能源化学(英文版)

能源化学(英文) ›› 2002, Vol. 11 ›› Issue (3): 131-136.

• Articles • 上一篇    下一篇

Oxidative Coupling of Methane over Na-W-Mn/SiO2 Catalysts at Elevated Pressures

Lingjun Chou, Yingchun Cai, Bing Zhang, Jianzhong Niu, Shengfu Ji, Shuben Li   

  1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000,P.R.China
  • 出版日期:2002-09-30 发布日期:2002-09-30

Oxidative Coupling of Methane over Na-W-Mn/SiO2 Catalysts at Elevated Pressures

Lingjun Chou, Yingchun Cai, Bing Zhang, Jianzhong Niu, Shengfu Ji, Shuben Li   

  • Online:2002-09-30 Published:2002-09-30

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摘要： Na-Mn-W/SiO2 catalysts were studied for the oxidative coupling of methane (OCM) in a micro fixed bed reactor made of stainless steel reactor at elevated pressures. The e ect of operating conditions, such as GHSV, pressure, temperature and CH4/O2 ratio on the catalytic performance of OCM was investigated. The C2+ selectivity of 80.3% was obtained at a CH4 conversion of 16.1% at 750oC, 1.5.105h-1 GHSV, and 0.6 MPa. Also, there is a small output of C3 and C4 hydrocarbons in the tail gas. The results show that unfavorable e ects due to elevated pressure can be overcome by increasing GHSV, and the OCM reaction is strongly dependent on the operating conditions at elevated pressures, particularly GHSV and the CH4/O2 ratio.

关键词: OCM, elevated pressure, stainless-steel reactor system, useful hydrocarbon.

Abstract: Na-Mn-W/SiO2 catalysts were studied for the oxidative coupling of methane (OCM) in a micro fixed bed reactor made of stainless steel reactor at elevated pressures. The e ect of operating conditions, such as GHSV, pressure, temperature and CH4/O2 ratio on the catalytic performance of OCM was investigated. The C2+ selectivity of 80.3% was obtained at a CH4 conversion of 16.1% at 750oC, 1.5.105h-1 GHSV, and 0.6 MPa. Also, there is a small output of C3 and C4 hydrocarbons in the tail gas. The results show that unfavorable e ects due to elevated pressure can be overcome by increasing GHSV, and the OCM reaction is strongly dependent on the operating conditions at elevated pressures, particularly GHSV and the CH4/O2 ratio.

Key words: OCM, elevated pressure, stainless-steel reactor system, useful hydrocarbon.