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- W1997563441 abstract "Easy hydrogenolysis of benzene derivatives in flow reactors packed with activated carbon (AC) and hydrogen as a bath gas is reported. Fast desubstitution (below 600 °C) — PhX → PhH — is encountered for chloro-, bromo-, and iodobenzene, modest for X = OCH3, NO2 and CH3, and slow for X = NH2, F, OH, CN and Ph. In general, compared with homogeneous hydrogenolysis, AC lowers the reaction temperature for complete conversion with 200 °C. As to the mechanism, hydrogen transfers from hydroaryl and/or dihydroarene type surface groups appear to play a role in the displacement of X from aryl-X. The relatively fast conversion of chloro-, bromo- and iodobenzene is explained by a process in which an adsorbed substrate adds to a hydroaryl-type stabilized radical present on the AC surface, with elimination of the substituent as X." @default.
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- W1997563441 date "1996-01-01" @default.
- W1997563441 modified "2023-09-26" @default.
- W1997563441 title "Gas phase hydrogenolysis mediated by activated carbon: Monosubstituted benzenes" @default.
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- W1997563441 doi "https://doi.org/10.1016/0008-6223(96)00012-7" @default.
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