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Heterogeneous photocatalytic decomposition of gas-phase chlorobenzene

Paper ID Volume ID Publish Year Pages File Format Full-Text
48975 46536 2007 8 PDF Available
Title
Heterogeneous photocatalytic decomposition of gas-phase chlorobenzene
Abstract

Bench-scale laboratory experiments were conducted using broad spectrum UV-A to induce TiO2-based photocatalytic treatment of mono-chlorobenzene under aerobic and anaerobic conditions. Previous photolytic-based studies conducted on chlorinated aromatics support the decomposition pathway of de-halogenation followed by cleavage of the aromatic ring due to attack by OH radicals. However, in this study of anaerobic degradation, GC–MS and HPLC analyses of intermediate by-products accumulated on the catalyst surface indicate that chlorophenols (o-, m-, p-) are the predominant species rather than benzene or phenol, and that dechlorination proceeds after ring cleavage.

Keywords
Photocatalyst; TiO2; Chlorobenzene; Mechanism; Intermediates
First Page Preview
Heterogeneous photocatalytic decomposition of gas-phase chlorobenzene
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 71, Issues 3–4, 15 February 2007, Pages 135–142
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis