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Catalytic wet air oxidation of phenol over CeO2-TiO2 catalyst in the batch reactor and the packed-bed reactor by Shaoxia Yang; Wanpeng Zhu; Jianbing Wang; Zhengxiong Chen is a Environmental Science article available to read on EtoBox.

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CeO 2 -TiO 2 catalysts are prepared by coprecipitation method, and the activity and stability in the catalytic wet air oxidation (CWAO) of phenol are investigated in a batch reactor and packed-bed reactor. CeO 2 -TiO 2 mixed oxides show the higher activity than pure CeO 2 and TiO 2 , and CeO 2 -TiO 2 1/1 catalyst displays the highest activity in the CWAO of phenol. In a batch reactor, COD and TOC removals are about 100% and 77% after 120 min in the CWAO of phenol over CeO 2 -TiO 2 1/1 catalyst at reaction temperature of 150 • C, the total pressure of 3 MPa, phenol concentration of 1000 mg/L, and catalyst dosage of 4 g/L. In a packed-bed reactor using CeO 2 -TiO 2 1/1 particle catalyst, over 91% COD and 80% TOC removals are obtained at the reaction temperature of 140 • C, the air total pressure of 3.5 MPa, the phenol concentration of 1000 mg/L for 100 h continue reaction. Leaching of metal ions of CeO 2 -TiO 2 1/1 particle catalyst is very low during the continuous reaction. CeO 2 -TiO 2 1/1 catalyst exhibits the excellent activity and stability in the CWAO of phenol.

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Author

Shaoxia Yang; Wanpeng Zhu; Jianbing Wang; Zhengxiong Chen

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3894)

Published

2008

Language

EN

Field

Environmental Science (Physical Sciences)