Electrochemical Activation of Catalysis by Costas G. Vayenas, Symeon Bebelis, Costas Pliangos, Susanne

By Costas G. Vayenas, Symeon Bebelis, Costas Pliangos, Susanne Brosda, Demetrios Tsiplakides

This ebook describes the phenomenology, conception and strength purposes of the phenomenon of electrochemical promoting, the place electrochemically caused ion spillover prompts and controls heterogeneous catalysis. The starting place of electrochemical promoting is mentioned in gentle of a plethora of floor spectroscopic and electrochemical innovations. Electrochemical and classical merchandising are in comparison, their universal principles are pointed out and promotional kinetics are conscientiously modeled and in comparison with scan.

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E. before the discovery of electrochemical promotion. Electronegative adatoms cause significant changes in the metal surface electronic structure, manifest as changes in the surface work function. In general electronegative additives increase the work function of the metal substrate. 37 The increase in metal work function induced by electronegative adsorbates (Cl, O, S, P, C) on metal surfaces is at most up to 1 eV and in 2. e. g. alkalis where reaches -3 V as already discussed). Thus the dipole moments of electronegative adatoms are smaller, typically up to 2D.

39. I. A. D. Belyaev, Ethylene hydrogenation in electrochemical cell with solid proton-conducting electrolyte, Reaction Kinetics and Catalysis Letters 41(2), 321-326 (1990). A. A. Sobyanin, The effect of electrochemical oxygen pumping on the rate of CO oxidation on Au electrode-catalyst, Catal. Lett. 13, 61-70 (1992). E. Varkaraki, J. Nicole, E. Plattner, C. G. Vayenas, Electrochemical Promotion of catalyst for the gas phase combustion of ethylene, J. Appl. Electrochem. 25, 978-981 (1995). I. M.

36. 37. 38. 39. I. A. D. Belyaev, Ethylene hydrogenation in electrochemical cell with solid proton-conducting electrolyte, Reaction Kinetics and Catalysis Letters 41(2), 321-326 (1990). A. A. Sobyanin, The effect of electrochemical oxygen pumping on the rate of CO oxidation on Au electrode-catalyst, Catal. Lett. 13, 61-70 (1992). E. Varkaraki, J. Nicole, E. Plattner, C. G. Vayenas, Electrochemical Promotion of catalyst for the gas phase combustion of ethylene, J. Appl. Electrochem. 25, 978-981 (1995).

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