Interfacial Fe5C2-Cu catalysts toward low-pressure syngas conversion to long-chain alcohols

Yinwen Li, Wa Gao, Mi Peng, Junbo Zhang, Jialve Sun, Yao Xu, Song Hong, Xi Liu, Xingwu Liu, Min Wei (), Bingsen Zhang () and Ding Ma ()
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Yinwen Li: Beijing University of Chemical Technology
Wa Gao: College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University
Mi Peng: College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University
Junbo Zhang: Beijing University of Chemical Technology
Jialve Sun: Beijing University of Chemical Technology
Yao Xu: College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University
Song Hong: Beijing University of Chemical Technology
Xi Liu: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan
Xingwu Liu: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan
Min Wei: Beijing University of Chemical Technology
Bingsen Zhang: Institute of Metal Research, Chinese Academy of Sciences
Ding Ma: College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Long-chain alcohols synthesis (LAS, C5+OH) from syngas provides a promising route for the conversion of coal/biomass/natural gas into high-value chemicals. Cu-Fe binary catalysts, with the merits of cost effectiveness and high CO conversion, have attracted considerable attention. Here we report a nano-construct of a Fe5C2-Cu interfacial catalyst derived from Cu4Fe1Mg4-layered double hydroxide (Cu4Fe1Mg4-LDH) precursor, i.e., Fe5C2 clusters (~2 nm) are immobilized onto the surface of Cu nanoparticles (~25 nm). The interfacial catalyst exhibits a CO conversion of 53.2%, a selectivity of 14.8 mol% and a space time yield of 0.101 g gcat−1 h−1 for long-chain alcohols, with a surprisingly benign reaction pressure of 1 MPa. This catalytic performance, to the best of our knowledge, is comparable to the optimal level of Cu-Fe catalysts operated at much higher pressure (normally above 3 MPa).

Date: 2020
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DOI: 10.1038/s41467-019-13691-4

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