Acta Chimica Sinica ›› 2000, Vol. 58 ›› Issue (10): 1188-1190. Previous Articles     Next Articles

Original Articles

Ni/Al~2O~3催化剂上CH~4分解生成的碳物种的转化

李春义;余长春;沈师孔   

  1. 石油大学重质油加工国家重点实验室;石油大学.北京(100083);中国石油天然 气集团公司催化重点实验室
  • 出版日期:2000-10-15 发布日期:2000-10-15

Studies on the transformation of carbon species from CH~4 decomposition over a Ni/Al~2O~3 catalsyt

Li Chunyi;Yu Changchun;Shen Shikong   

  1. Univ Petr.Beijing(100083)
  • Online:2000-10-15 Published:2000-10-15

The accumulation of coke mainly from CH~4 decomposition on the Ni/Al~2O~3 catalyst surface in partial oxidation of CH~4 to syngas can lead to the catalyst deactivation. In this paper, we used a sequential pulse technique to investigate the reasons of coke formation. Ni~xC from CH~4 decomposition is one of the intermediates for partial oxidation of CH~4, which can be transformed into more inert carbon species under the experimental conditions. The graphitization of carbon from Ni~xC not reacting with surface oxygen in time in partial oxidation of CH~4 is the main reason of coke formation.

Key words: NICKEL, ALUMINIUM OXIDE, METHANE, CATALYST, DECOMPOSITION

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