Activation of Alkanes by Gold-Modified Lanthanum Oxide

J. Sa, M. Ace, J.J. Delgado, Alexandre Goguet, Christopher Hardacre, Kevin Morgan

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Functionalization of alkanes is much sought after for the production of fine and bulk chemicals. In particular, the oxidative activation of alkanes and their conversion to ethene and propene has been studied extensively, owing to the use of these alkenes in polymerization reactions. The greater reactivity of the products in comparison with the reactants has proven a major issue in this reaction as this can result in overoxidation, producing CO and CO2 and, therefore, reducing the alkene yield. Herein, the first application of supported gold catalysts for the direct activation of C2+ aliphatic alkanes with oxygen to form alkenes is demonstrated. This catalyst is particularly notable as it is highly active, selective to propene and ethene, and stable on stream over a 48 h period. Maintaining cationic gold is thought to be critical for the stability and this catalyst design provides the possibility of applying gold-based catalysts over a much wider temperature range than has been reported.
Original languageEnglish
Pages (from-to)394-398
Number of pages5
JournalCHEMCATCHEM
Volume3
Issue number2
DOIs
Publication statusPublished - 07 Feb 2011

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Lanthanum oxides
lanthanum oxides
Alkanes
Gold
Paraffins
alkanes
Alkenes
Chemical activation
activation
gold
alkenes
Olefins
catalysts
Catalysts
Propylene
Carbon Monoxide
polymerization
reactivity
Polymerization
Oxygen

Cite this

Sa, J. ; Ace, M. ; Delgado, J.J. ; Goguet, Alexandre ; Hardacre, Christopher ; Morgan, Kevin. / Activation of Alkanes by Gold-Modified Lanthanum Oxide. In: CHEMCATCHEM. 2011 ; Vol. 3, No. 2. pp. 394-398.
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Activation of Alkanes by Gold-Modified Lanthanum Oxide. / Sa, J.; Ace, M.; Delgado, J.J.; Goguet, Alexandre; Hardacre, Christopher; Morgan, Kevin.

In: CHEMCATCHEM, Vol. 3, No. 2, 07.02.2011, p. 394-398.

Research output: Contribution to journalArticle

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AU - Sa, J.

AU - Ace, M.

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AU - Morgan, Kevin

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AB - Functionalization of alkanes is much sought after for the production of fine and bulk chemicals. In particular, the oxidative activation of alkanes and their conversion to ethene and propene has been studied extensively, owing to the use of these alkenes in polymerization reactions. The greater reactivity of the products in comparison with the reactants has proven a major issue in this reaction as this can result in overoxidation, producing CO and CO2 and, therefore, reducing the alkene yield. Herein, the first application of supported gold catalysts for the direct activation of C2+ aliphatic alkanes with oxygen to form alkenes is demonstrated. This catalyst is particularly notable as it is highly active, selective to propene and ethene, and stable on stream over a 48 h period. Maintaining cationic gold is thought to be critical for the stability and this catalyst design provides the possibility of applying gold-based catalysts over a much wider temperature range than has been reported.

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