Mechanism of carbon monoxide oxidation on supported copper catalysts modified with cerium and platinum (original) (raw)

The mechanism of CO oxidation on copper oxide catalysts without additives and with cerium and platinum additives supported on γ Al 2 O 3 was studied. It was found that the presence of Ce and Pt facilitated the reduction of copper and increased the activity of the catalysts. It was established that the parent substances participated in the reaction from an adsorbed state; in this case, the surface coverage of all of the catalysts with oxygen was greater than the coverage with CO, and the reaction system components exhibited different adsorption capacity. The introduction of Ce increases the bond strength of CO with the surface and weakens the bond of oxygen with the surface. The presence of Pt increases the bond strengths of CO, O 2 , and CO 2 with the surface.