"Hydrogen-Catalyzed" Dehydrogenation: A Supercritical Conundrum

Hot spots: The surprising, apparently catalytic effect of H2 in the dehydrogenation of 1 in supercritical CO2 is the result of thermal hot spots (see thermal image of reactor) generated in the catalyst bed by an initial exothermic hydrogenation. The localized heating forces the dehydrogenation react...

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Published inAngewandte Chemie International Edition Vol. 44; no. 46; pp. 7588 - 7591
Main Authors Hyde, Jason R., Walsh, Ben, Poliakoff, Martyn
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 25.11.2005
WILEY‐VCH Verlag
Subjects
carbon dioxide
dehydrogenation
heterogeneous catalysis
reaction mechanisms
supercritical fluids
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ISSN1433-7851
1521-3773
DOI10.1002/anie.200502049

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Summary:Hot spots: The surprising, apparently catalytic effect of H2 in the dehydrogenation of 1 in supercritical CO2 is the result of thermal hot spots (see thermal image of reactor) generated in the catalyst bed by an initial exothermic hydrogenation. The localized heating forces the dehydrogenation reaction which also gives the diene 2 by a route that is potentially much simpler than the established procedure.
Bibliography:ArticleID:ANIE200502049
We thank the EPSRC for Grant GR/S87409 and for a CASE studentship to B.W. and Thomas Swan & Co. Ltd for support. We thank Dr. Pete Licence, Dr. Stephen Ross, and Messrs Mark Guyler, Peter Fields, Rich Wilson, David Litchfield, and James Warren for their help and support.
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200502049