CO-products: DFT calculations are used to construct a mechanism for the electrochemical reduction of CO on Cu(100) that agrees with the experimental observations (see picture) of pH independence in the formation of C2 species. The rate-determining step is an electron-transfer-mediated CO dimerization. Ethylene, acetaldehyde, and ethanol are formed through a common pathway, and adsorbed ethylene oxide is one of the reaction intermediates.
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