Influence of support on surface basicity and catalytic activity in oxidative coupling of methane of Li-MgO deposited on different commercial catalyst carriers

Choudhary, Vasant R. ; Mulla, Shafeek A. R. ; Uphade, Balu S. (1998) Influence of support on surface basicity and catalytic activity in oxidative coupling of methane of Li-MgO deposited on different commercial catalyst carriers Journal of Chemical Technology & Biotechnology, 72 (2). pp. 99-104. ISSN 0268-2575

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Official URL: http://www3.interscience.wiley.com/journal/6100297...

Related URL: http://dx.doi.org/10.1002/(SICI)1097-4660(199806)72:2

Abstract

Deposition of Li-MgO catalyst on commonly used supports (containing SiO2, Al2O3, SiC, ZrO2, HfO2, etc.) causes a drastic reduction in the catalytic activity/selectivity for the oxidative methane coupling reaction and also in both the total and strong surface basicity. The decrease in the catalytic activity/selectivity and basicity is attributed to strong chemical interactions between the catalyst and support which occur during the high temperature (750°C) calcination/pretreatment of the catalyst. The chemical interactions result in catalytically less active binary and ternary metal oxides containing Li and/or Mg, thus deactivating the Li-MgO catalyst by consuming its active components.

Item Type:Article
Source:Copyright of this article belongs to Society of Chemical Industry.
Keywords:Oxidative coupling of Methane; Li-MgO catalyst; Catalyst supports
ID Code:10635
Deposited On:04 Nov 2010 06:29
Last Modified:28 May 2011 11:53

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