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Mechanism of Ethanol Steam Reforming Over Pt/(Ni+Ru)-Promoted Oxides by FTIRS In Situ Full article

Conference EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 Aug - 4 Sep 2015 , Казань
Journal Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028
Output data Year: 2016, Volume: 59, Number: 15, Pages: 1332-1342 Pages count : 11 DOI: 10.1007/s11244-016-0659-y
Tags DRIFT in situ, Ethanol, Mechanism, Reactivity, Steam reforming, Surface species
Authors Sadykov Vladislav A. 1,2 , Chub Olga V. 1 , Chesalov Yurii A. 1 , Mezentseva Natalia V. 1,2 , Pavlova Svetlana N. 1 , Arapova Marina V. 1,3 , Rogov Vladimir A. 1,2 , Simonov Mikhail N. 1,2 , Roger Anne-Cecile 3 , Parkhomenko Ksenia V. 3 , van Veen Andre C. 4
Affiliations
1 Boreskov Institute of Catalysis, Prospekt Lavrentieva, 5, 630090 Novosibirsk, Russia
2 Novosibirsk State University, Pirogova st., 2, 630090 Novosibirsk, Russia
3 University of Strasbourg, Strasbourg, France
4 University of Warwick, Coventry, UK

Funding (4)

1 European Commission 604296 FP7-NMP-2013-LARGE-7 BIOGO
2 Russian Foundation for Basic Research 15-53-16020
3 The Ministry of Education and Science of the Russian Federation
4 Russian Foundation for Basic Research 12-03-93115

Abstract: Mechanism of ethanol steam reforming into syngas over Pt/Pr0.15Sm0.15Ce0.35Zr0.35O2 and 10 wt% LaNi0.9Ru0.1O3/Mg-Al2O3 catalysts was studied by in situ FTIRS and pulse titration experiments. Surface species (ethoxy, adsorbed ethanol, acetaldehyde, acetate, etc.) were identified and their thermal stability, routers of transformation and reactivity were characterized. Acetate species were shown to be spectators for both types of catalysts. Transformation of ethoxy species by dehydrogenation is a fast step, while the rate-determining stage is the C–C bond rupture in thus formed acetaldehyde on metal sites. For Pt/Pr0.15Sm0.15Ce0.35Zr0.35O2 catalyst with a high mobility and reactivity of the surface/lattice oxygen of support, efficient oxidative transformation of acetaldehyde at the metal-support interface provides a high yield of syngas at short contact times in the intermediate temperature range with a minor amount of CH4 by-product. Transformation of ethoxy species on the acid sites of alumina-supported catalyst produces C2H4 and (C2H5)2O via dehydration route dominating at temperatures below 400 °C. In addition, for alumina-supported catalyst acetone is produced via aldol formation in the temperature range 400–500 °C due to combined action of metal and support sites. For this catalyst syngas yield is improved at high temperatures when steam reforming of these byproducts efficiently proceeds accompanied by cracking reactions producing also methane as by-product.
Cite: Sadykov V.A. , Chub O.V. , Chesalov Y.A. , Mezentseva N.V. , Pavlova S.N. , Arapova M.V. , Rogov V.A. , Simonov M.N. , Roger A-C. , Parkhomenko K.V. , van Veen A.C.
Mechanism of Ethanol Steam Reforming Over Pt/(Ni+Ru)-Promoted Oxides by FTIRS In Situ
Topics in Catalysis. 2016. V.59. N15. P.1332-1342. DOI: 10.1007/s11244-016-0659-y WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Published online: Jul 18, 2016
Published print: Sep 1, 2016
Identifiers:
Web of science: WOS:000382849100008
Scopus: 2-s2.0-84984878698
Elibrary: 27570351
Chemical Abstracts: 2016:1194816
Chemical Abstracts (print): 166:109495
OpenAlex: W2480919008
Citing:
DB Citing
Web of science 13
Scopus 14
Elibrary 15
OpenAlex 14
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