Pulse dynamic measurements of oxygen chemisorption on sulphided Co-Mo/Al2O3 catalyst – Effect of experimental conditions

Abstract

The effect of temperature and time regime of individual steps of the methodic procedure (i.e. catalyst drying, sulphidation, purification of the sulphided surface by inert gas, and chemisorption) on pulse dynamic measurements of oxygen chemisorption of commercial sulphided Co-Mo/Al2O3 catalyst have been studied. The strongest effect was exerted by the chemisorption temperature and by the temperature and time of purification of the surface of sulphided catalyst. Optimum experimental conditions for testing catalysts of this type by the described chemisorption method are proposed.