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Effect of Additives on the Activity of CuO/Ce 0.6 Zr 0.4 O 2 Catalysts for the Water‐Gas Shift Reaction
Author(s) -
Jiang L.,
Li C.,
Li Z.,
Zhang S.
Publication year - 2013
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201300425
Subject(s) - physisorption , catalysis , coprecipitation , raman spectroscopy , water gas shift reaction , inorganic chemistry , transition metal , oxygen storage , chemistry , scanning electron microscope , cerium oxide , temperature programmed reduction , redox , cerium , oxide , copper , oxygen , materials science , biochemistry , physics , organic chemistry , optics , composite material
Abstract A series of CuO/Ce 0.6 Zr 0.4 O 2 catalysts doped with rare earth (Y, La) oxides and transition metal (Fe, Co, Ni) promoters were synthesized by the coprecipitation method. The effects of the additive type and content on the structure, redox properties, and water‐gas shift (WGS) catalytic activity were investigated in detail by X‐ray diffraction, N 2 physisorption, scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, H 2 temperature‐programmed reduction, and Raman spectroscopy. The catalytic activity was tested in terms of CO in H 2 ‐rich coal‐derived synthesis gas, which simulated the actual gas composition of an integrated gasification combined cycle system. The experimental results revealed the beneficial role of doping with 3 wt % Fe in enhancing the catalytic performance by increasing the oxygen storage and mobility capacity, the reducibility, and the synergistic interaction between copper oxide and ceria‐zirconia.