Activity and selectivity enhancement of silica supported cobalt catalyst for alcohols production from syngas via Fischer-Tropsch synthesis

被引：22

作者：

Du, Hong ^{[1
]}

Jiang, Miao ^{[1
]}

Zhao, Min ^{[1
,2
]}

Ma, Xiuyun ^{[1
]}

Xu, Zhanwei ^{[1
]}

Zhao, Ziang ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Co; SiO2; Alcohol; Fischer-tropsch synthesis; Syngas; Ethanolamine; CO HYDROGENATION; PARTICLE-SIZE; PERFORMANCE; EVOLUTION; CO/SIO2;

D O I：

10.1016/j.ijhydene.2021.11.070

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Synthesis of mixed alcohols together with clean fuels from syngas via Fischer-Tropsch synthesis is an attractive route for the utilization of coal, natural gas and biomass. In this work, a monometallic cobalt catalyst (Co/SiO2-EOAM) was synthesized by impregnation using ethanolamine modified silica pellet as support and employed for the conversion of syngas. The combustion of carbon and nitrogen species during the calcination of catalyst facilitated the interaction between cobalt and support, which promoted the cobalt dispersion while inhibited the reduction of cobalt oxide. The Co/SiO2-EOAM catalyst exhibited much higher activity and selectivity to alcohols compared to un-modified silica supported cobalt catalyst (Co/SiO2). The higher activity was resulted from the improved cobalt dispersion. The co-existence of abundant metallic cobalt and Co2+ species were responsible for the increasing of alcohols selectivity. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：4559 / 4567

页数：9

共 49 条

[1] Tuning the Facet Proportion of Co2C Nanoprisms for Fischer-Tropsch Synthesis to Olefins [J].