International Journal of Advanced Chemistry Research
2019, Vol. 1, Issue 2
Catalysts of the preparation and industrial importance of catalysis and catalyst deactivation
Sumayyah MA Othman
A catalyst is a substance which increases the rate at which a chemical reaction approaches equilibrium without becoming itself permanently involved,Types of Catalysis (homogeneously catalyzed and Heterogeneous catalysis), Industrial Importance of Catalysis: Catalysts are the workhorses of chemical transformations in the industry. Classification of Catalysts :(Unsupported (Bulk) Catalysts,Supported Catalysts).General Methods of Preparation for Supported Catalyst Systems: (Impregnation, Adsorption from Solution, Chemical Vapour Deposition (CVD), Co-precipitation, Deposition, Regenerability).Catalyst design parameters: (Activity, Stability, Selectivity). Catalyst deactivation: deactivation leads to a shortened catalyst lifetime, and the replacement of an aged catalyst to a new one is determined by the industrial processes for which the catalyst is used.