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Mechanism of CH4 Dry Reforming by Pulse Microcalorimetry: Metal Nanoparticles on Perovskite/Fluorite Supports with High Oxygen Mobility Full article

Journal Thermochimica Acta
ISSN: 0040-6031 , E-ISSN: 1872-762X
Output data Year: 2013, Volume: 567, Pages: 27- 34 Pages count : 8 DOI: 10.1016/j.tca.2013.01.034
Tags Bonding strength and reactivity of oxygen species, CH4 dry reforming, Metal clusters, Perovskite and fluorite oxide supports, Pulse microcalorimetry, Redox mechanism
Authors Sadykov Vladislav 1,2 , Rogov Vladimir 1,2 , Ermakova Eugenia 2 , Arendarsky Dmitry 1 , Mezentseva Natalia 1,2 , Alikina Galina 1 , Sazonova Natalia 1 , Bobin Aleksey 1 , Pavlova Svetlana 1 , Schuurman Yves 3 , Mirodatos Claude 3
Affiliations
1 Boreskov Institute of Catalysis, Novosibirsk, Russia
2 Novosibirsk State University, Novosibirsk, Russia
3 Institut de Recherches sur la catalyse et l’environnement de Lyon, France

Funding (4)

1 Russian Foundation for Basic Research 09-03-93112
2 French Embassy in Moscow
3 The Ministry of Education and Science of the Russian Federation
4 European Commission 228953 FP7-NMP-2008-LARGE-2 OCMOL

Abstract: The mechanism of CH4 dry reforming on Pt, Ru, Ni, Ni + Ru-supported perovskite (PrFeOx, LaPrMnCrOx) or fluorite (LnCeZrOx) oxides was studied using a Setaram Sensys DSC TG calorimeter and a pulse kinetic installation. For catalysts in the steady-state, CH4 and CO2 transformation in separate pulses proceeds with the rate and products selectivity equal to that in mixed CO2 + CH4 pulses. Heat effects of separate stages correspond to CH4 oxidation into syngas by strongly bound bridging oxygen forms of support (heat of adsorption up to 650 kJ mol−1 O2 for fluorites and ∼500 kJ mol−1 O2 for perovskites) and their replenishment by CO2 dissociation, respectively. These features demonstrate a step-wise red-ox (Mars-van-Crevelen) mechanism of CH4 dry reforming. Fast oxygen transfer from the sites of oxide support to the metal/oxide interface provides required conjugation of stages.
Cite: Sadykov V. , Rogov V. , Ermakova E. , Arendarsky D. , Mezentseva N. , Alikina G. , Sazonova N. , Bobin A. , Pavlova S. , Schuurman Y. , Mirodatos C.
Mechanism of CH4 Dry Reforming by Pulse Microcalorimetry: Metal Nanoparticles on Perovskite/Fluorite Supports with High Oxygen Mobility
Thermochimica Acta. 2013. V.567. P.27- 34. DOI: 10.1016/j.tca.2013.01.034 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: Oct 15, 2012
Accepted: Jan 30, 2013
Published online: Feb 16, 2013
Published print: Sep 10, 2013
Identifiers:
Web of science: WOS:000323408100005
Scopus: 2-s2.0-84884531205
Elibrary: 20457146
Chemical Abstracts: 2013:341407
Chemical Abstracts (print): 160:76351
OpenAlex: W2048247337
Citing:
DB Citing
Web of science 29
Scopus 31
Elibrary 29
OpenAlex 31
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