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Catalysts 2012, 2(4), 422-433; doi:10.3390/catal2040422

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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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)
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Abstract

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
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

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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