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Structure/Reactivity Studies Of Nd2O3/MgO AND MgO/Nd2O3 Catalysts Used In Methane Coupling

Published online by Cambridge University Press:  15 February 2011

A. Burrows
Affiliation:
Department of Materials Science and Engineering, The University of Liverpool P.O. Box 147, Liverpool L69 3BX, England
C. J. Kiely
Affiliation:
Department of Materials Science and Engineering, The University of Liverpool P.O. Box 147, Liverpool L69 3BX, England
R. W. Devenish
Affiliation:
Department of Materials Science and Engineering, The University of Liverpool P.O. Box 147, Liverpool L69 3BX, England
J. S. Hargreaves
Affiliation:
Leverhulme Centre for Innovative Catalysis, The University of Liverpool, P.O. Box 147, Liverpool L69 3BX, England
G. J. Hutchings
Affiliation:
Leverhulme Centre for Innovative Catalysis, The University of Liverpool, P.O. Box 147, Liverpool L69 3BX, England
R. W. Joyner
Affiliation:
Leverhulme Centre for Innovative Catalysis, The University of Liverpool, P.O. Box 147, Liverpool L69 3BX, England
M. Y. Sinev
Affiliation:
Institute of Chemical Physics, Russian Academy of Sciences Kosygina St. 4, Moscow 117334, Russia
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Abstract

Using High Resolution Electron Microscopy, we have investigated the structure/function relationships of the Nd2O3/MgO and MgO/Nd2O3 catalyst systems which are active in the oxidative coupling of methane. In both cases catalytic performance was found to depend critically on the morphology of Nd2O3. We demonstrate that high selectivities are associated with a thin disordered film of neodymia on the MgO surface for the Nd2O3/MgO system whilst for the reverse catalyst, the dominant morphology is a highly disordered cubic form of Nd2O3.

Type
Research Article
Copyright
Copyright © Materials Research Society 1994

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References

1. Wolfe, E.E., in Methane conversion by Oxidative Processes: Fundamentals and Engineering Aspects, edited by Wolfe, E.E. (van Nostrand Rheinhold, New york, 1992).CrossRefGoogle Scholar
2. Hargreaves, J.S., Hutchings, G.J., Joyner, R.W. and Kiely, C.J., Journal of Catalysis, 135, 576 (1992).CrossRefGoogle Scholar
3. Hargreaves, J.S., Hutchings, G.J., Joyner, R.W. and Kiely, C.J., Catalysis Today, 13, 401 (1992).CrossRefGoogle Scholar
4. Sinev, M.Y., Tulenin, Y.P., Hutchings, G.J., Joyner, R.W., Siddiqui, M.R.H., Kiely, C.J. an Devenish, R.W., American Chemical Society, San Francisco (1992).Google Scholar
5. Burrows, A., Blick, K.H., Devenish, R.W., Hutchings, G.J., Joyner, R.W., Kiely, C.J. and Sinev, M.Y. presented at the 1993 Natural Gas Conversion Symposium, Sydney (in press).Google Scholar

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Structure/Reactivity Studies Of Nd2O3/MgO AND MgO/Nd2O3 Catalysts Used In Methane Coupling
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