A comparison of the thermal and photochemical oxidation of 2‐propanol by two peroxoanions

International Journal of Chemical Kinetics - Tập 5 Số 5 - Trang 859-868 - 1973
Gerald T. Bida1, Ruggero Curci1, John O. Edwards1
1Metcalf Chemical Laboratories, Brown University, Providence, Rhode Island 02912

Tóm tắt

Abstract

The chain length (i.e., relative quantum yield) for the oxidation of 2‐propanol by peroxodisulfate ion at 25°C has been studied. A number of initial experiments were carried out in order to clarify the influence of dissolved oxygen, light intensity, cupric ion, and acetone absorption. After these problems were understood, conditions satisfactory for evaluation of chain length were chosen. The chain length was found to be 500 (to within ±100). The difference between this value and the thermal oxidation chain length of 1800 at 60° is, in both direction and magnitude, as expected for a common mechanism and a low activation energy for the propagation steps. A remarkable difference is seen for comparable reactions of peroxodisulfate and peroxodiphosphate anions.

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International Journal of Chemical Kinetics

Tập 5 Số 5

859-868

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