Реферат: An original approach was developed for characterization of operating catalysts by EPR. Weak electronacceptor sites present on the catalyst surface during 1-chlorobutane dehydrochlorination over nanocrystalline MgO, Al2O3 and ZrO2 samples were characterized by EPR using perylene as a spin probe. It is demonstrated that electron-acceptor sites can exist on the surface of operating catalysts. It is shown that the concentration of weak elector-acceptor sites correlates with the catalytic activity. The obtained results indicate that weak electron-acceptor sites tested using perylene may be the active sites accounting for 1-chlorobutane dehydrochlorination in the active state of the catalysts. The developed method can be used to monitor changes in the concentration of electron-acceptor sites as well other types of active sites that can be characterized by EPR using appropriate spin probes on the catalyst surface during any catalytic reaction.

Библиографическая ссылка: Bedilo A.F. , Shuvarakova E.I. , Chesnokov V.V. , Kenzin R.M.
EPR Characterization of Active Sites on the Surface of Operating Catalysts
В сборнике 13th European Congress on Catalysis. 2017. – C.116-117.

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