Influence of preparation method on performance of Ni-CeO2 catalysts for reverse water-gas shift reaction
来源期刊：Journal of Rare Earths2013年第6期
论文作者：王路辉 刘辉 刘源 陈英 杨淑清
文章页码：559 - 564
摘 要：This study investigated 1 wt.% Ni-CeO2 catalysts that were prepared using co-precipitation,deposition-precipitation,and impregnation methods for the reverse water-gas shift （RWGS） reaction.Characterizations of the catalyst samples were conducted by Brumauer-Emmett-Teller （BET）,atomic absorption spectrophotometer （AAS）,X-ray diffraction （XRD）,transmission electron microscopy （TEM）,high-resolution transmission electron microscopy （HR-TEM） and temperature programmed reduction （TPR）.The results showed that the Ni-CeO2 catalyst prepared using the co-precipitation method exhibited the best catalytic performance.In the Ni-CeO2 catalyst prepared using co-precipitation method,a combination of highly dispersed NiO and abundant oxygen vacancies was assumed to play a crucial role in determining the catalytic activity and selectivity of the RWGS reaction.
王路辉1，刘辉2，刘源3，陈英1，杨淑清1
1. Department of Chemical Engineering,School of Petrochemical Technology,Zhejiang Ocean University2. School of Food and Pharmaceutical,Zhejiang Ocean University3. Department of Catalysis Sciences and Technology,School of Chemical Engineering,Tianjin University
摘 要：This study investigated 1 wt.% Ni-CeO2 catalysts that were prepared using co-precipitation,deposition-precipitation,and impregnation methods for the reverse water-gas shift （RWGS） reaction.Characterizations of the catalyst samples were conducted by Brumauer-Emmett-Teller （BET）,atomic absorption spectrophotometer （AAS）,X-ray diffraction （XRD）,transmission electron microscopy （TEM）,high-resolution transmission electron microscopy （HR-TEM） and temperature programmed reduction （TPR）.The results showed that the Ni-CeO2 catalyst prepared using the co-precipitation method exhibited the best catalytic performance.In the Ni-CeO2 catalyst prepared using co-precipitation method,a combination of highly dispersed NiO and abundant oxygen vacancies was assumed to play a crucial role in determining the catalytic activity and selectivity of the RWGS reaction.
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