LIGHT ALKANE CHROMIUM-BASED DEHYDROGENATION CATALYST, AND PREPARATION METHOD AND APPLICATION THEREOF

원문 (중국어)

The present invention discloses a light alkane chromium-based dehydrogenation catalyst, and a preparation method and application thereof, and belongs to the field of petrochemical technology. The dehydrogenation catalyst has a spinel structure and comprises the following components in mass fractions based on the total weight on a dry basis: 0.1-35% of chromium oxide, 0.1-5% of a first promoter, 0.1-10% of a second promoter, 0.1-5% of a third promoter, and the balance being a fluidized bed carrier. This dehydrogenation catalyst controls the existence state of the active centers in the catalyst by adjusting the electrical properties of the surface of the carrier, resulting in higher dehydrogenation activity and propylene selectivity of the catalyst; at the same time, it enhances the overall stability, strength, and attrition of the catalyst, alleviating the loss problem of the catalyst during use.