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A kind of normal temperature aqueous phase synthesis method of zeolite imidazolate framework material

A zeolite imidazolate and framework material technology, applied in the direction of cobalt organic compounds, zinc organic compounds, etc., can solve the problems of solvents and by-products, high synthesis temperature, low reaction yield, etc., and achieve high reaction yield and good crystallinity. , the effect of high purity

Inactive Publication Date: 2016-01-20
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems and deficiencies such as high cost, low reaction yield, high synthesis temperature, especially solvent and by-products existing in the prior art, and provide a normal temperature aqueous phase synthesis method of zeolite imidazolate framework material, The invention can rapidly prepare the zeolite imidazolate framework material

Method used

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  • A kind of normal temperature aqueous phase synthesis method of zeolite imidazolate framework material
  • A kind of normal temperature aqueous phase synthesis method of zeolite imidazolate framework material
  • A kind of normal temperature aqueous phase synthesis method of zeolite imidazolate framework material

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Embodiment 1

[0030] Efficient preparation at room temperature of Example 1Zn framework material

[0031] Into the 250mL beaker, add 1.362gZnCl 2 , 1.64g of 2-methylimidazole, add 100mL of water, 5g of 28%-30% ammonia solution, 0.1g of non-ionic surfactant L64 and 10mL of absolute ethanol solution and stir evenly for ten minutes, then filter and separate, dry at 80°C for 12hr, and get Metal imidazole coordination framework materials. Its X-ray diffraction pattern is shown in figure 1 , according to the comparison of literature (Science, 2008, 319, 939), it can be known that this material corresponds to the Zif-8 sodalite (sod) topology. its microscopic appearance figure 2 Scanning electron micrograph, for nano-sized particles. The nitrogen adsorption isotherm diagram is shown in image 3 , it can be known that it is a microporous material with a BET specific surface area of ​​1030m 2 / g, pore volume 0.51cm 3 / g.

Embodiment 2

[0032] Efficient preparation at room temperature of embodiment 2Zn framework material

[0033] In a suitable capacity beaker, add 21.9g Zn(Ac) 2 and 250mL water, add 16.4g 2-methylimidazole, 250mL water, 50g 28%-30% ammonia solution, 2.5g nonionic surfactant F127 into another beaker, stir evenly for 20 minutes, filter and separate, and dry at 60°C After 24 hours, the metal imidazole coordination framework material was obtained. Its X-ray diffraction pattern is shown in image 3 , according to the comparison of literature (Science, 2008, 319, 939), it can be known that this material corresponds to the Zif-8 sodalite (sod) topology. its microscopic appearance Figure 4 Scanning electron micrograph, for nano-sized particles.

Embodiment 3

[0034] Efficient preparation at room temperature of embodiment 3Zn framework material

[0035] In a suitable capacity beaker, add 29.7g Zn (NO 3 ) 2 , 500mL water and 12g non-ionic surfactant P123, add 23.6g benzimidazole, 500mL water, 200g 28%-30% ammonia solution and 200mL anhydrous methanol solution into another beaker, stir evenly for 30 minutes, filter and separate, Dry at 90°C for 12 hours to obtain a metal imidazole coordination framework material. Its X-ray diffraction pattern is shown in Figure 5 , according to the comparison of literature (Science, 2008, 319, 939), it can be seen that this material corresponds to the Zif-67 sodalite (sod) topology. its microscopic appearance Figure 6 Scanning electron micrograph, for nano-sized particles.

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Abstract

The invention discloses a room temperature water-phase synthesis method for zeolite imidazole ester framework material, which has the advantages of being low in cost, high in reaction yield, mild in reaction conditions, low in price of raw materials, easy in obtaining of the raw materials as well as simple and clean in technology, and can be used for rapidly preparing the zeolite imidazole ester framework material. The room temperature water-phase synthesis method for the zeolite imidazole ester framework material comprises the following steps of: evenly mixing imidazole ligand and metal compound according to the chemical formula stoichiometric ratio of target coordination framework material with alkaline aqueous solution containing three-block non-ionic surface active agent at the room temperature, filtering or carrying out centrifugal separation, and drying to obtain the zeolite imidazole ester framework material.

Description

technical field [0001] The invention relates to a preparation method of a skeleton material, more specifically to a normal temperature water phase synthesis method of a zeolite imidazolate skeleton material. Background technique [0002] Zeolite imidazolate coordination framework materials are a kind of special metal-organic frameworks (metal-organic frameworks, MOFs) with imidazole or its derivatives as ligands. gas. Modifying or modifying the ligands of this material can greatly improve its adsorption function and selectivity, and effectively solve the greenhouse effect and environmental problems. Relevant domestic researchers have also carried out related work very early, calling such materials Metal Azolate Framework (MAFs for short), and proposed many methods and rules to guide the synthesis of novel or specific structure complexes [Angew .Chem.Int.Ed.2006,45,1557]. The Yaghi research group in the United States systematically synthesized and named this zeolitic imida...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/06C07F15/06
Inventor 何明姚建峰
Owner NANJING FORESTRY UNIV
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