characterization of the two-step reaction mechanism of phenol decomposition by a Fenton reaction

被引：16

作者：

Valdes, Cristian ^{[2
]}

Alzate-Morales, Jans ^{[1
]}

Osorio, Edison ^{[3
]}

Villasenor, Jorge ^{[2
]}

Navarro-Retamal, Carlos ^{[1
]}

机构：

[1] Univ Talca, Fac Ingn, Ctr Bioinformat Simulac Mol, 2 Norte 685,Casilla 721, Talca, Chile

[2] Univ Talca, Inst Quim & Recursos Nat, Lab Fisicoquim, Talca, Chile

[3] Fdn Univ Luis Amigo, Dept Ciencias Basicas, Medellin, Colombia

来源：

CHEMICAL PHYSICS LETTERS | 2015年 / 640卷

关键词：

OXIDATION MECHANISM; HYDROXYL RADICALS; HYDROGEN-PEROXIDE; KINETICS; ACTIVATION; ATOMS; H2O2;

D O I：

10.1016/j.cplett.2015.10.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Phenol is one of the worst contaminants at date, and its degradation has been a crucial task over years. Here, the decomposition process of phenol, in a Fenton reaction, is described. Using scavengers, it was observed that decomposition of phenol was mainly influenced by production of hydroxyl radicals. Experimental and theoretical activation energies (Ea) for phenol oxidation intermediates were calculated. According to these Ea, phenol decomposition is a two-step reaction mechanism mediated predominantly by hydroxyl radicals, producing a decomposition yield order given as hydroquinone > catechol > resorcinol. Furthermore, traces of reaction derived acids were detected by HPLC and GS-MS. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：16 / 22

页数：7

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