The fenton reaction. Dependence of the rate on pH

Mordechai L. Kremer

doi:10.1021/jp020654p

The fenton reaction. Dependence of the rate on pH

Mordechai L. Kremer^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

162 Scopus citations

Abstract

The pH dependence of the evolution of O₂ in the Fenton reaction has been studied by using an indirect method for measuring [O₂]. The results confirmed observations of previous workers, namely, that the evolution of O₂ diminished as the pH was lowered. A quantitative analysis of the dependence of [O₂] and [Fe²⁺] during the reaction as a function of time showed that the pH dependence of the course of the reaction can be accounted for by assuming an acid base reaction of the active intermediate: FeO²⁺ + H⁺ ⇄ = FeOH³⁺ FeOH³⁺ is the active entity in the reaction with Fe²⁺ to produce Fe³⁺ ions, while the other form FeO²⁺ is involved in reactions leading to O₂ evolution.

Original language	English
Pages (from-to)	1734-1741
Number of pages	8
Journal	Journal of Physical Chemistry A
Volume	107
Issue number	11
DOIs	https://doi.org/10.1021/jp020654p
State	Published - 20 Mar 2003

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title = "The fenton reaction. Dependence of the rate on pH",

abstract = "The pH dependence of the evolution of O2 in the Fenton reaction has been studied by using an indirect method for measuring [O2]. The results confirmed observations of previous workers, namely, that the evolution of O2 diminished as the pH was lowered. A quantitative analysis of the dependence of [O2] and [Fe2+] during the reaction as a function of time showed that the pH dependence of the course of the reaction can be accounted for by assuming an acid base reaction of the active intermediate: FeO2+ + H+ ⇄ = FeOH3+ FeOH3+ is the active entity in the reaction with Fe2+ to produce Fe3+ ions, while the other form FeO2+ is involved in reactions leading to O2 evolution.",

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N2 - The pH dependence of the evolution of O2 in the Fenton reaction has been studied by using an indirect method for measuring [O2]. The results confirmed observations of previous workers, namely, that the evolution of O2 diminished as the pH was lowered. A quantitative analysis of the dependence of [O2] and [Fe2+] during the reaction as a function of time showed that the pH dependence of the course of the reaction can be accounted for by assuming an acid base reaction of the active intermediate: FeO2+ + H+ ⇄ = FeOH3+ FeOH3+ is the active entity in the reaction with Fe2+ to produce Fe3+ ions, while the other form FeO2+ is involved in reactions leading to O2 evolution.

AB - The pH dependence of the evolution of O2 in the Fenton reaction has been studied by using an indirect method for measuring [O2]. The results confirmed observations of previous workers, namely, that the evolution of O2 diminished as the pH was lowered. A quantitative analysis of the dependence of [O2] and [Fe2+] during the reaction as a function of time showed that the pH dependence of the course of the reaction can be accounted for by assuming an acid base reaction of the active intermediate: FeO2+ + H+ ⇄ = FeOH3+ FeOH3+ is the active entity in the reaction with Fe2+ to produce Fe3+ ions, while the other form FeO2+ is involved in reactions leading to O2 evolution.

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The fenton reaction. Dependence of the rate on pH

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