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高等学校化学研究 ›› 2020, Vol. 36 ›› Issue (6): 1006-1012.doi: 10.1007/s40242-020-0253-5

• Article • 上一篇    下一篇

Effect of Support on Catalytic Performance of Photothermal Fischer-Tropsch Synthesis to Produce Lower Olefins over Fe5C2-based Catalysts

LI Yuan, LI Ruizhe, LI Zhenhua, WEI Weiqin, OUYANG Shuxin, YUAN Hong, ZHANG Tierui   

  1. College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
  • 收稿日期:2020-08-05 修回日期:2020-09-09 出版日期:2020-12-01 发布日期:2020-12-03
  • 通讯作者: OUYANG Shuxin E-mail:oysx@mail.ccnu.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China(No.21972052) and the Financial Support from the "Guizi Scholar" Program of Central China Normal University, China.

Effect of Support on Catalytic Performance of Photothermal Fischer-Tropsch Synthesis to Produce Lower Olefins over Fe5C2-based Catalysts

LI Yuan, LI Ruizhe, LI Zhenhua, WEI Weiqin, OUYANG Shuxin, YUAN Hong, ZHANG Tierui   

  1. College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
  • Received:2020-08-05 Revised:2020-09-09 Online:2020-12-01 Published:2020-12-03
  • Contact: OUYANG Shuxin E-mail:oysx@mail.ccnu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21972052) and the Financial Support from the "Guizi Scholar" Program of Central China Normal University, China.

摘要: Photothermal Fischer-Tropsch synthesis(FTS) has been extensively studied, but few reports were focused on systematically exploring the influence of support on catalytic performance. Herein, a series of Fe5C2-based catalysts with different supports was fabricated via a one-step wet-chemical method for photothermal conversion of syngas to lower olefins. Under light irradiation, the optimized Fe5C2/α-Al2O3 catalyst demonstrated remarkable photothermal FTS activity, delivering selectivity to lower olefins of 50.3% with a CO conversion rate of 52.5%. Characterization studies using X-ray diffraction and Mössbauer spectroscopy analysis revealed that the active catalyst mainly contained Fe5C2 nanoparticles on α-Al2O3 support. It was found that the weak interaction between active phase and α-Al2O3 could promote the formation of Fe5C2, which contributed to the high selectivity to lower olefins.

关键词: χ-Fe5C2 catalyst, Fischer-Tropsch synthesis, Metal-support interaction, Photothermal catalysis

Abstract: Photothermal Fischer-Tropsch synthesis(FTS) has been extensively studied, but few reports were focused on systematically exploring the influence of support on catalytic performance. Herein, a series of Fe5C2-based catalysts with different supports was fabricated via a one-step wet-chemical method for photothermal conversion of syngas to lower olefins. Under light irradiation, the optimized Fe5C2/α-Al2O3 catalyst demonstrated remarkable photothermal FTS activity, delivering selectivity to lower olefins of 50.3% with a CO conversion rate of 52.5%. Characterization studies using X-ray diffraction and Mössbauer spectroscopy analysis revealed that the active catalyst mainly contained Fe5C2 nanoparticles on α-Al2O3 support. It was found that the weak interaction between active phase and α-Al2O3 could promote the formation of Fe5C2, which contributed to the high selectivity to lower olefins.

Key words: χ-Fe5C2 catalyst, Fischer-Tropsch synthesis, Metal-support interaction, Photothermal catalysis