Catalyst for ethylbenzene dehydrogenation in low steam to ethylbenzene ratio, preparation method and application thereof
A technology of ethylbenzene dehydrogenation and catalyst, which is applied in the direction of catalysts, carbon compound catalysts, chemical instruments and methods, etc., can solve the problems of poor stability of catalysts, achieve the effects of improving stability, enhancing stability, and enhancing self-regeneration ability
Active Publication Date: 2020-01-14
CHINA PETROLEUM & CHEM CORP +1
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Abstract
The invention relates to a catalyst for ethylbenzene dehydrogenation in low steam to ethylbenzene ratio, a preparation method and application thereof. The problems that potassium in the existing catalyst in the prior art is prone to migrating and being washed away during the reaction of preparing styrene with ethylbenzene dehydrogenation, and the catalyst has poor stability are mainly solved. By adopting the technical scheme that the catalyst for ethylbenzene dehydrogenation in low steam to ethylbenzene ratio is prepared from the following components in percentage by weight: 66 to 76% of Fe2O3, 4 to 9% of K2O, 4 to 7% of K2ZnO2, 6 to 12% of CeO2, 0.5 to 4.5% of WO3, 0.5 to 4.5% of MgO, 0.5 to 5% of SrO, and 0.5 to 5% of heavy rare earth oxide, the heavy rare earth oxide is selected from one or more of Eu2O3, Gd2O3 or Tb2O3, 0.05 to 3% of the oxide is selected from Ge or Pb, and the catalyst for ethylbenzene dehydrogenation in low steam to ethylbenzene ratio can be used in the industrial production of styrene preparation from ethylbenzene dehydrogenation under the condition of low steam to ethylbenzene ratio.
Application Domain
Heterogenous catalyst chemical elementsCatalysts +6
Technology Topic
OxideStyrene +6
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