Reaction of hydroxyl radicals with ammonia in liquid water at elevated temperatures

B. Hickel, K. Sehested

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The reaction of hydroxyl radical with ammonia in aqueous solutions has been studied by pulse radiolysis in the temperature range 20-200-degrees-C. The rate constant of the reaction was determined by monitoring the decay of the OH radical absorption at 260 nm for different concentrations of ammonia. At room temperature the rate constant is (9.7 +/- 1) x 10(7) dm3 mol-1 s-1. In the whole range of temperatures the Tate constant follows Arrhenius law with an activation energy of (5.7 +/- 1) kJ mol-1. The protective effect of dissolved hydrogen on the radiolytic decomposition of ammon a is discussed.
    Original languageEnglish
    JournalRadiation Physics and Chemistry
    Volume39
    Issue number4
    Pages (from-to)355-357
    ISSN0969-806X
    Publication statusPublished - 1992

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