合成气
催化作用
化学
一氧化碳
甲醇
甲烷
费托法
原材料
化学工程
二氧化碳重整
金属
氢
碳纤维
水煤气变换反应
有机化学
材料科学
氧合物
选择性
复合数
复合材料
工程类
作者
Yanfei Xu,Xiangyang Li,Junfeng Gao,Jie Wang,Guangyuan Ma,Xiaodong Wen,Yong Yang,Yongwang Li,Mingyue Ding
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2021-02-05
卷期号:371 (6529): 610-613
被引量:209
标识
DOI:10.1126/science.abb3649
摘要
Keeping water away Syngas, a mixture of carbon monoxide (CO) and hydrogen, allows nonpetroleum resources such as biomass and natural gas to be converted to chemical products through Fischer-Tropsch synthesis. However, for the production of olefins, a key feedstock for other chemicals, about 50% of the CO is transformed to carbon dioxide and methane. Xu et al. decreased the selectivity for these undesired by-products to under 25% by modifying their catalyst, nanoparticles of iron doped with manganese and coated with a silica, with methyl groups (see the Perspective by Xie). This hydrophobic surface shortens the retention time of water on the catalyst surface to avoid the unwanted side reactions, and also suppresses oxidation of the metal carbide catalyst that forms under reaction conditions. Science , this issue p. 610 ; see also p. 577
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