Mechanism of Ethanol Steam Reforming Over Pt/(Ni+Ru)-Promoted Oxides by FTIRS In Situ | Sciact - CRIS-система Института катализа

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

Конференция

EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 авг. - 4 сент. 2015 , Казань

Журнал

Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028

Вых. Данные

Год: 2016, Том: 59, Номер: 15, Страницы: 1332-1342 Страниц : 11 DOI: 10.1007/s11244-016-0659-y

Ключевые слова

DRIFT in situ, Ethanol, Mechanism, Reactivity, Steam reforming, Surface species

Авторы

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

Организации

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

Информация о финансировании (4)

1	European Commission	604296 FP7-NMP-2013-LARGE-7 BIOGO
2	Российский фонд фундаментальных исследований	15-53-16020
3	Министерство образования и науки Российской Федерации
4	Российский фонд фундаментальных исследований	12-03-93115

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.

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 CAPlusCA OpenAlex

Опубликована online:	18 июл. 2016 г.
Опубликована в печати:	1 сент. 2016 г.

Web of science:	WOS:000382849100008
Scopus:	2-s2.0-84984878698
РИНЦ:	27570351
Chemical Abstracts:	2016:1194816
Chemical Abstracts (print):	166:109495
OpenAlex:	W2480919008

БД	Цитирований
Web of science	13
Scopus	14
РИНЦ	15
OpenAlex	14