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A comparison of the thermal and photochemical oxidation of 2‐propanol by two peroxoanions
Author(s) -
Bida Gerald,
Curci Ruggero,
Edwards John O.
Publication year - 1973
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550050512
Subject(s) - chemistry , photochemistry , absorption (acoustics) , thermal oxidation , quantum yield , ion , propanol , acetone , thermal , chain propagation , oxygen , analytical chemistry (journal) , thermodynamics , organic chemistry , ethanol , optics , physics , silicon , fluorescence , monomer , polymer
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.