The role of Co-ZrO2 interfacial sites in promoting catalytic performance of Co/SiC catalyst for Fischer-Tropsch synthesis

被引:5
|
作者
Wang, Min [1 ,2 ]
Guo, Shupeng [1 ]
Xia, Ming [1 ]
Wang, Jungang [1 ]
Ma, Zhongyi [1 ]
Hou, Bo [1 ]
Jia, Litao [1 ,3 ]
Li, Debao [1 ,3 ]
机构
[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
[2] Res Inst Qilu Branch Co, SINOPEC, Zibo 255400, Shandong, Peoples R China
[3] Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
基金
中国国家自然科学基金;
关键词
Fischer-Tropsch synthesis; Co-ZrO2 interfacial sites; Cobalt; Zirconium; Catalysts; SUPPORTED COBALT CATALYSTS; REDUCTION; CO/AL2O3; ALUMINA; EXAFS; STATE; OXIDE; MN; HYDROCARBONS; TEMPERATURE;
D O I
10.1016/j.joei.2020.07.008
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
Whether Co-ZrO2 interfacial sites have a beneficial effect on Co-based Fischer-Tropsch synthesis is still controversial. In this paper, different quantities of Co-ZrO2 interfacial sites were fabricated by changing the impregnation sequence of Zr added to Co/SiC catalysts. The effect of the Co-ZrO2 interfacial sites was investigated by nitrogen adsorption, X-ray diffraction (XRD), hydrogen chemisorption (H-2-TPD), temperature-programmed reduction (H-2-TPR) and TEM-EDSmapping analyses. It was found that when zirconium was on the surface of cobalt, more Co-ZrO2 interfacial sites were formed, and a higher selectivity of long-chain hydrocarbons was observed. In addition, the formation of Co-ZrO2 interfacial sites significantly increased the conversion frequency of CO. This work is of great significance for un-derstanding the role of Co-ZrO2 interfacial sites and guiding the design of related catalysts in Co-based Fischer-Tropsch synthesis. (C) 2020 Energy Institute. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:2355 / 2361
页数:7
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