Efficient conversion of 1,2-dichlorobenzene to mucochloric acid with ozonation catalyzed by Vb>2b>Ob>5b> loaded metal oxides

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• 作者：Estelle C. Chetty ; Venkat B. Dasireddy ; Suresh Maddila ; S.B. Jonnalagadda ; ^{jonnalagaddas@ukzn.ac.za}
• 关键词：Dichlorobenzene ; Ozone ; Vanadium pentoxide loaded ; Alumina ; Silica ; Titania ; Mucochloric acid
• 刊名：Applied Catalysis B ; Environmental
• 出版年：2012
• 期刊代码：4_09263373
• 类别：ce
• 出版时间：18 May, 2012
• 卷：117-118
• 期：Complete
• 页码：18-28
• 文件大小：1102 K

摘要

Ozone initiated oxidation of 1,2-dichlorobenzene (DCB) in aqueous system catalyzed by different loadings of Vb>2b>Ob>5b> supported on metal oxides namely; Alb>2b>Ob>3b>, SiOb>2b> and TiOb>2b> 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%Vb>2b>Ob>5b>, all three supports gave 100%conversion and 100%selectivity after 5 h ozonation. Conversion efficiency of the support was SiOb>2b> > Alb>2b>Ob>3b> > TiOb>2b> for 2 h ozonation duration and 5%Vb>2b>Ob>5b> loaded catalysts registered higher conversions than with 1%loaded. Probable reaction scheme is described.