caa a22 4500 47581648X CHVBK 20180406123811.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1023/A:1026597411612 doi (NATIONALLICENCE)springer-10.1023/A:1026597411612 In situ controlled electrochemical promotion of catalyst surfaces: Pd-catalysed ethylene oxidation [Elektronische Daten] [K. Yiokari, S. Bebelis] The catalytic activity of polycrystalline Pd films deposited on 8 mol% Y2O3-stabilized-ZrO2 (YSZ), an O2−-conductor, can be altered reversibly by varying the potential of the Pd catalyst film via the effect of nonfaradaic electrochemical modification of catalytic activity (NEMCA) or electrochemical promotion. The complete oxidation of ethylene was investigated as a model reaction in the temperature range 290-360 °C and atmospheric total pressure. The rate of C2H4 oxidation can be reversibly enhanced by up to 45% by supplying O2− to the catalyst via positive current application. The steady-state rate change is typically 103-104 times larger than the steady-state rate I/2F of electrochemical supply or removal of promoting oxide ions. The observed behaviour is discussed on the basis of previous NEMCA studies and the mechanism of the reaction. Kluwer Academic Publishers, 2000 electrochemical promotion nationallicence ethylene oxidation nationallicence NEMCA effect nationallicence palladium nationallicence Yiokari K. Department of Chemical Engineering, University of Patras, GR-26500, Patras, Greece aut Bebelis S. Department of Chemical Engineering, University of Patras, GR-26500, Patras, Greece aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/11(2000-11-01), 1277-1283 0021-891X 30:11<1277 2000 30 10800 https://doi.org/10.1023/A:1026597411612 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1026597411612 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yiokari K. Department of Chemical Engineering, University of Patras, GR-26500, Patras, Greece aut NATIONALLICENCE 700 1- Bebelis S. Department of Chemical Engineering, University of Patras, GR-26500, Patras, Greece aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/11(2000-11-01), 1277-1283 0021-891X 30:11<1277 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer