Carbon-supported Fe catalysts with well-defined active sites for highly selective alcohol production from Fischer-Tropsch synthesis

被引：44

作者：

Chen, Yanping ^{[1
]}

Ma, Lixuan ^{[3
]}

Zhang, Riguang ^{[3
]}

Ye, Runping ^{[1
]}

Liu, Wei ^{[1
]}

Wei, Jiatong ^{[1
]}

Ordomsky, Vitaly V. ^{[2
]}

Liu, Jian ^{[1
,4
,5
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China

[2] Univ Lille, Univ Artois, UMR 8181, ENSCL,UCCS Unite Catalyse & Chim Solide,CNRS,Cent, F-59000 Lille, France

[3] Taiyuan Univ Technol, State Key Lab Clean & Efficient Coal Utilizat, Key Lab Coal Sci & Technol, Taiyuan 030024, Shanxi, Peoples R China

[4] Univ Surrey, DICP Surrey Joint Ctr Future Mat, Dept Chem & Proc Engn, Guildford GU2 7XH, Surrey, England

[5] Univ Surrey, Adv Technol Inst, Guildford GU2 7XH, Surrey, England

来源：

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2022年 / 312卷

基金：

中国国家自然科学基金;

关键词：

Fischer-Tropsch synthesis; Iron catalysts; Industrial catalysis; Reaction mechanism; Active sites; IRON-BASED CATALYSTS; CARBURIZATION BEHAVIORS; MANGANESE CATALYST; POTASSIUM PROMOTER; SYNGAS; CO; COBALT; PERFORMANCE; SURFACE; TRANSFORMATION;

D O I：

10.1016/j.apcatb.2022.121393

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：

Alcohols are important chemicals, and are considered as high value-added products from Fischer-Tropsch synthesis (FTS). However, the unknown active sites and their unclear alcohol formation mechanism hinder the development of highly efficient catalysts. Herein, we report the design of low cost and scalable carbon-supported Fe (K-Fe/NC) catalyst with tailorable FTS selectivity via pyrolysis of Prussian Blue. Our K-Fe/NC catalyst exhibits alcohol selectivity as high as 30% containing 95% of C-2-C-13 fraction. The K-Fe/NC catalyst with a core-shell structure facilitates the investigation of iron structural evolution in FTS. The CO dissociation and association are thoroughly verified through theoretical calculations and the temperature-programmed surface reaction of CO. The synergistic effect between chi-Fe5C2/epsilon-Fe2C and Fe3O4 dual active sites is proposed for the alcohol formation mechanism. This work provides significant insight into the development of low cost and highly efficient iron-based catalysts for alcohols in FTS.

引用

页数：12

共 63 条

[1] Pyrolysis of Metal-Organic Frameworks to Fe3O4@Fe5C2 Core-Shell Nanoparticles for Fischer-Tropsch Synthesis [J].