Preparation method of heterogeneous catalyst of organic coordination compounds of mesoporous structure metals

Abstract

The invention relates to a preparation method of a heterogeneous catalyst of organic coordination compounds of mesoporous structure metals, belonging to a preparation method of heterogeneous catalysts. Theterogeneous catalyst prepared by the prior art has the defects that the utilization ratio of surface active composition is limited, the direction of catalytic reaction can not be controlled easily, and the activity and the selectivity can not reach the optimal effect. In the invention, the preparation method of the heterogeneous catalyst of organic coordination compounds of mesoporous structure metals comprises the following steps of: mixing zirconium tetrachloride, 1,4-terephthalic acid and N,N-dimethylformamide solvent under the condition of microwaves, and stirring the mixture at room temperature until the solution is clear; adding the solution into a microwave reactor for microwave heating, removing the supernatant solution, and washing the residual solid matters with the N,N-dimethylformamide solvent; and drying the washed matters in a vacuum mode to obtain the heterogeneous catalyst. The invention has the advantages of simple process and easy operation; the prepared heterogeneous catalyst has efficient catalytic activity; and the catalyst can be recycled, thereby reducing the production cost and decreasing the environment pollution.

Description

technical field [0001] The invention relates to a method for preparing a heterogeneous catalyst, in particular to a method for preparing a heterogeneous catalyst of a mesoporous metal organic coordination compound. technical background [0002] Catalyst is an important material in chemical industry production, which plays a decisive role in the benefit of chemical production. According to the form of catalyst in the chemical reaction, it can be divided into heterogeneous catalyst and homogeneous catalyst. Most commercial catalysts in the prior art are heterogeneous catalysts. The advantages of heterogeneous catalysts are that the active components of the catalyst can be widely varied; the temperature range used is wide; the catalyst is easily separated from the product; and it is easy to realize industrialization. But its disadvantages are: 1. It is difficult to design or improve the catalyst. 2. Due to the heterogeneity of the surface, the utilization rate of the surface...

AI Technical Summary

Problems solved by technology

But its shortcoming is: 1, the design or improvement of catalyst is difficult

2. Due to the heterogeneity of the surface, the utilization rate of surface active components is limited

3. The direction of the catalytic reaction is not easy to control, and the activity and selectivity cannot achieve the best effect

This method usually brings some problems such as catalyst instability; uneven distribution of active sites on the support; increased steric hindrance, and changes in the microenvironment of the catalytic active center by ligands, etc.

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