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

被引：3
|
作者：
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. [2 ,3 ]
Cherednichenko, Alexander G. [2 ]
Kogan, Victor M. [1 ]
机构：
[1] RAS, ND Zelinsky Inst Organ Chem, Moscow 119991, Russia
[2] Peoples Friendship Univ Russia, Moscow 117198, Russia
[3] All Russia Res Inst Oil Refining, 6-1 Aviamotornaya St, Moscow 111116, Russia
来源：
FUEL | 2022年 / 330卷
关键词：
Higher alcohol; Ethanol conversion; MoS2-based catalysts; Alumina; Carbon-coated alumina; Commercial activated carbon; ACTIVATED CARBON; ALCOHOL SYNTHESIS; SULFIDE CATALYSTS; CO HYDROGENATION; MIXED ALCOHOLS; SYNGAS; PHASE; HYDRODESULFURIZATION; COMBUSTION; GASOLINE;
D O I：
10.1016/j.fuel.2022.125512
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
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 N-2 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 gamma-Al2O3 and CCA. The turnover frequency (TOF) in all the studied reactions increased both with an increase in the average length (L) 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.
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页数：13
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