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Meso-microporous metal-organic compound and preparation method thereof

A technology of organic compounds and metal-inorganic salts, which is applied in the field of mesoporous metal-organic compounds and their preparation, achieving the effects of low cost, simple synthesis process and wide application prospects

Inactive Publication Date: 2009-01-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there have been no related reports on metal-organic compounds with meso-microporous and hierarchical pore distribution.

Method used

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  • Meso-microporous metal-organic compound and preparation method thereof
  • Meso-microporous metal-organic compound and preparation method thereof
  • Meso-microporous metal-organic compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Weigh 0.53g of chromium chloride and 0.50g of terephthalic acid and dissolve them in 20ml of N,N-dimethylformamide, stir them with magnetic force to fully dissolve them, then transfer the mixed solution into 30ml of stainless steel lined with polytetrafluoroethylene The reactor was crystallized in a synthesis oven at 190°C for 3 days, and cooled naturally to room temperature.

[0024] 2. Suction filter the product, wash with N,N-dimethylformamide, dry at 50°C, and finally roast at 250°C for 6 hours to obtain the target product.

[0025] 3. Low-temperature nitrogen isothermal adsorption performance test: the treatment conditions are 110°C degassing for 8 hours, and the temperature is raised to 200°C for 8 hours. The test condition is 77K, nitrogen isothermal adsorption.

Embodiment 2

[0027] 1. Weigh 0.75g of aluminum nitrate and 0.50g of terephthalic acid and dissolve them in 20ml of N,N-dimethylformamide, stir them with magnetic force to fully dissolve them, then transfer the mixed solution into 30ml of stainless steel lined with polytetrafluoroethylene for reaction crystallized in a synthesis oven at 190°C for 3 days, and cooled naturally to room temperature.

[0028] 2. Suction filter the product, wash with N,N-dimethylformamide, dry at 50°C, and finally roast at 350°C for 6 hours to obtain the target product.

[0029] 3. Low-temperature nitrogen isothermal adsorption performance test: The treatment conditions are 110°C degassing for 8 hours, and the temperature is raised to 300°C for 8 hours. The test condition is 77K, nitrogen isothermal adsorption.

Embodiment 3

[0031] 1. Weigh 0.75g of aluminum nitrate and 0.50g of isophthalic acid and dissolve in 20ml of N,N-dimethylformamide and 1.4-dioxane mixed solution (1:1), magnetically stir to make it fully dissolved, Then the mixed solution was transferred into a 30ml polytetrafluoroethylene-lined stainless steel reactor, crystallized in a synthesis oven at 190°C for 3 days, and cooled naturally to room temperature.

[0032] 2. Suction filter the product, wash it with N,N-dimethylformamide, dry it at 50°C, and finally roast it at 300°C for 6 hours to obtain the target product.

[0033] 3. Low-temperature nitrogen isothermal adsorption performance test: the treatment conditions are 110°C degassing for 8 hours, and the temperature is raised to 250°C for 8 hours. The test condition is 77K, nitrogen isothermal adsorption.

[0034] Table 1 shows the channel structure parameters of the microporous samples in specific examples 1-3 of the present invention.

[0035]

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Abstract

The invention relates to a microporous and mesoporous organometallic compound as well as the preparation method thereof, and mainly provides an organometallic compound with multilevel pores, as well as the preparation method thereof. The preparation method comprises the following steps: metal inorganic salts and organic carboxylic acid coordination polymers are dissolved in water or an organic solvent; the mixed solution is crystallized for 10-100 hours under the condition that the temperature is 100-220 DEG C; after being naturally cooled down and taken out, the reaction product is taken out; the microporous and mesoporous organo-metallic compound is prepared through suction-filtering, washing, drying and baking. The preparation process of the invention is simple, the cost is low, and the microporous and mesoporous organo-metallic compound can be prepared under mild conditions. The prepared material with the multilevel pores has wide application prospect on aspects of adsorption, separation, catalysis, etc.

Description

technical field [0001] The invention relates to a material with hierarchical pore distribution, in particular to a mesoporous metal organic compound and a preparation method thereof. Background technique [0002] Porous metal-organic compound is a crystalline polycrystalline material with regular channel or hole structure, which is composed of metal ions and organic ligands connected to each other through covalent bonds or ionic bonds. The one-dimensional, two-dimensional or three-dimensional space formed by this material has an infinite network structure. Due to its unique pore structure, large specific surface area and selective adsorption of small molecules, its research has been highly valued by researchers from all over the world, and has achieved rapid development in the last ten years. The Yaghi group in the United States and the Férey group in France have achieved impressive results in this field. Porous metal organic compounds such as MOF-117 (H.K.Chae, D.Y.Siberi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/04
Inventor 孙立贤张箭徐芬刘颖雅齐燕妮赵军宁邹勇进
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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