Topics in Catalysis

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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
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
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
Liquid-Phase Oxidation of Benzene to Phenol by Molecular Oxygen over La Catalysts Supported on HZSM-5
Topics in Catalysis - - 2008
Yuichi Ichihashi, Tomohiko Taniguchi, Hiromi Amano, Takashi Atsumi, Satoru Nishiyama, Shigeru Tsuruya
The liquid-phase oxidation of benzene to phenol over lanthanum oxide catalysts (LaOx/HZSM-5) supported on HZSM-5 was studied in the presences of oxygen as an oxidant and ascorbic acid as a reducing regent. LaOx/HZSM-5 effectively catalyzes the formation of phenol at 353 K under the pressurization of oxygen. The LaOx/HZSM-5 catalysts take place no leaching of lanthanum species from the catalysts to...... hiện toàn bộ
Synthesis of TiO2 Thin Films: Relationship Between Preparation Conditions and Nanostructure
Topics in Catalysis - Tập 50 - Trang 133-144 - 2008
C. Ampelli, Rosalba Passalacqua, Siglinda Perathoner, Gabriele Centi, Dangsheng S. Su, Gisela Weinberg
The influence of the synthesis conditions (pH, HF concentration, procedure of application of the voltage) during the anodization of Ti foils to produce TiO2 thin films characterized by an ordered arrays of 1D nanostructures (nanorods, nanotubes) is discussed. Different types of 1D nanostructures could be obtained by changing the procedure of synthesis, as shown by field emission scanning electron ...... hiện toàn bộ
Methane Steam Reforming in Microchannel Reactors: Technical Challenges and Performances Benefits
Topics in Catalysis - - 2011
Giacomo Grasso, Gerd Schaefer, Y. Schuurman, C. Mirodatos
Transition Metal Pnictide-Halides: A Class of Under-Explored Compounds
Topics in Catalysis - Tập 52 - Trang 1611-1627 - 2009
David A. Headspith, M. Grazia Francesconi
In terms of application, mixed anion compounds have attracted far less attention than mixed cation systems. Interest in the catalytic properties of nitrides has been driven, in part, by their accessibility through new, improved synthesis routes. Although attention in this area extends beyond simple binary systems, to our knowledge, studies have not yet probed the influence of mixed anion compounds...... hiện toàn bộ
Are Au Nanoparticles on Oxygen-Free Supports Catalytically Active?
Topics in Catalysis - Tập 59 - Trang 469-477 - 2016
Alexander Yu. Klyushin, Rosa Arrigo, Yi Youngmi, Zailai Xie, Michael Hävecker, Andrey V. Bukhtiyarov, Igor P. Prosvirin, Valerii I. Bukhtiyarov, Axel Knop-Gericke, Robert Schlögl
Gold nanoparticles (Au NPs) on oxygen-free supports were examined using near ambient pressure X-ray photoelectron spectroscopy under CO oxidation conditions, and ex situ using scanning electron microscopy and transmission electron microscopy. Our observations demonstrate that Au NPs supported on carbon materials are inactive, regardless of the preparation method. Ozone (O3) treatment of carbon sup...... hiện toàn bộ
Author Index
Topics in Catalysis - Tập 30 - Trang 497-505 - 2004
Application of Highly Functional Ti-Oxide-Based Photocatalysts in Clean Technologies
Topics in Catalysis - Tập 52 - Trang 1651-1659 - 2009
Masato Takeuchi, Shirou Sakai, Afshin Ebrahimi, Masaya Matsuoka, Masakazu Anpo
Various Ti-oxide based photocatalysts such as the highly dispersed Ti-oxide species within zeolite frameworks, TiO2 nano-particles hybridized with hydrophobic zeolite adsorbents as well as visible light responsive TiO2 thin films have been successfully prepared. Characterization studies at the molecular level, such as X-ray absorption fine structure (XAFS) and photoluminescence (PL), revealed that...... hiện toàn bộ
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