Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (04): 935-941.doi: 10.3866/PKU.WHXB201202133

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Reaction Pathway for Reforming Coke Oven Gas over NiO/MgO Catalyst in an Oxygen Permeation Membrane Reactor

YANG Zhi-Bin1, DING Wei-Zhong2   

  1. 1. School of Metallurgy and Materials Engineering, Zhangjiagang Campus, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu Province, P. R. China;
    2. Shanghai Key Laboratory of Modern Metallurgy and Material Processing, Shanghai University, Shanghai 200072, P. R. China
  • Received:2011-10-22 Revised:2012-01-09 Published:2012-03-21
  • Contact: YANG Zhi-Bin E-mail:zhibinyang@shu.edu.cn
  • Supported by:

    The project was supported by the National High-Tech Research and Development Program of China (863) (2006AA11A189), Talent Introduction Project of Jiangsu University of Science and Technology, China (35271103), and Youth Foundation of Jiangsu University of Science and Technology, China.

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Abstract: The reaction pathway for reforming coke oven gas (COG) in an oxygen permeation membrane was analyzed. Through the reforming experiments of H2+N2, CH4+N2, CO+N2, H2+CH4+N2 mixtures, with or without a catalyst and the catalyst bed, the reaction scheme is proposed: H2 in COG is absorbed and dissociates on Ni particle on catalyst, the H* of dissociation migrates to high active site (“triphase boundary”) and reacts with diffused oxygen or lattice oxygen on film surface to form H2O. The CH4 also could be dissociated on active metal surface to form CH3* and H*. The H2O formed reacts with the C species to form H2 and CO. At last the residual H2O reacts with the residual CH4 on the catalyst bed to form H2 and CO.

Key words: Oxygen permeation membrane reactor, Coke oven gas, Reforming, Reaction pathway

MSC2000: 

  • O643