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✦   LIBER   ✦

Catalytic hydroprocessing of chlorinated benzenes

✍ Scribed by Bijan F. Hagh; David T. Allen

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
507 KB
Volume
45
Category
Article
ISSN
0009-2509

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✦ Synopsis

The catalytic hydrodechlorination reactions of hexachlorobenzene and all of its dechlorinated intermediates were examined in a differential microflow reactor. A presulfided NiMo&Al& catalyst and a reaction temperature of 325Β°C were used in all of the exoeriments. The dechlorination rate data and Droduct selectivities for hexachlorobenzene and other chlorinated benzen& demonstrate that reaction steps frequently &tvolve removal of multiple chlorine atoms. Not all passible intermediates are form&, all of the observed intermediate dechlorination steps proceed at comparable rates. A reaction mechanism based on an arenium ion intermediate is proposed to explain observed selectivities.

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