Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 153, Issue 1-2, Pages 231-236Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1381-1169(99)00352-0
Keywords
chlorobenzene; hydrodechlorination; nickel and palladium catalysts; C-13 NMR; D-2 NMR
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The catalytic hydrodechlorination of chlorobenzene with Ni/C, Pd/C and Ni98Pd2/C in ethanol was studied with D-2 and C-13{H-1} NMR. Two dechlorination routes of this reaction (ionic and free-radical) are suggested depending upon the nature of the active hydrogen species. At the same time two competitive sources of hydrogen for hydrogenolysis of the C-Cl bond - molecular hydrogen and solvent (ethanol) molecules - are readily apparent from experiments with molecular deuterium. (C) 2000 Elsevier Science B.V. All rights reserved.
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