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Chlorinated aromatic compounds in (waste) gases can be removed and/or dehalogenated by passing over a bed of activated carbon (AC) in a hydrogen containing atmosphere. Dehalogenation of the model compound chlorobenzene (PhCl) to HCl is complete at 490 o C--rather than the ~900 o C needed for the mere gas-phase reaction--but part of the benzene moieties is retained on the AC, resulting...
The hydrogenolysis of vapors of chlorobenzene derivatives (ZPhCl, where Ph denotes a benzene ring) when passed over a bed of activated carbon (AC) in a H 2 /N 2 atmosphere was investigated. Dehalogenation occurred readily between 200 and 550 o C, depending on the derivative. The less volatile compounds were more strongly adsorbed, and their conversion occurred at lower temperatures...
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