Effects of alkaline-earth metals on CoMn-based catalysts for the Fischer-Tropsch synthesis to olefins
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作者
An, Yunlei; Lin, Tiejun; Yu, Fei; Gong, Kun; Wang, Xinxing; Qi, Xinzhen; Lv, Dong; Sun, Yuhan; Zhong, Liangshu
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刊物名称
CATALYSIS SCIENCE & TECHNOLOGY
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年、卷、文献号
2022, 12, 2044-4753
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关键词
An, Yunlei; Lin, Tiejun; Yu, Fei; Gong, Kun; Wang, Xinxing; Qi, Xinzhen; Lv, Dong; Sun, Yuhan; Zhong, Liangshu
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摘要
The effects of various alkaline-earth metals (Mg, Ca and Ba) on CoMn nanocatalysts for the Fischer-Tropsch synthesis to olefins (FTO) were investigated. Methane formation and second hydrogenation of olefins were suppressed effectively by the addition of alkaline-earth metals, while the olefin formation was enhanced. In addition, alkaline-earth metals can promote the carbon chain propagation to form higher hydrocarbon products, especially for long-chain olefins. Structure characterization results suggested that alkaline-earth metals with higher surface basicity would benefit the carburization of CoMn to form more Co2C nanoprisms for olefin formation.
