Deuterium isotope effects in the photochemical evolution of hydrogen from aqueous ferrous solutions

Joshua Jortner*, Gabriel Stein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The dependence of the isotope separation factor in the photochemical evolution of hydrogen from aqueous solutions of ferrous sulfate on the concentration of H+, ferrous, and ferric ions and on the concentration of an organic scavenger (methanol) was investigated. The results are interpreted in terms of a consecutive mechanism involving isotope separation in each of two steps. The respective separation factors in the first step (leading to H atom formation) and in the second (involving oxidation of Fe2+ by H) are derived. Isotope effects in radiation and photochemistry are compared. The isotope separation factors obtained support the intermediate hydride formation mechanism for the oxidation of Fe2+ by H atoms.

Original languageEnglish
Pages (from-to)2200-2204
Number of pages5
JournalJournal of Physical Chemistry
Volume66
Issue number11
DOIs
StatePublished - 1962
Externally publishedYes

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