Hydrogenation of ethylene on metal electrodes. Part 3.—Isotopic exchange and deuteration reactions at a platinum electrode on open circuit
- 1 January 1975
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 71, 1573-1581
- https://doi.org/10.1039/f19757101573
Abstract
Deuteration of ethylene and isotopic exchange of deuterium in the systems of D2/H2O, C2H4+ C2D4/H2O and D2+ C2H4+ C2D4/H2O are studied at a platinum electrode on open circuit in 1 N HClO4 solution. Results show that (i) ethylene undergoes molecular, irreversible adsorption, (ii) in region E where PH/PE > 5–6, deuterium atoms from D2 do not appear in the product ethane, whereas in region H, PH/PE < 5–6, deuterium atoms appear in the product at ca. 46 %, and (iii) the deuterium atoms in ethane are distributed almost randomly. These results are discussed in terms of the relative rates of the elementary steps of the mechanism.Keywords
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