Comparative studies between classic and wireless electrochemical promotion of a Pt catalyst for ethylene oxidation
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A comparative study between a classic and a wireless electrochemical promotion experiment was undertaken as a tool towards the better understanding of both systems. The catalytic modification of a platinum catalyst for ethylene oxidation was studied. The catalyst was supported on yttria-stabilised-zirconia (YSZ), a known pure oxide ion conductor, for the classic experiment and La0.6Sr0.4Co0.2Fe0.8O3–δ—a mixed oxide ion electronic conductor—was used for the wireless experiment. The two systems showed certain similarities in terms of the reaction classification (in both cases electrophobic behaviour was observed) and the promotion mechanism. Significant difference was observed in the time scales and the reversibility of the induced rate modification.
KeywordsElectrochemical promotion Mixed conductor Catalysis remote control
The authors thank Mr Craig Anderson for obtaining the classic EPOC experimental results. Funding from the Engineering and Physical Sciences Research Council via grant number EP/E033687/1 is acknowledged. ISM thanks the Centre for Process Innovation, Wilton, UK, for financial support.
- 14.Poulidi D, Anderson C, Metcalfe IS (Submitted for publication) Solid State IonGoogle Scholar