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Issue 9, 2019
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The reactivity and pathway of Fenton reactions driven by hydroxybenzoic acids: the effect of hydroxylation

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Abstract

Hydroxybenzoic acids (HBAs) are neglected as promoters of the Fenton reaction due to their low reduction capacity of Fe(III) and facile capture of hydroxyl radicals. However, autocatalysis often occurs in HBA degradation by the Fe(III)/H2O2 system. In this study, we investigated the effect of various HBA compounds on the Fenton reaction, and found that model HBAs also showed good catalytic activity. Their capability to promote the Fenton reaction is closely related to their readiness to be transformed into a hydroquinone-like (HQ-like) species. Electron-donating groups (EDGs) can accelerate the hydroxylation of aromatic compounds, thus leading to the rapid formation of a HQ-like species.

Graphical abstract: The reactivity and pathway of Fenton reactions driven by hydroxybenzoic acids: the effect of hydroxylation

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Article information


Submitted
23 Mar 2019
Accepted
23 Jul 2019
First published
24 Jul 2019

Environ. Sci.: Water Res. Technol., 2019,5, 1507-1514
Article type
Paper

The reactivity and pathway of Fenton reactions driven by hydroxybenzoic acids: the effect of hydroxylation

D. Tang, G. Zhang, Y. Wang, F. Chen and J. Ma, Environ. Sci.: Water Res. Technol., 2019, 5, 1507
DOI: 10.1039/C9EW00250B

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