The Effect of Promotor Sm2O3 on the Alumina-Supported Nickel Methanation Catalysts

Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (2): 259.

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The Effect of Promotor Sm₂O₃ on the Alumina-Supported Nickel Methanation Catalysts

SHENG Yin¹, MA Fu-tai²

1. Department of Chemistry, Hangzhou Teacher's College, Hangzhou, 310036;
2. Department of Chemistry, Hangzhou University, Hangzhou

Received:1991-02-06 Online:1992-02-24 Published:1992-02-24

Abstract

Abstract: In this paper, the effects of adding Sm₂O₃ on the alumina-supported nickel methana-tion catalysts were investigated by XRD, TEM, XPS and TPSRtechniquesIt was found that the addition of Sm₂O₃ leads to significant increases both in activities and stabilities, which are more obvious for the catalyst sample prepared by stepwise impregnationThe effects are primarily attributed to the fined and well-distributed crystallite obtained by means of Sm₂O₃ adding XPS results indicate that Ni_{2P_3/2} binding energies for NiO-Sm₂O₃/Al₂O₃ are 1 eVlower than that for NiO/Al₂O₃. The interaction of Sm₂O₃ and Ni can improve the activation absorption of carbon oxide.

Key words: Methanation, Nickel catalyst, Sm₂O₃

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SHENG Yin, MA Fu-tai. The Effect of Promotor Sm₂O₃ on the Alumina-Supported Nickel Methanation Catalysts[J]. Chem. J. Chinese Universities, 1992, 13(2): 259.

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The Effect of Promotor Sm₂O₃ on the Alumina-Supported Nickel Methanation Catalysts

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