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ESR studies on reactivity of HO2 radicals in polycrystalline ice: Non-monotonic changes of disproportionation rate in the temperature range 100–200 K

✍ Scribed by Janusz Bednarek; Andrzej Plonka


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
404 KB
Volume
44
Category
Article
ISSN
0969-806X

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✦ Synopsis


The kinetics of HO, radicals in UV-irradiated frozen dilute solutions of H,O, were followed by the ESR technique. Radical disproportionations at the irradiation temperature were found to be adequately described in terms of dispersive kinetics by a second-order equal-concentration kinetic equation with rate parameters changing non-monotonically in the temperature range 100-200 K. These changes are thought to occur due to well separated structural relaxation regions of polycrystalline ice in the above temperature range.