The reactions of organic radicals formed by some "fenton-like" reagents

Gideon Czapski; A. Samuni; D. Meisel

doi:10.1021/j100690a012

The reactions of organic radicals formed by some "fenton-like" reagents

Gideon Czapski^*, A. Samuni, D. Meisel

^*Corresponding author for this work

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

70 Scopus citations

Abstract

The reactions of Fe²⁺, Cr²⁺, V⁴⁺, and Ti³⁺ with H₂O₂ in the presence of 2-propanol were studied using the esr flow technique. It was shown that all these "Fenton-like" reagents form OH radicals which can react with the 2-propanol. From studies of the esr intensities of the alcohol radical as a function of H₂O₂, Ti³⁺, and that of added Ti⁴⁺, Fe³⁺, and Cr³⁺ it is concluded that these ions react faster with (CH₃)COH than with CH₂CHOHCH₃. The reaction of the alcohol radicals with H₂O₂ was also studied by radiolysis experiments. The unusual kinetics and properties of "Fenton-like reagent" and OH and R radicals generated by these reagents previously reported is shown to be due to wrong kinetic assumptions.

Original language	English
Pages (from-to)	3271-3280
Number of pages	10
Journal	Journal of Physical Chemistry
Volume	75
Issue number	21
DOIs	https://doi.org/10.1021/j100690a012
State	Published - 1971
Externally published	Yes

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abstract = "The reactions of Fe2+, Cr2+, V4+, and Ti3+ with H2O2 in the presence of 2-propanol were studied using the esr flow technique. It was shown that all these {"}Fenton-like{"} reagents form OH radicals which can react with the 2-propanol. From studies of the esr intensities of the alcohol radical as a function of H2O2, Ti3+, and that of added Ti4+, Fe3+, and Cr3+ it is concluded that these ions react faster with (CH3)COH than with CH2CHOHCH3. The reaction of the alcohol radicals with H2O2 was also studied by radiolysis experiments. The unusual kinetics and properties of {"}Fenton-like reagent{"} and OH and R radicals generated by these reagents previously reported is shown to be due to wrong kinetic assumptions.",

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AB - The reactions of Fe2+, Cr2+, V4+, and Ti3+ with H2O2 in the presence of 2-propanol were studied using the esr flow technique. It was shown that all these "Fenton-like" reagents form OH radicals which can react with the 2-propanol. From studies of the esr intensities of the alcohol radical as a function of H2O2, Ti3+, and that of added Ti4+, Fe3+, and Cr3+ it is concluded that these ions react faster with (CH3)COH than with CH2CHOHCH3. The reaction of the alcohol radicals with H2O2 was also studied by radiolysis experiments. The unusual kinetics and properties of "Fenton-like reagent" and OH and R radicals generated by these reagents previously reported is shown to be due to wrong kinetic assumptions.

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The reactions of organic radicals formed by some "fenton-like" reagents

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