Application of a supported iron oxyhydroxide catalyst in oxidation of benzoic acid by hydrogen peroxide

被引：145

作者：

Chou, SS ^{[1
]}

Huang, CP ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Inst Environm Engn, Hsinchu, Taiwan

来源：

CHEMOSPHERE | 1999年 / 38卷 / 12期

关键词：

catalysis; iron oxide; oxidation; hydrogen peroxide;

D O I：

10.1016/S0045-6535(98)00474-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Oxidation of benzoic acid was studied via Fenton-Like reaction using an innovative supported gamma-FeOOH catalyst. The decomposition kinetics of hydrogen peroxide was investigated first. Oxidation of benzoic acid by hydrogen peroxide was performed to understand the effects of initial pH and hydrogen peroxide dosage. The treatment efficiency of benzoic acid at an initial pH of 3.2 was higher than at initial pHs of 6.0 and 10.0; this can be partly explained by reductive dissolution of gamma-FeOOH. Therefore, the extent of heterogeneous catalysis was evaluated. We found that the majority of oxidation occurred on the catalyst surface, with some occurred in the solution due to iron dissolution of the catalyst. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2719 / 2731

页数：13

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