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Electrochemical Activation of Catalysis - Promotion, Electrochemical Promotion, and Metal-Support Interactions (Hardcover, 2001 ed.)
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Electrochemical Activation of Catalysis - Promotion, Electrochemical Promotion, and Metal-Support Interactions (Hardcover, 2001 ed.)
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I knew nothing of the work of C. G. Vayenas on NEMCA until the
early nineties. Then I learned from a paper of his idea (gas
interface reactions could be catalyzed electrochemically), which
seemed quite marvelous; but I did not understand how it worked.
Consequently, I decided to correspond with Professor Vayenas in
Patras, Greece, to reach a better understanding of this concept. I
think that my early papers (1946, 1947, and 1957), on the
relationship between the work function of metal surfaces and
electron transfer reactions thereat to particles in solution, held
me in good stead to be receptive to what Vayenas told me. As the
electrode potential changes, so of course, does the work function
at the interface, and gas metal reactions there involve adsorbed
particles which have bonding to the surface. Whether electron
transfer is complete in such a case, or whether the effect is on
the desorption of radicals, the work function determines the
strength of their bonding, and if one varies the work function by
varying the electrode potential, one can vary the reaction rate at
the interface. I got the idea. After that, it has been smooth
sailing. Dr. Vayenas wrote a seminal article in Modern Aspects of
Electrochemistry, Number 29, and brought the field into the public
eye. It has since grown and its usefulness in chemical catalytic
reactions has been demonstrated and verified worldwide.
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