Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 49, Issue 3, Pages 181-185Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2003.12.010
Keywords
supercritical carbon dioxide; selective hydrogenation; isophorone; charcoal supported palladium catalyst
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Catalytic hydrogenation of 3,3,5-trimethyl-2-cyclohexen-1-one (isophorone) was examined over several supported noble metal catalysts in supercritical carbon dioxide. Charcoal supported rhodium and platinum catalysts were found to be active for the isophorone hydrogenation to 3,3,5-trimethylcyclohexanone (dihydroisophorone), but undesirable successive hydrogenation to 3,3,5-trimethylcyclohexanol also proceeded. Supported palladium catalysts were less active than the Supported rhodium and platinum catalysts, but were highly selective for dihydroisophorone. (C) 2003 Elsevier B.V. All rights reserved.
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