Catalytic conversion of ethanol over supported KCoMoS2 catalysts for synthesis of oxygenated hydrocarbons

Catalytic conversion of ethanol over supported KCoMoS2 catalysts for synthesis of oxygenated hydrocarbons Full article

Journal

Fuel
ISSN: 0016-2361 , E-ISSN: 1873-7153

Output data

Year: 2022, Volume: 330, Article number : 125512, Pages count : DOI: 10.1016/j.fuel.2022.125512

Authors

Dipheko Tshepo D. ^1,2 , Maximov Vladimir V. ¹ , Osman Mohamed E. ^1,2 , Permyakov Evgeny A. ¹ , Mozhaev Alexander V. ³ , Nikulshin Pavel A. ^3,2 , Cherednichenko Alexander G. ² , Kogan Victor M. ¹

Affiliations

1	N.D. Zelinsky Institute of Organic Chemistry RAS, Moscow 119991, Russia
2	Peoples’ Friendship University of Russia, Moscow 117198, Russia
3	All-Russia Research Institute of Oil Refining, 6/1 Aviamotornaya st., Moscow 111116, Russia

The effect of alumina, carbon-coated alumina (CCA), and two commercial activated carbons (ACs) supports on trimetallic KCoMoS2 catalysts for ethanol conversion was studied. Supports and catalysts were characterized using high-resolution transmission electron (HRTEM) microscopy, UV spectral analysis of pyridine adsorption, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and N2 physisorption to study their structural properties and morphology. The reactions were carried out under hydrogen and helium reaction atmospheres in a fixed-bed reactor. Catalysts supported on various ACs were found to be more active than those supported on γ-Al2O3 and CCA. The turnover frequency (TOF) in all the studied reactions increased both with an increase in the average length ( ) and with a decrease in dispersion (D). Product yields were higher under a helium atmosphere compared to a hydrogen atmosphere. Conversion of ethanol is supposed to occur on MoS2-based catalysts with account for the nature of the support and effects of the reaction atmosphere. The influence of catalyst acidity on product distribution and conversion was investigated; acidity was found to have no direct effect on total conversion, yet it influenced product yields.

Dipheko T.D. , Maximov V.V. , Osman M.E. , Permyakov E.A. , Mozhaev A.V. , Nikulshin P.A. , Cherednichenko A.G. , Kogan V.M.
Catalytic conversion of ethanol over supported KCoMoS2 catalysts for synthesis of oxygenated hydrocarbons
Fuel. 2022. V.330. 125512 . DOI: 10.1016/j.fuel.2022.125512 WOS Scopus OpenAlex

Web of science:	WOS:000860297700003
Scopus:	2-s2.0-85135867297
OpenAlex:	W4290991540

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OpenAlex	7
Scopus	8
Web of science	8