Inorganic Chemicals Industry ›› 2023, Vol. 55 ›› Issue (3): 36-46.doi: 10.19964/j.issn.1006-4990.2022-0170

• Reviews and Special Topics • Previous Articles     Next Articles

Research progress of electronic and structure promoters of iron-based catalysts for FTO reaction

WEN Yuan1(), ZHOU Chenliang1(), ZHANG Qiang2, YU Linfei1, HE Wenxiu1, LIU Quansheng3   

  1. 1. Inner Mongolia Key Laboratory of Coal Chemical Industry and Comprehensive Utilization,School of Chemistry and Chemical Engineering,Inner Mongolia University of Science & Technology,Baotou 014010,China
    2. Baotou Huanrun;Environmental Protection Investment Co.,Ltd,Baotou 014010,China
    3. Inner Mongolia Key Laboratory of;High-Value Function Utilization of Low Rank Carbon Resource,Department of Chemical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China
  • Received:2022-04-07 Online:2023-03-10 Published:2023-03-17

Abstract:

The direct synthesis of light olefins from syngas(FTO) has become an important research direction in China in recent years due to its simple production process and low production cost.Iron-based catalysts have attracted much attention due to their low cost, low methane selectivity and weak chain growth ability.However, a single iron-based catalyst cannot meet the needs of industrial production, and additives need to be added to improve the reaction performance of the catalysts.The effects of electronic additives(alkali metal, alkaline earth metal, transition metal, rare earth metal) and structural additives(SiO2, Al2O3, ZrO2) on the reduction and carbonization of active components of the catalyst were reviewed.The influence of the loading amount of additives on the reaction performance of the catalyst was analyzed.It was pointed out that electronic additives could promote the carbonization of iron, increase the activity of the catalyst and the selectivity of low olefins.Structural additives could effectively improve the dispersion of catalyst crystal, increase the specific surface area, and promote the selectivity of low carbon olefins.Finally, it was pointed out that the loading capacity, synergistic effect and related action mechanism of additives had shortcomings, and timely research was needed to promote the industrialization process of FTO reaction.

Key words: Fischer-Tropschto olefins, iron-based catalysts, light olefin, electronic promoter, structural promoter

CLC Number: