Application of Chemisorption Methods in the Research of Petroleum Refining and Chemical Catalysts
As an important method for characterization of physico-chemical properties,chemisorption method has been widely applied in characterizing catalysts.By changing the probing molecules and detection pathways,chemisorption provides information including the number of acidic sites on the surface of catalysts,species of metal oxide,the interaction between multicomponent metal oxides as well as metal oxides and the support,and the degree of metal dispersity in metal supported catalysts.This review introduces the chemisorption methods including ammonia temperature programmed desorption(NH3-TPD),H2 temperature programmed reduction(H2-TPR),static chemisorption,CO pulse adsorption,and oxyhydrogen titration.The underlying principles,advantages,disadvantages,and application range of each method have been illustrated.Then the applications in the characterization of catalysts for petroleum refining and chemical industry are elaborated.Finally,the prospects for the optimization of the methods and their future applications are proposed,aiming to provide insights for the development of advanced chemisorption methods and their applications in petroleum refining and property characterization of chemical catalysts.
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维普
