactivity of LaFeO3 prepared by conventional co-precipitation method can be markedly enhanced by a simple and efficient post-treatment method.
The catalyst treated with molten KNO3 exhibited the highest rate constant of 0.061 min−1 and after 60 min visible-light irradiation, 98% Acid Red 18 was decolorized, which was much higher than P25 TiO2.
Content Type Journal Article
DOI 10.1007/s11144-009-0025-1
Authors
Jun Yang, Jinan University Department of Chemistry Guangzhou 510632 People’s Republic of China
Huiqiong Zhong, Jinan University Department of Chemistry Guangzhou 510632 People’s Republic of China
Ming Li, Jinan University Department of Chemistry Guangzhou 510632 People’s Republic of China
Lizhen Zhang, Jinan University Department of Chemistry Guangzhou 510632 People’s Republic of China
Yuanming Zhang, Jinan University Department of Chemistry Guangzhou 510632 People’s Republic of China
