Abstract
Consideration of the changes in free energy shows that the assumed initial steps in reactions of H2O2 with Fe2+ and Fe3+ in the free radical theory are not consistent. The free radical theory is unable to account for the Fe3+-initiated decomposition of H2O2 or for oxidations by it. In reactions with Fe2+ ions at high [H2O2], where O2 evolution reaches a limit, such limit is not foreseen by the free radical model. At lower [H2O2], because of a disallowed substitution in the equation used, the interpretation is not valid. It appears, therefore, that free radicals derived from H2O2 do not provide a suitable basis for constructing models for these reactions. Non-radical models are more successful in interpreting experimental results.
Original language | English |
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Pages (from-to) | 171-175 |
Number of pages | 5 |
Journal | Reactions |
Volume | 4 |
Issue number | 1 |
DOIs | |
State | Published - Mar 2023 |
Bibliographical note
Publisher Copyright:© 2023 by the author.
Keywords
- catalysis
- Fe
- Fe
- Fenton reaction
- free energy
- free radicals
- HO