Download e-book for iPad: Electrochemical Activation of Catalysis by Costas G. Vayenas, Symeon Bebelis, Costas Pliangos, Susanne

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Extra resources for Electrochemical Activation of Catalysis

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4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. M. Faraday, Experimental Researches in Electricity. § 11. On Electrochemical Decomposition, Philosophical Transactions of the Royal Society, 77-122 (1834). M. G. Vayenas, The effect of Electrochemical Oxygen Pumping on the Rate and Selectivity of Ethylene Oxidation on Polycrystalline Silver, J. Catal. 70, 137146(1981). M. G. Vayenas, The effect of electrochemical oxygen pumping on the Rate and Selectivity of Propylene Oxidation on Silver in a Solid Electrolyte Cell, J.

21) and the initial vs slopes of Fig. 4 one computes alkali initial dipole moments as high as 15 D. g. Al) the vs plots are temperature dependent23 (Fig. 5). g. 100 K) the vs plots are similar to those obtained on transition metal surfaces. g. 350 K, Fig. 6,23 The initial dipole moments are quite high (Fig. 5) but generally smaller than the ones on transition metal surfaces. 6,24,25 2. 21) and the alkali ion radius one can estimate the effective positive charge, q, on the alkali adatom, provided its coordination on the surface is known.

G. plus ) over it. This idea of using the same conductive film as a catalyst and simultaneously as an electrocatalyst led to the discovery of the phenomenon of electrochemical promotion. Promotion: We use the term promotion, or classical promotion, to denote the action of one or more substances, the promoter or promoters, which when added in relatively small quantities to a catalyst, improves the activity, selectivity or useful lifetime of the catalyst. In general a promoter may either augment a desired reaction or suppress an undesired one.

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