An integrated air-POM syngas/dimethyl ether process from natural gas

  • Jia M
  • Li W
  • Xu H
 et al. 
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A Cu-Zn-Al methanol catalyst combined with HZSM-5 was used for dimethyl ether (DME) synthesis from a syngas containing nitrogen, which was produced by air-partial oxidation of methane (air-POM). Air-POM occurred at 850 °C, 0.8 MPa, CH4/air/H2O/CO2ratio of 1/2.4/0.8/0.4 over a Ni-based catalyst modified by magnesia and lanthanum oxide with 96% CH4conversion and constantly gave syngas with a H2/CO ratio of 2/1 during a period of 450 h. The obtained N2-containing syngas was used directly for DME synthesis. About 90% CO per-pass conversion, 78% DME selectivity and 70% DME yield could be achieved during 450 h stability testing under the pressure of 5.0 MPa, the temperature of 240 °C and the space velocity of 1000 h-1. © 2002 Elsevier Science B.V. All rights reserved.

Author-supplied keywords

  • Catalytic partial oxidation of methane
  • Dimethyl ether
  • Syngas

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  • Meilin Jia

  • Wenzhao Li

  • Hengyong Xu

  • Shoufu Hou

  • Qingjie Ge

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