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

被引：20
作者：
Li, Yuan [1 ]
Li, Ruizhe [1 ]
Li, Zhenhua [1 ]
Wei, Weiqin [1 ]
Ouyang, Shuxin [1 ]
Yuan, Hong [1 ]
Zhang, Tierui [1 ]
机构：
[1] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China
来源：
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2020年 / 36卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Fe(5)C(2)catalyst; Fischer-Tropsch synthesis; Metal-support interaction; Photothermal catalysis; SELECTIVE CONVERSION; IRON CATALYSTS; SYNTHESIS GAS; ACTIVE PHASE; NANOPARTICLES; TEMPERATURE; GAMMA-FE2O3; CHI-FE5C2; COBALT;
D O I：
10.1007/s40242-020-0253-5
中图分类号：
O6 [化学];
学科分类号：
0703 ;
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 fabricatedviaa one-step wet-chemical method for photothermal conversion of syngas to lower olefins. Under light irradiation, the optimized Fe5C2/alpha-Al(2)O(3)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 Mossbauer spectroscopy analysis revealed that the active catalyst mainly contained Fe(5)C(2)nanoparticles on alpha-Al(2)O(3)support. It was found that the weak interaction between active phase and alpha-Al(2)O(3)could promote the formation of Fe5C2, which contributed to the high selectivity to lower olefins.
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收藏
页码：1006 / 1012
页数：7
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