The Reactions of Photogenerated Solvated Electrons in Methanolic Solutions of Potassium Iodide
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概要
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Hydrogen formation from UV-irradiated potassium iodide solutions was studied using CH<SUB>3</SUB>OH and CH<SUB>3</SUB>OD as the solvents and nitrous oxide and acids as the solvated-electron scavengers. The maximum quantum yield of the solvated electron in CH<SUB>3</SUB>OH was found to be 0.6 both in nitrous oxide and in acid solutions. It was concluded that the solvated electron produces hydrogen in pure methanol through Reaction (1), e<SUP>−</SUP><SUB>solv</SUB>→H+CH<SUB>3</SUB>O<SUP>−</SUP>, with a quantum yield of 0.35 at 25°. The rate constant of this reaction is 5.4×10<SUP>5</SUP>sec<SUP>−1</SUP>, corresponding to a half-life of 1.3 μsec. From the results obtained with acid solutions, it was also concluded that nitrous oxide reacts with a solvated electron to produce one molecule of nitrogen in neutral methanol.
- 公益社団法人 日本化学会の論文
著者
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Imamura Masashi
The Institute of Physical and Chemical Research
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SEKI Hiroshi
The Institute of Physical and Chemical Research
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