CJCU

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (6): 929.

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Studies on Oxydehydrogenation of Ethane to Ethene on Li+/MgO Catalysts(Ⅲ)─The Mechanism of Catalytic Action

CAI Bing-Xin1, ZHENG Xiao-Ming2   

  1. 1. Department of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082;
    2. Department of Chemistry, Hangzhou University, Hangzhou
  • Received:1994-10-07 Revised:1995-02-28 Online:1995-06-24 Published:1995-06-24

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Abstract: The oxydehydrogenation of ethane to ethene has been studied over Li+doped with MgO catalysts with various Li+contents. In this paper,we investigated the catalytic mechanism of oxydehydrogenation on Li+/MgO with XRD,IR,TG.It is found that the quantity of Li+doped with MgO affect amounts and intensity of acid and basic centres, surface metal ions and oxygen groups with low coordination are active species for the reaction.The oxydehydrogenation of ethane to ethane on Li+/MgO is probable by the simultaneous action of radical and ionic mechanism.

Key words: Oxydehydrogenation, Active centre, Dehydrogenation mechanism

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