费托法
钴
催化作用
化学工程
碳纤维
材料科学
沉积(地质)
化学
无机化学
有机化学
复合材料
选择性
地质学
工程类
复合数
古生物学
沉积物
作者
Hongxia Liu,Jungang Wang,Debao Li,Maohong Fan,Wei Wang,Lixia Ling,Riguang Zhang
标识
DOI:10.1016/j.cej.2024.151965
摘要
A very challenging issue with Co-catalyzed FTS, surface carbon deposition and thus FTS catalyst deactivation, remains unresolved for many years. This research is designed to overcome the challenge by using theoretical calculations together with the FTS experiments. Our theoretical calculations for the first time reveal that HCP Co not only have much higher anti-carbon deposition stability but also exhibits a better anti-carbonization capability than FCC Co; the higher stability of HCP Co is attributed to its much denser active sites with the step B5-type active unit to eliminate surface carbon species. Our FTS experiments confirm the theoretical calculation results. The great dependence of anti-carbon deposition stability on the crystallographic structure and morphology of the catalysts revealed here may open a new avenue for better, stable catalysts with maximum mass-specific reactivity.
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