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Ionics

, Volume 1, Issue 4, pp 286–291 | Cite as

Ethylene production from methane in a gas recycle electrocatalytic reactor separator

  • I. V. Yentekakis
  • Y. Jiang
  • M. Makri
  • C. G. Vayenas
Article

Abstract

It was found that methane can be oxidatively coupled to ethylene with an ethylene yield up to 85% and a total C2 hydrocarbon yield up to 88%, in a novel gas-recycle electrocatalytic reactor-separator where the recycled gas passes continuously through a molecular sieve trap in the recycle loop. The molecular sieve traps and thus protects a controllable percentage of ethylene and ethane produced during each gas cycle. These products are obtained by subsequent heating of the trap. In this way we have obtained, using the batch operating mode of the recycle reactor, ethylene yields up to 85%, i.e. 88% selectivity to ethylene at 97% CH4 conversion.

Oxygen is supplied electrochemically to the Ag-Sm2O3 or Ag anode via a solid electrolyte, i.e. Y2O3-stabilized-ZrO2, which is a O2- conductor. The cathode is exposed to ambient air and the electrocatalytic reactor operates at 750–830 °C.

Keywords

Ethane Renewable Energy Source Ethylene Production Solid Electrolyte Electrical Power Generation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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4. References

  1. [1]
    J.M. Fox, Catal. Rev.-Sci. Eng.,35(2), 169 (1993); G. Renesme, J. Saint-Just and Y. Muller, Catal. Today13, 371 (1992).Google Scholar
  2. [2]
    G.E. Keller and M.M. Bhasin, J. Catal.73, 9 (1982).CrossRefGoogle Scholar
  3. [3]
    T. Ito, J.H. Lunsford, Nature314, 721 (1985)CrossRefGoogle Scholar
  4. [4]
    J.S. Lee and S.T. Oyama, Catal. Rev. -Sci. Eng.30, 249 (1988).Google Scholar
  5. [5]
    J.H. Lunsford, Catal. Today6, 235 (1990)CrossRefGoogle Scholar
  6. [6]
    D. Eng and M. Stoukides, Catal. Rev. -Sci. Eng. 33, 375 (1991).Google Scholar
  7. [7]
    P. Tsiakaras and C.G. Vayenas, J. Catal.144, 333 (1993).CrossRefGoogle Scholar
  8. [8]
    A.L. Tonkovich, R.W. Carr, R. Aris, Science262, 221 (1993).Google Scholar
  9. [9]
    J. Haggin, C&E News, pp. 4–5, October 11, (1993)Google Scholar
  10. [10]
    Y. Jiang, I.V. Yentekakis and C.G. Vayenas, Science264, 1563 (1994)Google Scholar
  11. [11]
    Science 264, 1513, June 10, 1994; Chemistry and Industry 12, June 20, 1994; C&En News p. 41, June 13, 1994Google Scholar
  12. [12]
    C.G. Vayenas, S. Bebelis, I. Yentekakis, H.-G. Lintz, Catal. Today11, 303 (1992)CrossRefGoogle Scholar
  13. [13]
    C. G. Vayenas and R.D. Farr, Science, 208, 593 (1980); I.V. Yentekakis and C.G. Vayenas, J. Electroch. Soc.136, 996 (1989); C. G. Vayenas, Solid State Ionics28–30, 1521 (1988)Google Scholar

Copyright information

© IfI - Institute for Ionics 1995

Authors and Affiliations

  • I. V. Yentekakis
    • 1
  • Y. Jiang
    • 1
  • M. Makri
    • 1
  • C. G. Vayenas
    • 1
  1. 1.Department of Chemical EngineeringUniversity of PatrasPatrasGreece

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