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 catalys...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 FesC2/a-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 Mossbauer spectroscopy analysis revealed that the active catalyst mainly contained FesC2 nanoparticles on a-AbO3 support.It was found that the weak interaction between active phase and a-AhO3 could promote the formation of FesC2,which contributed to the high selectivity to lower olefins.展开更多
基金Supported by the National Natural Science Foundation of China(No.21972052)the Financial Support from the“izi Scholar”Program of Central China Normal University,China.
文摘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 FesC2/a-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 Mossbauer spectroscopy analysis revealed that the active catalyst mainly contained FesC2 nanoparticles on a-AbO3 support.It was found that the weak interaction between active phase and a-AhO3 could promote the formation of FesC2,which contributed to the high selectivity to lower olefins.
