V/Zr-MOF catalyst for preparing phenol from benzene through direct hydroxylation and preparation method of V/Zr-MOF catalyst

Abstract

The invention provides a V / Zr-MOF catalyst for preparing phenol from benzene through direct hydroxylation and a preparation method of the V / Zr-MOF catalyst. Vanadium(IV)oxy acetylacetonate (VO(acac)2)is used as an active center; an organic metal framework Zr-MOF(UiO-66-NH2) is used as a catalyst carrier; the vanadium-zirconium compounded heterogeneous catalyst is prepared by a one-step method, wherein the active ingredient of vanadium(IV)oxy acetylacetonate is loaded onto the Zr-MOF through C=N double bonds, so that the vanadium-zirconium catalyst is obtained. The preparation process of the catalyst in the process of preparing phenol from benzene through direct hydroxylation is simplified; the stability of the catalyst is improved; the prepared catalyst shows good activity and high selectivity in the reaction; the yield of the reaction for preparing phenol from benzene is improved.

Description

technical field [0001] The invention belongs to the technical field of hydrothermal synthesis and energy chemical industry, and specifically relates to a V / Zr-MOF catalyst used for the direct hydroxylation of benzene to prepare phenol and a preparation method thereof. Background technique [0002] Phenol is an important chemical intermediate and petrochemical basic raw material. 90% of phenol is used in the synthesis of phenolic resin. It is also used in medicine, pesticides, paints, dyes, explosives, petroleum additives, paint removers, and wood preservatives. , spices and other synthetic fields play an important role. At present, the method of producing phenol in most factories is mainly the cumene method, which has the following four shortcomings: ① three steps are required for the synthesis route, and the reaction process is long; ② the utilization rate of atoms is not high, and it is not environmentally friendly; ③ phenol The purity is higher, but the yield is low (<...

AI Technical Summary

Problems solved by technology

At present, the method of producing phenol in most factories is mainly the cumene method, which has the following four shortcomings: ① three steps are required for the synthesis route, and the reaction process is long; ② the utilization rate of atoms is not high, and it is not environmentally friendly; ③ phenol The purity is higher, but the yield is low (<5%), which cannot achieve the green and sustainable development we are now advocating, and it is difficult to meet the current market demand; ④Acetone is used as a co-product. making the price of phenol more passive

So far, there is no report on the literature of composite bimetallic catalysts that use vanadium as the active site to ensure the catalyst activity and Zr-MOF as the support to ensure the catalyst selectivity.

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