Enhancement of Hydrothermal Oxidation of Chlorobenzene by the Fenton-type Reaction Using Cu(II)-grafted Tungsten Trioxide Catalyst

• Noritsugu Kometani

  Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University

• Yasuaki Sumiyoshi

  Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University

Abstract

The catalytic and photocatalytic hydrothermal oxidation of chlorobenzene has been examined at reaction temperatures ranging from 25 to 400 °C and at a fixed pressure of 30 MPa, using Cu(II)-grafted tungsten trioxide (Cu/WO3) as the catalyst and hydrogen peroxide as the oxidizing reagent. The decomposition efficiency of chlorobenzene is dramatically promoted with the aid of Cu/WO3, and approximately 100% decomposition efficiency has been achieved in the dark at a reaction temperature of 200 °C. It is proposed that the formation of hydroxyl radicals from hydrogen peroxide via the Fenton-type reaction catalyzed by Cu ions is subjected to substantial acceleration under subcritical conditions of water at around 200–300 °C, resulting in enhancement of the decomposition efficiency. Irradiation of catalysts with near-UV–visible light also facilitates the decomposition of chlorobenzene because of the photocatalytic action.

Journal

• Chemistry Letters

  Chemistry Letters 42 (8), 804-806, 2013-05-31

  Oxford University Press (OUP)

Keywords

• General Chemistry

Details

• CRID: 1360283694082105728
• NII Article ID: 10031189255
• NII Book ID: AA00603318
• DOI: 10.1246/cl.130313
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/42/8/804/55635666/cl.130313.pdf
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