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- W2364743952 abstract "Characteristics of Cu-Ce(La)O_x catalysts are studied,which are prepared by co-precipitation for water-gas shift reaction.It is learned that the neutralization pH,neultralization temperature,calcination and composition of CuO,CeO_2 and LaO_x all exert effect on the activities and crystallization of Cu-Ce(La)O_x catalysts.The optimum process conditions for preparation of 5%CuO-CeO_2-La(10%)O_x are:neutralization temperature 54 ℃,pH value 11,calcination temperature 400 ℃ for 4 h.The optimized composition is CuO∶CeO_2∶LaO_x=20∶70∶10 (atom ratio).XRD spectral analysis shows that in 5% CuO-CeO_2-La(10%)O_x, perovskite type oxides CuLaO_2 have been highly and evenly dispersed into the main phase CeO_2 (in the oxidation state),while in the reduction state there exist not only CeO_2 and CuLaO_2,but also Cu phase.It is very likely that other activity sites than CuLaO_2 or Cu can be found for the water-gas shift reaction,which makes the activity of catalysts either in the oxidation state or in the reduction state basically identical.The rather complex structure of activity sites requires further study." @default.
- W2364743952 created "2016-06-24" @default.
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- W2364743952 date "2004-01-01" @default.
- W2364743952 modified "2023-09-23" @default.
- W2364743952 title "PREPARATION OF Cu-Ce(La)O_x CATALYSTS FOR WATER-GAS SHIFT REACTION AND THEIR CHARACTERISTICS" @default.
- W2364743952 hasPublicationYear "2004" @default.
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