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Complete Liquid‐Phase Preparation of CuFe‐Based Catalysts and Their Application in the Synthesis of Higher Alcohols from Syngas
Author(s) -
Bai Nan,
Gao Zhihua,
Hao Chunyao,
Deng Haoyue,
Zhang Sai,
Huang Wei
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202001132
Subject(s) - syngas , catalysis , bimetallic strip , molar ratio , selectivity , bimetal , mass fraction , phase (matter) , chemical engineering , chemistry , alloy , fraction (chemistry) , slurry , materials science , inorganic chemistry , organic chemistry , metallurgy , composite material , engineering
CuFe‐based catalysts with different Cu/Fe molar ratios were prepared by the complete liquid‐phase method and applied in the synthesis of higher alcohols from syngas in a slurry bed reactor. The characterization results demonstrated that the CuFe‐based catalysts existed CuFe alloy and CuFe 2 O 4 . The molar ratio of Cu/Fe had an obvious effect on the synergistic interaction of CuFe bimetallic and its performance. The CuFe‐based catalyst with Cu/Fe molar ratio of 2 (Cu2Fe1) was the best catalyst, which showed better dispersibility and intimate contact between bimetal, and more spinel on the metal surface. The activity evaluation results exhibited that low temperature and low pressure were favorable for the formation of higher alcohols. The total alcohols selectivity was 46.87% and the higher alcohols mass fraction in total alcohols was 83.44% at 493 K and 3 MPa. This work may provide a novel method in preparing a highly efficient catalyst for higher alcohols synthesis from syngas under milder reaction conditions.