Abstract
Abstract The adsorption of CO and H2 was investigated on a series of Rh/SiO2 and alkali-promoted Rh/SiO2 catalysts using IR spectroscopy and volumetric measurements. The characteristics of the support, the method of preparation, and the type of alkali species all were found to influence the adsorptive properties of the catalysts. Several different types of interactions between Rh, SiO2, and alkali species were postulated, including both geometric and electronic interactions.