Improvement of Stability of a Cu/ZnO/Al2O3 Catalyst for the CO Shift Reaction

The stability of a Cu/ZnO/Al2O3 catalyst in the CO shift reaction was improved by the addition of a small amount of silica into the catalyst, probably due to the suppression of the crystallization of the metal oxides contained in the catalyst, especially ZnO, which could be caused by the steam in the feed during the reaction.