Ozonation of substituted phenols in aqueous solutions over CuO-Al2O3 catalyst

被引：37

作者：

Udrea, I ^{[1
]}

Bradu, C ^{[1
]}

机构：

[1] Univ Bucharest, Fac Chem, Dept Chem Technol & Catalysis, Bucharest 70346, Romania

来源：

OZONE-SCIENCE & ENGINEERING | 2003年 / 25卷 / 04期

关键词：

ozone; catalytic ozonation; chlorophenols; nitrophenols; copper oxide-alumina catalyst; phenols oxidation by-products; industrial wastewater;

D O I：

10.1080/01919510390481658

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The oxidation of aqueous solutions of substituted phenols, chlorophenols (CPs) and nitrophenols (NPs), at 21 +/- 0.5 degreesC and atmospheric pressure, by ozone over a copper-alumina catalyst system was studied. The total disappearance of phenol compounds for 15 to 30 minute reaction times was observed. The presence of the catalyst increased the reaction rate, diminished the ozone consumption and caused an advanced degradation of phenols. A number of six by-products was identified by gas chromatography / mass spectrometry technique (GC/MS), with or without silylation. Based on the experimental data several mechanistic suggestions for the catalytic ozonation are made.

引用

页码：335 / 343

页数：9

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