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The influence of pre-treatment gas mixture upon the ammonia synthesis activity of Co-Re catalysts

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Greer_2015_CC_Influence_CC.pdf (1.343Mb)
Date
05/08/2015
Author
McAulay, K.
Hargreaves, J.S.J.
McFarlane, A.R.
Price, D.J.
Spencer, N.A.
Bion, N.
Can, F.
Richard, M.
Greer, H.F.
Zhou, W.Z.
Keywords
Ammonia
Cobalt
Rhenium
Nitrite
Hydrogen
QD Chemistry
NDAS
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Abstract
Abstract CoRe4 catalysts highly active for ammonia synthesis at ambient pressure and 400 °C can be prepared without an ammonolysis stage. Pre-treatments under 3:1 H2:N2 and 3:1 H2:Ar atmospheres are shown to influence catalytic performance with the latter treatment leading to an induction period prior to development of activity upon switching to an ammonia synthesis feedstream providing indirect evidence for formation of an active nitride phase. The difference in behaviour between the two pre-treatment atmospheres is manifested in temperature programmed isotopic exchange experiments where H2:Ar treated material is inactive and its H2:N2 treated counterpart active.
Citation
McAulay , K , Hargreaves , J S J , McFarlane , A R , Price , D J , Spencer , N A , Bion , N , Can , F , Richard , M , Greer , H F & Zhou , W Z 2015 , ' The influence of pre-treatment gas mixture upon the ammonia synthesis activity of Co-Re catalysts ' , Catalysis Communications , vol. 68 , pp. 53-57 . https://doi.org/10.1016/j.catcom.2015.04.016
Publication
Catalysis Communications
Status
Peer reviewed
DOI
https://doi.org/10.1016/j.catcom.2015.04.016
ISSN
1566-7367
Type
Journal article
Rights
Copyright 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Description
KMcA and JSJH would like to thank the EPSRC and the School of Chemistry, University of Glasgow for the provision of a DTA Studentship to KM. ARMcF and JSJH gratefully acknowledge the EPSRC for funding through project EP/J018384/1.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/6672

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