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Performance of Cu‐Ce / M‐Al (M = Mg, Ni, Co, Zn) hydrotalcite derived catalysts for hydrogen production from methanol steam reforming
Author(s) -
Qiao Weijun,
Yang Shuqian,
Zhang Lei,
Tian Yuan,
Wang Honghao,
Zhang Caishun,
Gao Zhixian
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6610
Subject(s) - hydrotalcite , catalysis , steam reforming , methanol , hydrogen production , space velocity , water gas shift reaction , chemistry , syngas , inorganic chemistry , hydrogen , calcination , nuclear chemistry , chemical engineering , materials science , selectivity , organic chemistry , engineering
Summary M‐Al (M = Mg, Ni, Co, Zn) hydrotalcite was synthesized on the surface of the γ ‐Al 2 O 3 carrier, and hydrotalcite was calcined to corresponding carrier. Then, A series of Cu‐Ce/M‐Al catalysts were prepared by the sequential dip method. The catalysts were characterized by the means of XRD, BET, H 2 ‐TPR, and XPS, which investigated the effects of different divalent metals M on the structure, properties, and catalytic performance of hydrotalcite derived catalysts for hydrogen production from methanol steam reforming. The main reasons for different effects on the performance of catalysts lie in the difference of the dispersion, reduction temperature, and the content of oxygen vacancies on the surface. Among them, Ce‐Cu/Zn‐Al catalyst had the best performance. When the reaction temperature was 250°C, the molar ratio of water to methanol was 1.2, and the space velocity of methanol gas was 800 hours −1 , the methanol conversion reached 100%, and the H 2 production rate was 779.7 STP cm 3 kg −1 s −1 .