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Abstract
A series of Cr/Na-ZSM-5 catalysts for oxidative dehydrogenation of ethane reaction with different Cr contents from 2.5 wt% to 10.0 wt% were prepared by impregnation method. The analysis and testing techniques, such as XRD, CO2-TPD, H2-TPR and SEM, were used to characterize the physico-chemical properties of the prepared catalysts. The results show that the active component Cr2O3 was well dispersed on the surface of the support Na-ZSM-5. The loading of Cr2O3 has no influence on the structure of support Na-ZSM-5, but it can lead to the agglomeration of the catalyst when Cr content is higher than 5.0 wt%. There is an interaction between the loaded Cr2O3 and support Na-ZSM-5, which can affect the redox properties and result in the changing of the basicity and increasing of the basic sites.