The effect of hydrogen sulphide on the adsorption and thermal desorption of carbon monoxide over rhodium catalysts
Abstract
The effect of hydrogen sulphide on carbon monoxide adsorption and vice versa has been studied. Changing the metal precursor has a considerable effect on the energetics of adsorption of both adsorbates. Contrary to what might have been expected, a surface saturated with hydrogen sulphide will still adsorb carbon monoxide and, depending on the metal precursor, carbon monoxide can displace adsorbed hydrogen sulphide. On all the catalysts at least three types of site can be specified by their adsorption behaviour to carbon monoxide and hydrogen sulphide in the presence of the other.