Carburized cobalt catalyst for the Fischer-Tropsch synthesis

被引：7

作者：

Shen, Xianfeng ^{[1
,2
]}

Luo, Dan ^{[1
,2
]}

Ma, Chenwei ^{[1
,2
]}

Suo, HaiYun ^{[3
]}

Yan, Lai ^{[3
]}

Zhang, Tianfu ^{[1
,3
,4
]}

Liu, Xi ^{[3
,5
]}

Wen, Xiaodong ^{[1
,3
]}

Li, Yongwang ^{[1
,3
]}

Yang, Yong ^{[1
,3
]}

机构：

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

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

[3] Synfuels China Co Ltd, Natl Energy Ctr Coal Liquids, Beijing 101400, Peoples R China

[4] Synfuels China Co Ltd, SynCat Beijing, Beijing 101407, Peoples R China

[5] Shanghai Jiao Tong Univ, In Situ Ctr Phys Sci, Sch Chem & Chem Engn, 800 Dongchuan RD Minhang Dist, Shanghai 200240, Peoples R China

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2021年 / 11卷 / 19期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

TOTAL-ENERGY CALCULATIONS; FORMING LIGHT OLEFINS; ACTIVE PHASE; REALISTIC CONDITIONS; COMN CATALYSTS; ALPHA-OLEFINS; CARBIDE; PERFORMANCE; INSIGHT; SELECTIVITY;

D O I：

10.1039/d1cy00654a

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：

Cobalt is an important catalyst for the Fischer-Tropsch synthesis (FTS) reaction. We present a pretreatment process to enhance the activity of cobalt catalyst by carburizing it with an intermediate time. Cobalt catalyst carburized for 0.5 h showed higher activity than the cobalt catalyst without carburization and cobalt catalyst carburized for 2 h. TEM analysis revealed the existence of different phases of Co3C, Co, and Co2C for these catalysts, with Co3C showing high activity for the FTS reaction. With the help of DFT calculations, we assessed the structure-performance relationships among the Co3C, Co, and Co2C, and found that Co3C was more active for CO activation. Our study provides a new idea to rationally design Co-based FTS catalysts with high activity.

引用

页码：6564 / 6572

页数：9

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