Kinetic study of the catalytic decomposition of H2O2 in phosphoric acid medium

被引：18
作者：
Zeineb, Omri [1 ]
Hedi, Ben Amor [1 ]
Jeday, Mohamed Razak [1 ]
Cheker, Chtara [2 ]
机构：
[1] Univ Gabes, Natl Engn Sch Gabes, Res Unit Energet & Environm, Gabes 6029, Tunisia
[2] Tunisian Chem Grp, Management Sci Res, Gabes, Tunisia
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 02期
关键词：
Hydrogen peroxide; Phosphoric acid; Catalytic decomposition; H2O2; decomposition; Fenton reagent; PHOSPHATE; ROCK;
D O I：
10.1016/j.ijhydene.2014.09.144
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：
The kinetics of hydrogen peroxide decomposition in phosphoric acid media containing ferrous ion was investigated. The results indicated that this reaction followed the pseudo-first-order kinetic model. The decomposition rate of H2O2 was accelerated by increasing Fe2+ concentrations and temperature. However, higher levels of H2O2 inhibited the reaction kinetics. Based on the rate constants obtained at different temperatures, the empirical Arrhenius expression of H2O2 decomposition was derived. The derived activation energy for H2O2 decomposition by ferrous ions is 57.1 kJ/mol. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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页码：1278 / 1282
页数：5
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