能源化学(英文版)

能源化学(英文) ›› 2016, Vol. 25 ›› Issue (6): 911-916.DOI: 10.1016/j.jechem.2016.11.002

• PERSPECTIVES • 上一篇    下一篇

Iron-based Fischer-Tropsch synthesis of lower olefins: The nature of χ-Fe5C2 catalyst and why and how to introduce promoters

Di Wanga,b, Bingxu Chena, Xuezhi Duana, De Chenb, Xinggui Zhoua   

  1. a State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    b Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway
  • 收稿日期:2016-08-10 修回日期:2016-11-02 出版日期:2016-11-15 发布日期:2016-11-15
  • 通讯作者: Xuezhi Duan
  • 基金资助:

    This work was supported by the Natural Science Foundationof China (21306046),the Open Project of State Key Laboratory ofChemical Engineering (SKL-Che-15C03),the Fundamental ResearchFunds for the Central Universities (WA1514013) and the 111 Projectof Ministry of Education of China (B08021).Di Wang is supportedby the China Scholarship Council (CSC) for the research at NorwegianUniversity of Science and Technology (NTNU).

Iron-based Fischer-Tropsch synthesis of lower olefins:The nature of χ-Fe5C2 catalyst and why and how to introduce promoters

Di Wanga,b, Bingxu Chena, Xuezhi Duana, De Chenb, Xinggui Zhoua   

  1. a State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    b Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway
  • Received:2016-08-10 Revised:2016-11-02 Online:2016-11-15 Published:2016-11-15
  • Contact: Xuezhi Duan
  • Supported by:

    This work was supported by the Natural Science Foundationof China (21306046),the Open Project of State Key Laboratory ofChemical Engineering (SKL-Che-15C03),the Fundamental ResearchFunds for the Central Universities (WA1514013) and the 111 Projectof Ministry of Education of China (B08021).Di Wang is supportedby the China Scholarship Council (CSC) for the research at NorwegianUniversity of Science and Technology (NTNU).

摘要： As a sustainable and short-flow process, iron-catalyzed direct conversion of CO-rich syngas to lower olefins without intermediate steps, i.e., Fischer-Tropsch-to-Olefins (FTO), has received increasing attention. However, its fundamental understanding is usually limited by the complex crystal phase composition in addition to the interferences of the promoter effects and inevitable catalyst deactivation. Until recently, the combination of multiple in-situ/ex-situ characterizations and theoretical studies has evidenced Hägg iron carbide (χ-Fe5C2) as the dominant active phase of iron-based Fischer-Tropsch catalysts. This perspective attempts to review and discuss some recent progresses on the nature of χ-Fe5C2 catalyst and the crucial effects of promoters on the FTO performance from theoretical and experimental viewpoints, aiming to provide new insights into the rational design of iron-based FTO catalysts.

关键词: Fischer-Tropsch synthesis, Lower olefins, χ-Fe5C2 catalyst, Promoters, Theoretical and experimental insights

Abstract: As a sustainable and short-flow process, iron-catalyzed direct conversion of CO-rich syngas to lower olefins without intermediate steps, i.e., Fischer-Tropsch-to-Olefins (FTO), has received increasing attention. However, its fundamental understanding is usually limited by the complex crystal phase composition in addition to the interferences of the promoter effects and inevitable catalyst deactivation. Until recently, the combination of multiple in-situ/ex-situ characterizations and theoretical studies has evidenced Hägg iron carbide (χ-Fe5C2) as the dominant active phase of iron-based Fischer-Tropsch catalysts. This perspective attempts to review and discuss some recent progresses on the nature of χ-Fe5C2 catalyst and the crucial effects of promoters on the FTO performance from theoretical and experimental viewpoints, aiming to provide new insights into the rational design of iron-based FTO catalysts.

Key words: Fischer-Tropsch synthesis, Lower olefins, χ-Fe5C2 catalyst, Promoters, Theoretical and experimental insights