期刊
CATALYSIS TODAY
卷 352, 期 -, 页码 166-174出版社
ELSEVIER
DOI: 10.1016/j.cattod.2019.11.017
关键词
Water-gas shift reaction; Cu-Ce synergistic effect; Active Cu species; Oxygen vacancy concentration
资金
- Korea Institute of Energy Research [B7-2424]
To investigate the effect of Cu/CeO2 catalysts preparation methods for low temperature water-gas shift reaction, Cu/CeO2 catalysts were prepared with various impregnation sequences and applied to the water-gas shift reaction at a high gas hourly space velocity of 36,080 mL/g.h. The catalyst preparation method affected both the Cu-Ce synergistic effect and the physico-chemical properties of the Ce promoted Cu/CeO2 catalysts, such as specific surface area, Cu particle size, Cu dispersion, amount of active Cu species and oxygen vacancy concentration. Among the prepared catalysts, Cu-Ce/CeO2 showed the highest CO conversion because of the high contents of active Cu species and high concentration of oxygen vacancies.
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