Metal organic framework material-molecular sieve composite material and preparation method thereof

A metal-organic framework and composite material technology, applied in the field of metal-organic framework material-molecular sieve composite material and its preparation, can solve problems such as poor hydrothermal stability, achieve excellent adsorption performance, improve specific surface area, and have wide application prospects. Effect

Active Publication Date: 2018-10-23
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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Problems solved by technology

[0005] In view of the disadvantages of the prior art described above, based on the potential advantages of ZIFs and molecular sieve materials in the field of adsorption separation and catalysis, the object of the present invention is to provide a metal organic framework material-molecular sieve composite material and its preparation method, to Solve the problems of poor hydrothermal stability of ZIFs

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  • Metal organic framework material-molecular sieve composite material and preparation method thereof
  • Metal organic framework material-molecular sieve composite material and preparation method thereof
  • Metal organic framework material-molecular sieve composite material and preparation method thereof

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preparation example Construction

[0043] Such as figure 1 As shown, the present invention provides a kind of preparation method of metal-organic framework material-molecular sieve composite material, and described preparation method comprises: will contain Zn(NO 3 ) 2 or Co(NO 3 ) 2 , and imidazole or imidazole derivatives solution, adding ZSM-22 molecular sieve, stirring at room temperature for hydrothermal reaction to obtain the reactant, filtering, washing, and removing the template agent to prepare the metal organic framework material-molecular sieve composite Material.

[0044] As an example, the metal-organic framework material-molecular sieve composite material has a TON molecular sieve structure and a corresponding structure of a ZIF-8 molecular sieve.

[0045] As an example, the imidazole or imidazole derivatives, ZSM-22 molecular sieve, and Zn(NO 3 ) 2 or Co(NO 3 ) 2 The range of mass ratio is 55.4:1~50:0.5~5. Further, the imidazole or imidazole derivatives, ZSM-22 molecular sieve, and Zn(NO...

Embodiment 1

[0061] Dissolve 55.4g of 2-methylimidazole in 160mL of deionized water (30°C) to obtain the first solution, add 5g of ZSM-22 molecular sieve to the first solution to obtain a suspension, and dissolve 2.3g of zinc nitrate in 16mL of deionized Zinc nitrate solution was obtained in water, and the zinc nitrate solution was slowly added dropwise to the suspension, stirred for 2 hours to obtain a metal-organic framework material-molecular sieve suspension, washed twice with deionized water and then twice with ethanol, at 100°C Drying at the bottom to obtain metal-organic framework material-molecular sieve (ZIF-8 / ZSM-22) composite material.

[0062] attached figure 2 It is the XRD characterization of the metal organic framework material-molecular sieve (ZIF-8 / ZSM-22) composite material of Example 1.

[0063] attached image 3 It is the SEM scanning electron micrograph of Example 1 metal-organic framework material-molecular sieve (ZIF-8 / ZSM-22) composite material.

Embodiment 2

[0065] Dissolve 55.4g of 2-methylimidazole in 150mL of deionized water (30°C) to obtain the first solution, add 10g of ZSM-22 molecular sieve to the first solution to obtain a suspension, and dissolve 0.5g of zinc nitrate in 15mL of deionized Zinc nitrate solution was obtained in water, and the zinc nitrate solution was slowly added dropwise to the suspension, stirred for 4 hours to obtain a metal organic framework material-molecular sieve suspension, and then washed twice with deionized water and then twice with ethanol, at 100 ° C Drying at the bottom to obtain metal-organic framework material-molecular sieve (ZIF-8 / ZSM-22) composite material.

[0066] attached Figure 4 It is the XRD characterization of the metal organic framework material-molecular sieve (ZIF-8 / ZSM-22) composite material of Example 2.

[0067] attached Figure 5 It is the SEM scanning electron micrograph of example 2 metal organic framework material-molecular sieve (ZIF-8 / ZSM-22) composite material.

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Abstract

The invention provides a metal organic framework material-molecular sieve composite material and a preparation method thereof. The preparation method comprises: adding a ZSM-22 molecular sieve to a solution containing Zn(NO3)2 or Co(NO3)2, and imidazole or an imidazole derivative, stirring at a room temperature, carrying out a hydrothermal reaction to obtain a reactant, filtering the reactant, washing, and removing the templating agent to obtain the metal organic framework material-molecular sieve composite material. According to the present invention, the material with high adsorption performance is prepared by compounding the organic framework material with excellent adsorption performance and the ZSM-22 molecular sieve, wherein the specific surface area and the microporous structure ofZSM-22 can be substantially improved through the compounding of ZIF-8, and the high hydrothermal stability of the silicon-aluminum molecular sieve can be combined; and the product has the excellent adsorption performance of the organic framework material, and can be widely used in the fields of medicine, chemical industry, environmental protection and the like.

Description

technical field [0001] The invention relates to a material chemistry field, in particular to a metal organic framework material-molecular sieve composite material and a preparation method thereof. Background technique [0002] Due to its unique pore structure, high specific surface area, and outstanding hydrothermal stability, molecular sieves are widely used in many fields such as petrochemical industry, gas separation, and pollutant treatment. Among them, ZSM-22 molecular sieve with TON structure has been widely studied and applied in the hydroisomerization reaction of oil products due to its unique one-dimensional pores. The unit cell parameters of ZSM-22 are Each unit cell contains 24 central atoms, and the TON topology, the skeleton is composed of five-membered rings, six-membered rings and ten-membered ring structures, and the one-dimensional channel composed of ten-membered rings is parallel to the [001] direction, as oval-shaped channel. Organic framework molecu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01J29/70B01J29/76
CPCB01J20/226B01J29/7088B01J29/7676
Inventor 刘子玉吴晛陈新庆丘明煌于幸孙予罕
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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