e-journal
Supercritical fluid extraction and on-line hydrodechlorination of chlorinated biphenyls catalyzed by polymer-stabilized palladium nanoparticles
Abstract.
Polychlorinated biphenyls spiked in soil can be extracted by a continuous flow supercritical fluid carbon
dioxide system and converted on-line to bicyclohexyl using a polymer-stabilized palladium nanoparticle
catalyst. The catalytic hydrodechlorination of 4-chlorobiphenyl to biphenyl follows a pseudo-first-order
reaction kinetics. The subsequent hydrogenation of biphenyl to bicyclohexyl involves two steps with
cyclohexylbenzene as an intermediate. The hydrogenation reactions also follow pseudo-first-order
kinetics and the rate constants are given in this paper.
Keywords: Polychlorinated biphenyl, Hydrodechlorination, Palladium nanoparticle, Catalysis
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