CATALYSTS FOR THE SELECTIVE OXIDATION OF CARBON MONOXIDE IN HYDROGEN-CONTAINING GASES

摘要

The invention relates to a method for the selective catalytic oxidation of carbonmonoxide (CO) in H2-rich, CO2- and H2-containing gases in the presence of a noble metal catalyst on an alumina carrier with the addition of air as oxidising agent. According to the invention, with this method .alpha.-A12O3 is used as carrier material. The specific surface area of the .alpha.-A12O3 carrier can be less than 25 m2/gram. The noble metal can be ruthenium or platinum and preferably a combination of ruthenium (Ru) and platinum (Pt), t he sum of the quantities of RU and Pt being less than or equal to 1.0 % (m/m).< /SDOAB>