Results 21 to 30 of about 145,127 (341)

Heterogeneous Catalysis [PDF]

Angewandte Chemie International Edition, 2015
AbstractA heterogeneous catalyst is a functional material that continually creates active sites with its reactants under reaction conditions. These sites change the rates of chemical reactions of the reactants localized on them without changing the thermodynamic equilibrium between the materials.
openaire   +3 more sources

Dry reforming of CH4 over NiCo/Ce0.75Zr0.25O2-δ: The effect of Co on the site activity and carbon pathways studied by transient techniques

Catalysis Communications, 2021
The effects of cobalt in the CeZrO2-supported NiCo (3 wt%, Co/ :Ni=3/2) on the DRM at 750oC were investigated by the transient method and use of 18O2 and 13CO2. Transient kinetic rates of carbon deposition and gasification by the support’s oxygen, TOF (s-
M.A. Vasiliades, C.M. Damaskinos, P. Djinović, A. Pintar, A.M. Efstathiou   +4 more
doaj   +1 more source

A transient isotopic study for investigating important design parameters of NiCo/Ce0.75Zr0.25O2-δ catalyst for the dry reforming of methane

Catalysis Communications, 2023
The effects of metal loading and particle size of NiCo alloy deposited on Ce0.75Zr0.25O2-δ carrier on the carbon reaction paths of dry reforming of methane at 750 °C with respect to the observed long-term activity profiles was elucidated.
M.A. Vasiliades, C.M. Damaskinos, P. Djinović, A. Pintar, A.M. Efstathiou   +4 more
doaj   +1 more source

Studying Proton Mobility in Zeolites by Varying Temperature Infrared Spectroscopy

Molecules, 2019
We report a varying temperature infrared spectroscopic (VTIR) study with partial deuterium isotopic exchange as a method for characterizing proton mobility in acidic materials.
Pit Losch, Hrishikesh Joshi, Niklas Stegmann, Olena Vozniuk, Wolfgang Schmidt   +4 more
doaj   +1 more source

Synthesis, properties, and activity of MoVTeNbO catalysts modified by zirconia-pillared clays in oxidative dehydrogenation of ethane

Open Chemistry, 2021
Composites comprising MoVTeNbO mixed oxide and zirconia-pillared montmorillonite clays (PilCs) were prepared. XRD and TEM with EDX studies confirmed the preservation of M1 MoVTeNbO phase in these composites responsible for high activity and selectivity ...
Shorayeva Kamshat Abithanovna, Massalimova Bakytgul Kabykenovna, Bespalko Yulia Nikolaevna, Kovalev Evgenii Pavlovich, Ishchenko Arcady Vladimirovich, Sadykov Vladislav Aleksandrovich   +5 more
doaj   +1 more source

Visible-Light-Active N-Doped TiO₂ Photocatalysts: Synthesis from TiOSO₄, Characterization, and Enhancement of Stability Via Surface Modification

Nanomaterials, 2022
This paper describes the chemical engineering aspects for the preparation of highly active and stable nanocomposite photocatalysts based on N-doped TiO2.
Nikita Kovalevskiy, Dmitry Svintsitskiy, Svetlana Cherepanova, Stanislav Yakushkin, Oleg Martyanov, Svetlana Selishcheva, Evgeny Gribov, Denis Kozlov, Dmitry Selishchev   +8 more
doaj   +1 more source

Hydrogenation and hydrodeoxygenation of biomass-derived oxygenates to liquid alkanes for transportation fuels

Data in Brief, 2018
An attractive approach for the production of transportation fuels from renewable biomass resources is to convert oxygenates into alkanes. In this paper, C5–C20 alkanes formed via the hydrogenation and hydrodeoxygenation of the oligomers of furfuryl ...
Shaohui Sun, Ruishu Yang, Xin Wang, Shaokang Yan   +3 more
doaj   +1 more source

Mixed-metal MIL-100(Sc,M) (M=Al, Cr, Fe) for Lewis acid catalysis and tandem C−C bond formation and alcohol oxidation [PDF]

, 2014
The authors thank Johnson Matthey and the EPSRC for an Industrial CASE award to L.M. We gratefully acknowledge the IAESTE UK for a scholarship to B.E.
Acerbi, Nadia, Anderson, Amanda Elizabeth, Ashbrook, Sharon Elizabeth, Clarke, Matthew L., Daniels, Luke, Ehrlichova, Barbora, Mitchell, Laura, Seymour, Valerie Ruth, Walton, Richard, Williamson, Patrick, Wright, Paul Anthony   +10 more
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In Situ Analytical Methods for the Characterization of Mechanochemical Reactions

Crystals, 2022
The interest in mechanochemical reactions and their fields of application have increased enormously in recent times. Mechanically activated reactions offer the advantage of cost-efficiency as well as environmentally friendly syntheses routes. In contrast
Claudia Weidenthaler
doaj   +1 more source

Inverse opal ceria–zirconia: architectural engineering for heterogeneous catalysis [PDF]

, 2008
The application of inverse opal structured materials is extended to the ceria–zirconia (Ce_(0.5)Zr_(0.5)O_2) system and the significance of material architecture on heterogeneous catalysis, specifically, chemical oxidation, is ...
Chueh, William C., Dunn, B. S., Haile, Sossina M., Noailles, Liam, Umeda, G. A.   +4 more
core   +2 more sources