Electrocatalysis by foreign metal monolayers: Oxidation of formic acid on platinum
Abstract
It was demonstrated that some foreign metal monolayers formed by underpotential deposition have pronounced catalytic effects on the oxidation of formic acid on platinum. The explanation of these effects was sought within the framewor of existing data on the formic acid oxidation and the underpotential deposition. It was found that the catalytic effect of foreign metal monolayers originates in the decrease of hydrogen adsorption thus preventing the formation of the main poisoning species COH. At the same time these experiments confirm the previously postulated mechanism of formation of the poisoning species involving adsorbed hydrogen.
Keywords:
foreign metal monolayers / underpotential deposition / catalytic effect / formic acid / platinum / hydrogen adsorption / poisoning / adsorbed hydrogenSource:
Journal of Electroanalytical Chemistry, 1975, 65, 2, 587-601Publisher:
- Elsevier
Projects:
- Funds for Research of the Republic of Serbia and of the Serbian Academy of Science and Arts
DOI: 10.1016/0368-1874(75)85146-X