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CO 2 reverse water‐gas shift reaction on mesoporous M‐CeO 2 catalysts
Author(s) -
Dai Bican,
Zhou Guilin,
Ge Shaobing,
Xie Hongmei,
Jiao Zhaojie,
Zhang Guizhi,
Xiong Kun
Publication year - 2017
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22730
Subject(s) - catalysis , water gas shift reaction , mesoporous material , materials science , transition metal , selectivity , chemical engineering , inorganic chemistry , chemistry , organic chemistry , engineering
Mesoporous M‐CeO 2 (M = Ni, Co, Fe, Mn, and Cu) catalysts were prepared using the hard‐template method and applied to investigate CO 2 reverse water‐gas shift (RWGS) reaction. The physicochemical properties were studied using H 2 ‐TPR, XRD, BET, CO 2 ‐TPD, and H 2 ‐TPD. Results show that the specific surface areas of the prepared Ni‐CeO 2 , Co‐CeO 2 , Fe‐CeO 2 , Mn‐CeO 2 , and Cu‐CeO 2 catalysts exceed 120 m 2 /g. CO 2 RWGS reaction performances are affected by the d ‐orbital holes of transition metals. CO 2 RWGS reaction catalytic activities are ranked as follows: Ni‐CeO 2 > Cu‐CeO 2 > Co‐CeO 2 > Fe‐CeO 2 ≈ Mn‐CeO 2 . The Cu‐CeO 2 , Fe‐CeO 2 , and Mn‐CeO 2 catalysts maintain 100 % CO selectivity at the studied temperature.