Topics in Catalysis

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On the Synergy Effect in MoO3–Fe2(MoO4)3 Catalysts for Methanol Oxidation to Formaldehyde
Topics in Catalysis - Tập 50 - Trang 145-155 - 2008
Emma Söderhjelm, Matthew P. House, Neil Cruise, Johan Holmberg, Michael Bowker, Jan-Olov Bovin, Arne Andersson
Methanol oxidation to formaldehyde was studied over a series of Fe–Mo–O catalysts with various Mo/Fe atomic ratio and the end compositions Fe2O3 and MoO3. The activity data show that the specific activity passes through a maximum with increase of the Mo content and is the highest for Fe2(MoO4)3. The selectivity to formaldehyde, on the other hand, increases with the Mo content in the catalyst. A sy...... hiện toàn bộ
Photocatalytic Activity of AgBr as an Environmental Catalyst
Topics in Catalysis - Tập 56 - Trang 618-622 - 2013
Bungaku Kobayashi, Ryo Yamamoto, Hironobu Ohkita, Takanori Mizushima, Akira Hiraishi, Noriyoshi Kakuta
The photocatalytic activity of AgBr has been investigated. AgBr(N2) was prepared by solid(AgNO3)–solid(KBr) reaction at different temperatures in a stream of N2. AgBr(N2) prepared at 250 °C showed the highest H2 generation activity although the larger crystallites of Ag were observed. When the preparation was carried out under air [AgBr(air)] at 250 °C, the photoactivity and the crystallization of...... hiện toàn bộ
Reaction pathway of benzonitrile formation during toluene ammoxidation on vanadium phosphate catalysts
Topics in Catalysis - Tập 3 - Trang 377-386 - 1996
A. Martin, H. Berndt, B. Lücke, M. Meisel
The reaction pathway of the ammoxidation of toluene on (VO)2P2O7 used as catalyst and the interaction of potential intermediates with the pyrophosphate were studied by spectroscopic techniques (FTIR, EPR), temperature-programmed chemisorptions/ reactions (TPD, TPRS) and transient studies such as the temporal analysis of products (TAP) technique. NH3 is chemisorbed on the catalyst surface, forming ...... hiện toàn bộ
Observations on the Aging Environment Dependent NO Oxidation Activity of Model Pt/Al2O3 Diesel Oxidation Catalyst
Topics in Catalysis - - 2013
Santhosh Kumar Matam, Alexander Winkler, Anke Weidenkaff, Davide Ferri
Nanostructured Functionalised Niobium Oxide as Chemoselective Catalyst for Acetalation of Glucose
Topics in Catalysis - Tập 65 - Trang 1994-2004 - 2022
Sahil Kumar, Kanika Saini, Shunmugavel Saravanamurugan, Xiaolei Zhang, Sushil Kumar Kansal
Developing a chemoselective catalyst for the acetalation of biomass-derived glucose to alkyl glycosides has been recognised as an emerging field due to its wide range of applications. The present study focuses on synthesising sulfate functionalised niobium oxide-based (NbOx-DS) catalyst to introduce medium/strong acidic sites that contribute to the catalytic activity towards glucose acetalation, w...... hiện toàn bộ
Site requirements in the kinetics of alkane transformations catalysed by metals
Topics in Catalysis - - 2006
F. Garin
Detailed Mechanism of Ethanol Transformation into Syngas on Catalysts Based on Mesoporous MgAl2O4 Support Loaded with Ru + Ni/(PrCeZrO or MnCr2O4) Active Components
Topics in Catalysis - Tập 63 - Trang 166-177 - 2020
Vladislav A. Sadykov, Nikita F. Eremeev, Ekaterina M. Sadovskaya, Yurii A. Chesalov, Svetlana N. Pavlova, Vladimir A. Rogov, Mikhail N. Simonov, Aleksei S. Bobin, Tatiana S. Glazneva, Ekaterina A. Smal, Anton.I. Lukashevich, Aleksei V. Krasnov, Vasilii I. Avdeev, Anne-Cecile Roger
Mechanism of ethanol partial oxidation into syngas over catalysts based on mesoporous MgAl2O4 spinel loaded with fluorite PrCeZrO or spinel MnCr2O4 oxides and promoted by Ru + Ni was studied by in situ FTIRS and 18O SSITKA. Surface species (ethoxy, adsorbed ethanol, acetaldehyde, acetate, etc.) were identified and their thermal stability and reactivity were estimated. Analysis of kinetics of the 1...... hiện toàn bộ
Synthesis of Chiral Dendrimer-Encapsulated Nanoparticle (DEN) Catalysts
Topics in Catalysis - Tập 61 - Trang 902-914 - 2018
Zhihuan Weng, Francisco Zaera
Several synthetic strategies were developed for the preparation of chiral dendrimer-encapsulated Pt nanoparticle (Pt DEN) catalysts. In one approach, regular OH-terminated polyamidoamine (PAMAM) dendrimers were first derivatized with cinchonidine using “click” chemistry and sebacic acid as a linker. As many as half of the 64 terminal OH groups in a 4th generation PAMAM dendrimer could be modified ...... hiện toàn bộ
Kinetic studies of the dehydrochlorination of 1,2-dichloroethane on alumina supported copper(II)chloride catalysts
Topics in Catalysis - Tập 1 - Trang 153-162 - 1994
B. Mile, T. A. Ryan, T. D. Tribbeck, M. A. Zammitt, G. A. Hughes
Microreactor and kinetic isotope techniques have been used to study the mechanism and kinetics of the surface dehydrochlorination of 1,2-dichloroethane over alkali metal chloride modified copper(II) chloride onγ-Al2O3 catalysts. A first order rate law is obeyed and the rate constant decreases progressively on addition of LiCl, NaCl, KCI or RbCI to the copper catalyst but increases again on additio...... hiện toàn bộ
Challenges in Oxidation Catalysis
Topics in Catalysis - Tập 24 Số 1-4 - Trang 73-78 - 2003
Wim Buijs
Tổng số: 2,830   
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