Promotional effects of sodium and sulfur on light olefins synthesis from syngas over iron-manganese catalyst
Promotional effects of sodium and sulfur on light olefins synthesis from syngas over iron-manganese catalyst
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DOI：
10.1016/j.apcatb.2021.120716
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发表时间：
2022-01
期刊：
影响因子：
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通讯作者：
Xiaoli Yang;Jia Yang;Yalan Wang;Tao Zhao;Haoxi Ben;Xuning Li;A. Holmen;Yanqiang Huang;De Chen
中科院分区：
文献类型：
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作者：
Xiaoli Yang;Jia Yang;Yalan Wang;Tao Zhao;Haoxi Ben;Xuning Li;A. Holmen;Yanqiang Huang;De Chen
结果表明：在FeMnO_x催化剂上添加Na和S均能促进CO的转化和烯烃的生成; Pomotes通过抑制铁的氧化循环和促进碳的插入促进Fe_5C_2的生成;助剂的存在降低了铁的电荷，使Fe-C键更紧密，降低了CO的活化能;助剂确实提高了碳链的生长活性和加氢能垒。
HighlightsNa and S additives over FeMnO x catalyst promoted both the CO conversion and the olefin formation.Pomotes facilitated the Fe5C2 formation by suppressing the oxidation cycle of iron and enhancing the insertion of carbon.The presence of promoters reduced the charge of iron and caused more compact bonds of Fe-C, lowing the CO activation energy.Promoters indeed increased the carbon chain growth activity and the energy barrier to hydrogenation.