CATALYST FOR BENZENE HYDROXYLATION-BASED PHENOL PREPARATION AND PREPARATION METHOD THEREOF

摘要

The present invention relates to a catalyst for benzene hydroxylation-based phenol preparation and a preparation method thereof. The catalyst uses a mesoporous material as a carrier. First, a surface of the carrier is modified by using amino silane, second, immersion is performed by using an acetylpyruvate solution of metal, and finally, washing and drying are performed to prepare the catalyst. The advantages of the present invention lie in that, active metal is loaded on the silane-modified mesoporous material to obtain a homogeneous-heterogeneous compound catalyst; an active metal component exists in a reaction system in a homogeneous form, thereby ensuring high catalytic performance of a catalytic component, and through bridging effects of the amino silane, the active metal component is loaded on the carrier, so as to improve acting force between the metal component and the carrier, improve the stability of the catalyst, and facilitate separation of the catalyst and a product. A preparation process of the catalyst is simple, and the catalyst has excellent catalytic performance, and can be applied to a reaction system for benzene hydroxylation-based phenol preparation.