期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 15, 期 33, 页码 8303-8309出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200802572
关键词
activation parameters; Fenton reaction; kinetics; mechanism; oxidation
资金
- The Council of Higher Education
- Israel Atomic Energy Commission
- Deutsche Forschungsgemeinschaft
The kinetics of the Fenton reaction was studied in detail. A second reaction step in the presence of excess H2O2 is attributed to formation of the complex Fe-III(-O2H)(aq). Therefore, the reaction of Fe(H2O)(6)(2+) with Fe-III(-O2H)(aq) in the presence of Fe-II to form Fe-aq(III) (k = (7.7 +/- 1.5) x 10(5) M-1 S-1) may contribute to the overall Fenton reaction, and could account for some of the debate in the literature concerning its detailed mechanism. If this is correct for LFeIII(-O2H)(aq) also, then it might be of significant biological importance. The activation parameters Delta H double dagger, Delta S double dagger, and Delta V double dagger for the Fenton reaction were measured under various experimental conditions, and are used in the mechanistic interpretation.
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