Biphenyl hydrogenation over supported transition metal catalysts under supercritical carbon dioxide solvent

作者: Norihito Hiyoshi , Chandrashekhar V. Rode , Osamu Sato , Masayuki Shirai

DOI: 10.1016/J.APCATA.2005.04.021

关键词: ChemistryBiphenylHydrocarbonHydrogen storageInorganic chemistryOrganic chemistryCatalyst supportSupercritical carbon dioxideCatalysisRhodiumCarbon

摘要: Catalytic hydrogenation of biphenyl to bicyclohexyl, an organic hydrogen storage medium, was examined over supported transition metal catalysts in supercritical carbon dioxide solvent. The yield of bicyclohexyl was almost 100% over the charcoal-supported rhodium (Rh/C) and ruthenium (Ru/C) catalysts at the temperature of 323K, which was much lower than that required for biphenyl hydrogenation in organic solvents (573K). The initial activity was higher over the Rh/C catalyst, while the initial selectivity to bicyclohexyl was higher over …

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