The role of SiOxCy in the catalytic performance of Co/SiC catalysts for Fischer-Tropsch synthesis

被引：25

作者：

Wang, Min ^{[1
,2
]}

Guo, Shupeng ^{[1
,2
]}

Li, Zhiwen ^{[1
,2
]}

Ma, Zhongyi ^{[1
]}

Wang, Jungang ^{[1
]}

Hou, Bo ^{[1
]}

Jia, Litao ^{[1
]}

Li, Debao ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

FUEL | 2019年 / 241卷

基金：

中国国家自然科学基金;

关键词：

Fischer-Tropsch synthesis; SiC; SiOxCy; Cobalt; Catalyst; SUPPORTED COBALT CATALYSTS; NITRIC-ACID OXIDATION; SILICON-CARBIDE; DISPERSION; RUTHENIUM; ALUMINA; TIO2; REDUCIBILITY; HYDROCARBONS; IMPACT;

D O I：

10.1016/j.fuel.2018.12.033

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：

Co/SiC catalysts were prepared to investigate the role of SiOxCy on SiC surface in the catalytic performance for Fischer-Tropsch synthesis. SiC was pretreated by nitric acid with different concentration, and the Co/SiC catalysts were prepared and characterized by N-2-adsorption, H-2-chemisorption, XRD, TPR, TPO, XPS, and TEM. It was found that the decrease of SiOxCy caused by nitric acid treatment may be related to the increase of reducibility of Co/SiC catalysts and the decrease of binding energy of cobalt. The catalytic performance revealed that the less the content of SiOxCy was, the higher the selectivity of long chain hydrocarbon was. It was concluded that the strong electronegativity of SiOxCy had great effect on the electron density of cobalt species and then on the catalytic performance of the Co/SiC catalysts.

引用

页码：669 / 675

页数：7

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