Chemical Industry and Engineering Progress ›› 2021, Vol. 40 ›› Issue (2): 577-593.doi: 10.16085/j.issn.1000-6613.32020-1403

• Invited review • Previous Articles     Next Articles

New pathway for CO2 high-valued utilization: Fe-based catalysts for CO2 hydrogenation to low olefins

Chao ZHANG1(), Yulong ZHANG1, Minghui ZHU1, Bo MENG2, Weifeng TU2, Yifan HAN1,2()   

  1. 1.State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
    2.Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, Zhengzhou University, Zhengzhou 450001, Henan, China
  • Received:2020-07-20 Revised:2020-10-28 Online:2021-02-05 Published:2021-02-09
  • Contact: Yifan HAN E-mail:18930618287@163.com;yifanhan@ecust.edu.cn

Abstract:

The concentration of CO2 in the atmosphere is increasing year by year, and high value utilization of CO2 is an important path to reduce the carbon emissions. Low-carbon olefins are important chemical raw materials, and CO2 as a carbon source hydrogenation to olefins (CTO) is one of the most promising CO2 utilization technologies that can potentially mitigate the global greenhouse gas emission and reduce the dependence of chemical production on fossil fuels. The Fe-based catalysts are recognized as a promising candidate in CTO due to their low cost and excellent performance. However, the selectivity to lower olefins and the activity of the Fe-based catalysts currently haven’t met the industrial requirements, and the mechanism of CTO reaction remains unclear. This article reviews the research progress of the iron-based catalysts for CTO reaction, including the reaction thermodynamic analysis, theoretical model, catalyst design and development (the influence of additives and supports on the structure and performance of catalysts), reaction mechanism, structure-activity relationship, and deactivation mechanism. Future research direction of catalysis was put forward. With the help of Operando technology, the dynamic structure evolution of active phases could be focused during the reaction process, and the mechanism of the catalytic material surface and interface caused by external factors could be explored. Based on the principle, which could provide ideas for the rational design of industrial catalysts.

Key words: carbon dioxide, hydrogenation, catalyst, selectivity, deactivation, stability

CLC Number: 

  • TQ032.4