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Studies on the mechanism of the hydrogen electrode reaction by means of deuterium tracer—I. the reaction route

✍ Scribed by T. Matsushima; M. Enyo

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
839 KB
Volume
19
Category
Article
ISSN
0013-4686

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✦ Synopsis

The reaction route of the hydrogen electrode reaction on Ni, Rh, Au, and Pt at the reversible potential was investigated through the exchange reaction between deuterium and light water. Various reaction routes involving hydrogen adatom H(a) and adsorbed hydrogen molecule-ion H;(a) as the reaction intermediates were considered. In order to single out the correct reaction route, these routes were examined, without assuming u priori the existence of a single rate-determining step, for satisfactory interprctationofthe isotopic compositionofthe hydrogen gas during the exchange reaction. It is concluded that the reaction route consists of two consecutive steps, H2 t 2 H(a) and H(a) + B + H l B + e, where B represents H,O or OH-.

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Studies on the mechanism of the hydrogen
Studies on the mechanism of the hydrogen electrode reaction by means of deuterium tracer—II. The reaction mechanism
✍ T. Matsushima; M. Enyo 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 580 KB

The exchange reaction bctwccn deuterium gas and light water was conducted with Ni, Rh, and Pt catalyst. Through analysis of isotopic composition of the gaseous hydrogen during the exchange reaction, the exchange rates of the individual steps, H2 s 2H(a) and H(a) + B Z+ H+B + r, of the hydrogen elect

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The stoichiometric number of the hydrogen electrode reaction on Rh, Ni, Pt, Au, Ag, and Ir was determined by means of deuterium tracer at the reversible potential. It is shown that, along with the change of the rate-determining step in the reaction route, H, $2H(a) followed by H(a) + B z$ H+B + e, w

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✍ T. Matsushima; M. Enyo 📂 Article 📅 1976 🏛 Elsevier Science 🌐 English ⚖ 689 KB

The exchange reaction between deuterium gas and light water was conducted with a nickel electrode under anodic polarization. The rates of the constituent steps of the hydrogen electrode reaction were determined at various anodic overpotentials through analysis of the isotopic composition of the hydr