Reverse water gas shift reaction over Co-precipitated Ni-CeO2 catalysts |
| |
| Authors: | Luhui WANG Shaoxing ZHANG Yuan LIU |
| |
| Affiliation: | aDepartment of Catalysis Sciences and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, China;bSchool of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China |
| |
| Abstract: | The Ni-CeO2 catalysts with different Ni contents were prepared by a co-precipitation method and used for Reverse Water Gas Shift (RWGS) reaction. 2wt.%Ni-CeO2 showed excellent catalytic performance in terms of activity, selectivity, and stability for RWGS reaction. Characterizations of the catalyst samples were conducted by XRD and TPR. The results indicated that, in Ni-CeO2 catalysts, there were three kinds of nickel, nickel ions in ceria lattice, highly dispersed NiO and bulk NiO. Oxygen vacancies were formed in CeO2 lattice due to the incorporation of Ni2 ions into ceria lattice. Oxygen vacancies formed in ceda lattice and highly dispersed Ni were key active components for RWGS, and bulk Ni was key active component for methanation of CO2. |
| |
| Keywords: | reverse water gas shift reaction nickel CeO2 oxygen vacancy |
| 本文献已被 维普 万方数据 ScienceDirect 等数据库收录！ |
|
