期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 117, 期 -, 页码 18-28出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2012.01.004
关键词
Dichlorobenzene; Ozone; Vanadium pentoxide loaded; Alumina; Silica; Titania; Mucochloric acid
资金
- National Research Foundation, Pretoria
- University of KwaZulu-Natal
Ozone initiated oxidation of 1,2-dichlorobenzene ( DCB) in aqueous system catalyzed by different loadings of V2O5 supported on metal oxides namely; Al2O3. SiO2 and TiO2 was investigated. Catalyst materials were characterized by different surface techniques including BET, TPD, SEM, FT-IR, ICP, and XRD methods. Mucochloric acid (MCA) was identified to be main oxidation product. The conversion and selectivity of MCA were compared. With 5% V2O5, all three supports gave 100% conversion and 100% selectivity after 5 h ozonation. Conversion efficiency of the support was SiO2 > Al2O3 > TiO2 for 2 h ozonation duration and 5% V2O5 loaded catalysts registered higher conversions than with 1% loaded. Probable reaction scheme is described. (C) 2012 Elsevier B.V. All rights reserved.
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