Application of From Structural Analysis to in-situ Characterization by Infrared Spectroscopy in the Research of Petroleum Refining and Chemical Catalysts
Most petrochemical technologies are catalytic processes,and the catalysts used are dominated by various molecular sieves,oxides,and metal supported oxides or molecular sieves.Further,infrared spectroscopy is widely applied in the structural characterization of these catalytic materials.The paper mainly introduces the principle of infrared spectroscopy and the development of instrument accessories and experimental technology,and also summarizes the application and progress of infrared spectroscopy and in situ technology in the field of petrochemical industry.With the rapid development of in situ reaction cells and experimental techniques in recent years,it is possible not only to directly obtain the bulk skeleton structure and heteroatom bonding state,but also to acquire the information involving OH groups on the surface of catalysts,the structural distribution of different metal active centers,and the adsorption selectivity of surface reactants through in situ or operando characterization of probe molecules or reaction molecules,and even to capture information such as the structure of activated intermediates and products.On this basis,further research was performed on the structure activity analysis and reaction mechanism of catalytic materials.The support and forward-looking role of infrared spectroscopy in the industrial upgrading of petrochemical industry and the low-carbon and green development are also illustrated through application cases in the actual R&D of industrial agents.
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