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.
Bibliographical noteFunding Information:
This work was conducted under the framework of research and development program of the Korea Institute of Energy Research ( B7-2424 ).
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