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Open AccessArticle

Carbon Aerogel-Supported Pt Catalysts for the Hydrogenolysis and Isomerization of n-Butane: Influence of the Carbonization Temperature of the Support and Pt Particle Size

Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071 Granada, Spain
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Catalysts 2012, 2(4), 422-433; https://doi.org/10.3390/catal2040422
Received: 18 July 2012 / Revised: 3 September 2012 / Accepted: 24 September 2012 / Published: 12 October 2012
(This article belongs to the Special Issue Aerogel Catalyst)
Carbon aerogels prepared at different carbonization temperatures and with varying mesopore volumes were used as supports for Pt catalysts to study the n-C4H10/H2 reaction. Mean Pt particle size depended on the mesopore volume of the support, showing a linear decrease when the mesopore volume increased. The turnover frequency (TOF) for hydrogenolysis was much higher than for isomerization in catalysts supported on carbon aerogels obtained at 900–950 °C. However, both TOF values were similar in catalysts supported on the carbon aerogel obtained at 500 °C. TOF for hydrogenolysis and isomerization were related to the mean Pt particle size in catalysts supported on carbon aerogels obtained at 900–950 °C. In addition, both reactions showed a compensation effect between the activation energy and pre-exponential factor, indicating that they have the same intermediate, i.e., the chemisorbed dehydrogenated alkane. View Full-Text
Keywords: carbon aerogels; Pt catalysts; n-butane hydrogenolysis; n-butane isomerization carbon aerogels; Pt catalysts; n-butane hydrogenolysis; n-butane isomerization
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Moreno-Castilla, C.; Carrasco-Marín, F.; Dawidziuk, M.B. Carbon Aerogel-Supported Pt Catalysts for the Hydrogenolysis and Isomerization of n-Butane: Influence of the Carbonization Temperature of the Support and Pt Particle Size. Catalysts 2012, 2, 422-433.

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