Layered double hydroxides derived CuFe-based catalysts for CO2 hydrogenation to long-chain hydrocarbons

Autor: Ju Huang, Zhiyuan Zhang, Yuxue Wei, Lisheng Guo, Jiuyi Liu, Chenghua Zhang, Zhaoming Xue, Song Sun
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Chemistry of Inorganic Materials, Vol 1, Iss , Pp 100004- (2023)
Druh dokumentu: article
ISSN: 2949-7469
DOI: 10.1016/j.cinorg.2023.100004
Popis: CO2 hydrogenation to yield long-chain hydrocarbons has attracted tremendous attention in both academic and industrial field. CuFe-based bimetal catalysts have been widely applied in CO2 hydrogenation owing to their low cost, facile preparation, and excellent performance. In this study, a series of CuFe-based catalysts with different Cu/Fe molar ratios have been synthesized from layered double hydroxide precursor. The optimized CuFe8-LDO catalyst with Cu:Fe=1:8 exhibits a C5+ selectivity of 45% at CO2 conversion of 9.5%. Through systematic characterizations including TEM, TPR, TPD, XPS, it is revealed the abundant and highly dispersed CuO favors the reduction of iron species, and enhances CO adsorption capacity of as-prepared catalysts. This study provides an in-deep understanding of Cu on CO2 hydrogenation performance of Fe-based catalysts.
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