Study on Coke Formation and Stability of Nickel-Based Catalysts in CO_2 Reforming of CH_4


Li Xiancai Wu Min1, Yang Yifeng1, He Fei2 (1. Department of Chemistry, Nanchang University, Nanchang 330047,China; 2. State Key Laboratory. of C1 Chemistry and Technology, Tianjin University, Tianjin 300072, China)


CO_2 reforming of CH_4 over nickel-based catalysts was investigated by using a fixed-bed reactor. Catalytic activity and amount of carbon deposition effects by nickel loading content, rare earth promoter and promoter contents were evaluated. It is found that nickel loading as well as reaction temperature can influence the activity and carbon deposition amounts,and with the addition of rare earth promoter, it can greatly improve the catalytic activity and exert a strong effect on the anticoking performance of the catalysts. The 5.0%(mass fraction)Ni-0.75%La-BaTiO_3 catalyst shows great resistance to coke formation and higher thermal stability as well as the catalytic activity.


nickel; BaTiO_3; reforming; carbon deposition; rare earths


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