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.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
J.M. Fox, Catal. Rev.-Sci. Eng.,35(2), 169 (1993); G. Renesme, J. Saint-Just and Y. Muller, Catal. Today13, 371 (1992).
G.E. Keller and M.M. Bhasin, J. Catal.73, 9 (1982).
T. Ito, J.H. Lunsford, Nature314, 721 (1985)
J.S. Lee and S.T. Oyama, Catal. Rev. -Sci. Eng.30, 249 (1988).
J.H. Lunsford, Catal. Today6, 235 (1990)
D. Eng and M. Stoukides, Catal. Rev. -Sci. Eng. 33, 375 (1991).
P. Tsiakaras and C.G. Vayenas, J. Catal.144, 333 (1993).
A.L. Tonkovich, R.W. Carr, R. Aris, Science262, 221 (1993).
J. Haggin, C&E News, pp. 4–5, October 11, (1993)
Y. Jiang, I.V. Yentekakis and C.G. Vayenas, Science264, 1563 (1994)
Science 264, 1513, June 10, 1994; Chemistry and Industry 12, June 20, 1994; C&En News p. 41, June 13, 1994
C.G. Vayenas, S. Bebelis, I. Yentekakis, H.-G. Lintz, Catal. Today11, 303 (1992)
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)
About this article
Cite this article
Yentekakis, I.V., Jiang, Y., Makri, M. et al. Ethylene production from methane in a gas recycle electrocatalytic reactor separator. Ionics 1, 286–291 (1995). https://doi.org/10.1007/BF02390209
- Renewable Energy Source
- Ethylene Production
- Solid Electrolyte
- Electrical Power Generation