The effect of alkali metals doping on properties of Cu/ZnO/Al2O3 catalyst for water gas shift

The following contribution shows the results of investigations on an influence of alkali metals compounds on physicochemical and catalytic properties as well as the most important operating parameters of Cu/ZnO/Al2O3 system, with a composition being similar to typical industrial heterogeneous catalysts for LT-WGS process. The addition of cesium or potassium to the Cu/ZnO/Al2O3 catalyst causes a decrease of copper surface. It gives remarkable inhibition of methanol synthesis, accompanying by a relatively small influence on the activity towards WGS.