Low Temperature Gas-Phase Oxidation of Ethanol over Au/TiO2 | Sciact - CRIS-система Института катализа

Low Temperature Gas-Phase Oxidation of Ethanol over Au/TiO2 Научная публикация

Журнал

Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875

Вых. Данные

Год: 2012, Том: 433-434, Страницы: 88-95 Страниц : 8 DOI: 10.1016/j.apcata.2012.05.003

Ключевые слова

Au/TiO 2, Ethanol, Gold, Nanoparticles, Selective oxidation

Авторы

Sobolev Vladimir I. ¹ , Koltunov Konstantin Yu. ^1,2 , Simakova Olga A. ^1,3 , Leino Anne-Riikka ⁴ , Murzin Dmitry Yu. ³

Организации

1	Boreskov Institute of Catalysis, Pr. Akademika Lavrentieva, 5, Novosibirsk 630090, Russia
2	Novosibirsk State University, Pirogova, 2, Novosibirsk 630090, Russia
3	Laboratory of Industrial Chemistry and Reaction Engineering, Process Chemistry Centre, Åbo Akademi University, 20500 Turku, Finland
4	Microelectronics and Materials Physics Laboratories, EMPART Research Group of Infotech Oulu, University of Oulu, FIN-90014 Oulu, Finland

A set of nanostructured gold catalysts with Au loadings ranging from 0.5 to 7.0 wt% on a TiO2 support was prepared and evaluated in a gas-phase oxidation of ethanol with molecular oxygen. The catalytic activity was measured in a flow reactor under atmospheric pressure using temperature programmed heating. The catalysts with Au loadings varying from 2 wt% to 7 wt% displayed two distinct temperature dependent peaks of catalytic activity in ethanol oxidation to acetaldehyde. The temperature, at which the first peak occurred, 125 ◦C, is extraordinarily low for the gas-phase oxidation of ethanol. In contrast, gold supported on Al2O3 and SiO2, which was prepared and tested in the same reaction for the purpose of comparison, showed conventional, steady increase of ethanol conversion at temperatures above 200 ◦C. The results demonstrated a possibility to employ Au/TiO2 catalysts in selective low temperature gas phase oxidation of ethanol. The probable reasons of the unusual catalytic behavior of Au/TiO2 are discussed.

Sobolev V.I. , Koltunov K.Y. , Simakova O.A. , Leino A-R. , Murzin D.Y.
Low Temperature Gas-Phase Oxidation of Ethanol over Au/TiO2
Applied Catalysis A: General. 2012. V.433-434. P.88-95. DOI: 10.1016/j.apcata.2012.05.003 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	6 мар. 2012 г.
Принята к публикации:	8 мая 2012 г.
Опубликована online:	17 мая 2012 г.
Опубликована в печати:	1 авг. 2012 г.

Web of science:	WOS:000307321400012
Scopus:	2-s2.0-84863715520
РИНЦ:	20475691
Chemical Abstracts:	2012:789626
Chemical Abstracts (print):	157:329993
OpenAlex:	W2005256097

БД	Цитирований
Web of science	53
Scopus	59
РИНЦ	55
OpenAlex	56