Catalysis Letters

, Volume 41, Issue 3–4, pp 165–169 | Cite as

Acid-base properties and the directions of oxidative transformation of methane over nickel-based catalysts

  • Qing Miao
  • Guoxing Xiong
  • Xinsheng Li
  • Shishan Sheng
  • Xiexian Guo
Article
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Accepted:

Abstract

Two completely different behaviors of the oxidative transformation of methane (OTM) were performed on nickel-based catalysts because of different acid-base properties of those catalysts. The relatively acidic LaNiOx and LiNiLaOx/Al2O3 catalysts exhibit excellent performances in the partial oxidation of methane to syngas (POM). However, the relatively basic LiNiLaOx catalyst has a good performance in the oxidative coupling of methane to C2 hydrocarbons (OCM). The redox behaviors of those catalysts and the states of the nickel present were investigated by TPR techniques. TPR results indicated that the active component nickel of the working LaNiOx and LiNiLaOx/Al2O3 catalysts existed in the reduced state, and that of the working LiNiLaOx catalyst existed in the oxidized state under the same reaction conditions. It can be concluded that the acidic property favors keeping the reduced nickel and the reduced nickel is necessary for the POM reaction, whereas the basic property favors keeping the oxidized nickel and the oxidized nickel is necessary for the OCM reaction.

Keywords

acid-base properties oxidative transformation of methane nickel-based catalysts oxidative coupling of methane C2 hydrocarbon partial oxidation of methane syngas 
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References

  1. [1]
    Y. Amenomiya, V.I. Briss et al., Catal. Rev. Sci. Eng. 32 (1990) 163.Google Scholar
  2. [2]
    R. Pitchai and K. Klier, Catal. Rev. Sci. Eng. 28 (1986) 13.Google Scholar
  3. [3]
    A.M. Maitra, Appl. Catal. A 104 (1993) 11.Google Scholar
  4. [4]
    S.C. Tsang, J.B. Claridge and M.L.H. Green, Catal. Today 23 (1995) 3.Google Scholar
  5. [5]
    T. Seiyama, Catal. Rev. Sci. Eng. 34 (1992) 281.Google Scholar
  6. [6]
    D.J. Driscoll, W. Martir, J.X. Wang and J.H. Lunsford, J. Am. Chem. Soc. 107 (1985) 58.Google Scholar
  7. [7]
    X.-R. Xia, G.-X. Xiong and X.-X. Guo,Novel Production Methods for Ethylene, Light Hydrocarbons, and Aromatics, eds. L.F. Albright, B.L. Crynes and Nowak (Dekker, New York, 1992) pp. 107–120.Google Scholar
  8. [8]
    M. Hatano and K. Otsuka, J. Chem. Soc. Faraday Trans. I 85 (1989) 199.Google Scholar
  9. [9]
    Q. Miao, Study of the oxidative transformation of methane over the nickel-based catalysts modified by alkali metal oxide and rare-earth oxide, Doctoral Dissertation, Dalian (1995).Google Scholar
  10. [10]
    S.-Y. Yuan, B.-C. Liu and Z.-L. Yu, J. Natural Gas Chemistry 2 (1992) 166.Google Scholar
  11. [11]
    X.-S. Tang, S.-M. Huang and S.-S. Jing, Chem. J. Chinese Universities 12 (1991) 514.Google Scholar
  12. [12]
    J.R.H. Ross, M.C.F. Steel and A. Zeini-Isfahani, J. Catal. 52 (1978) 280.Google Scholar
  13. [13]
    Q. Miao, G. Xiong, S. Sheng, W. Chu and X. Guo, in:Proc. 11th Int. Congr. on Catalysis, Stud. Surf. Sci. Catal. (Elsevier, Amsterdam), in press.Google Scholar
  14. [14]
    D.A. Hickman and L.D. Schmidt, Science 259 (1993) 343.Google Scholar
  15. [15]
    J.A. Lapszewicz and X.-Z. Jiang, Prepr. Am. Chem. Soc. Div. Pet. Chem. 38 (1993) 815.Google Scholar
  16. [16]
    C.T. Au, Y.H. Hu and H.L. Wan, Catal. Lett. 27 (1994) 199.Google Scholar
  17. [17]
    Y.H. Hu and E. Ruckenstein, Catal. Lett. 34 (1995) 41.Google Scholar
  18. [18]
    T. Ito, J.X. Wang, C.H. Lin and J.H. Lunsford, J. Am. Chem. Soc. 107 (1985) 5062.Google Scholar
  19. [19]
    D. Dissanyake, J.H. Lunsford and M.P. Rosynek, J. Catal. 146 (1994) 613.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1996

Authors and Affiliations

  • Qing Miao
    • 1
  • Guoxing Xiong
    • 1
  • Xinsheng Li
    • 1
  • Shishan Sheng
    • 1
  • Xiexian Guo
    • 1
  1. 1.State Key Laboratory of Catalysis, Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianPR China

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