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- W2056101065 abstract "The kinetics and mechanism of the reaction of chemisorbed oxide (Pt-O) layer on a smooth Pt electrode with H2 dissolved in 1 M H2SO4 solution were investigated under the open circuit condition. It was found that a monolayer of Pt-O on the electrode surface is reduced first at a slow rate which is of second order in chemisorbed oxygen in the range 1 ≧ θ ≥ 0·65 and then at a rapid rate which is proportional to (1 – nθ)2 in the range 0·6 ≥ θ > 0, where θ is the fraction of the surface covered by oxygen. The factor n, which was constant for the electrode oxidized under a given condition, was assumed to be the number of Pt sites deactivated by each one of the chemisorbed oxygen atoms. For the transiently formed oxide, n was estimated to be 1·64. It was also observed that all over the coverage range the reaction rate was proportional to the partial pressure of H2. The variation in reduction rate with the decrease of the coverage was interpreted in terms of change in reduction mechanism from the chemical reaction to the electrochemical reaction." @default.
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- W2056101065 date "1975-10-01" @default.
- W2056101065 modified "2023-09-26" @default.
- W2056101065 title "Kinetics and mechanism of reduction of oxide film on smooth platinum electrodes with hydrogen" @default.
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- W2056101065 doi "https://doi.org/10.1016/0013-4686(75)85008-0" @default.
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