Non-Faradaic Electrochemical Modification of Catalytic Activity: Reversible Promotion of Platinum Metals Catalysts

By C. G. Vayenas; S. Bebelis; I. V. Yentekakis; P. Tsiakaras; H. Karasali

doi:10.1595/003214090X343122130

ISSN: 0032-1400

oa Non-Faradaic Electrochemical Modification of Catalytic Activity

Reversible Promotion of Platinum Metals Catalysts
Authors: By C. G. Vayenas¹, S. Bebelis¹, I. V. Yentekakis¹, P. Tsiakaras¹ and H. Karasali¹
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Affiliations: ¹ Institute of Chemical Engineering and High Temperature Chemical Processes and Department of Chemical Engineering, University of Patras, Greece
Source: Platinum Metals Review, Volume 34, Issue 3, Jul 1990, p. 122 - 130
DOI: https://doi.org/10.1595/003214090X343122130
- Published online: 01 Jul 1990

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Abstract

The catalytic activity and selectivity of platinum metals can be altered dramatically and reversibly by interfacing the metal with a solid electrolyte which supplies ions onto the catalyst surface under the influence of an external potential. The induced change in catalytic rate is orders of magnitude higher than the rate of ion supply. This new effect has revealed a surprisingly simple exponential relationship between catalytic activity and catalyst work function. The effect appears to apply to all heterogeneously catalysed reactions, but is particularly pronounced for platinum. This interfacing of electrochemistry and catalysis appears to offer some exciting theoretical and technological possibilities.

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/content/journals/10.1595/003214090X343122130

Non-Faradaic Electrochemical Modification of Catalytic Activity

Platinum Metals Review 34, 122 (1990); https://doi.org/10.1595/003214090X343122130

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oa Non-Faradaic Electrochemical Modification of Catalytic Activity

Reversible Promotion of Platinum Metals Catalysts

Abstract

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