Dehydrogenation catalysts, their preparation methods and applications, and methods for the dehydrogenation of ethylbenzene to styrene.

Abstract

This invention relates to the field of dehydrogenation catalysis technology, specifically to a dehydrogenation catalyst, its preparation method, and its application, and a method for the dehydrogenation of ethylbenzene to styrene. The catalyst comprises the following components based on the total weight of the catalyst: cryptomonescan oxide, with a content of 4.2 wt%-8.5 wt%; Fe₂O₃, with a content of 56 wt%-72 wt%; K₂O, with a content of 5.6 wt%-10 wt%; CeO₂, with a content of 6 wt%-11 wt%; Group VIB metal oxides, with a content of 2 wt%-6.5 wt%; Group VIII metal oxides, with a content of 2 wt%-4.4 wt%; Group IIIB, IVB, and / or VB metal oxides, with a content of 1.8 wt%-3.2 wt%; and alkaline earth metal oxides, with a CaO content of 0.3 wt%-1.2 wt%. The dehydrogenation catalyst of this invention, when applied to the dehydrogenation of alkylbenzene (ethylbenzene) to alkenylbenzene (e.g., styrene), exhibits high catalytic activity, good stability, and resistance to deactivation.

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