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Preparation and modification methods of metal-organic frame material Bi-BTC for adsorbing CO2

An organic framework and metal technology, applied in the field of preparation of metal-organic framework material Bi-BTC and its modified products, can solve the problems of liquid ammonia on equipment corrosion, waste of resources, large water vapor consumption, etc., and achieve good industrial application Foreground, solve the effect of low pressure adsorption is small

Active Publication Date: 2014-12-24
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the industry mainly uses liquid ammonia to treat CO 2 Absorption, but liquid ammonia is more corrosive to equipment, CO 2 Many by-products are produced during the absorption process, and a large amount of water vapor is consumed during the regeneration process, resulting in waste of resources

Method used

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  • Preparation and modification methods of metal-organic frame material Bi-BTC for adsorbing CO2

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0030] a. Add 0.81g Bi(NO 3 ) 3 Dissolve in a mixed solution of 50ml absolute ethanol and 20ml ethylene glycol, stir and dissolve to form solution A;

[0031] b. Add 1.05g H 3 Dissolve BTC in 30ml of absolute ethanol, stir and dissolve to form solution B;

[0032] c. At room temperature, add solution B to solution A dropwise, stir, and mix solution A and solution B uniformly to obtain a mixed solution of solution A and solution B;

[0033] d. At 120°C, the mixed solution of solution A and solution B was crystallized for 2 days to obtain a solid product;

[0034] e. The solid product obtained in step d was washed with anhydrous methanol, and then the solid product washed with anhydrous ethanol was placed in a 120° C. drying oven for 12 h to obtain the metal-organic framework material Bi-BTC.

preparation example 2

[0036] a. 2.43g Bi(NO 3 ) 3 Dissolve in a mixed solution of 50ml absolute ethanol and 20ml ethylene glycol, stir and dissolve to form solution A;

[0037] b. Add 1.05g H 3 Dissolve BTC in 30ml of absolute ethanol, stir and dissolve to form solution B;

[0038] c. At room temperature, add solution B to solution A dropwise, stir, and mix solution A and solution B uniformly to obtain a mixed solution of solution A and solution B;

[0039] d. At 120°C, the mixed solution of solution A and solution B was crystallized for 3 days to obtain a solid product;

[0040] e. The solid product obtained in step d was washed with anhydrous methanol, and then the solid product washed with anhydrous ethanol was placed in a 120° C. drying oven for 12 h to obtain the metal-organic framework material Bi-BTC.

preparation example 3

[0042] a. 1.62g Bi(NO 3 ) 3 Dissolve in a mixed solution of 50ml ethanol and 30ml ethylene glycol, stir and dissolve to form solution A;

[0043] b. Add 1.05g H 3 Dissolve BTC in 30ml of absolute ethanol, stir and dissolve to form solution B;

[0044] c. At room temperature, add solution B to solution A dropwise, stir, and mix solution A and solution B uniformly to obtain a mixed solution of solution A and solution B;

[0045] d. At 130°C, the mixed solution of solution A and solution B was crystallized for 2 days to obtain a solid product;

[0046] e. Wash the solid product obtained in step d with absolute ethanol, and then place the solid product washed with absolute ethanol in a 120° C. drying oven for 12 hours to obtain the metal-organic framework material Bi-BTC.

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Abstract

The invention provides a preparation method of a metal-organic frame material Bi-BTC for adsorbing CO2. The preparation method comprises steps as follows: dissolving Bi(NO3)3*5H2O in an absolute ethyl alcohol and ethylene glycol mixed solution or an ethylene glycol and glycerin mixed solution to form a solution A; dissolving 1,3,5-benzenetricarboxylic acid in absolute ethyl alcohol or N-N-dimethylformamide to form a solution B; slowly adding the solution B into the solution A at the room temperature to obtain a first mixed solution, crystalizing the first mixed solution at the temperature of 120-130 DEG C for 2-3 days to obtain a first solid product, washing the first product with an alcoholic solution, and placing the washed first solid product in a drying oven at the temperature of 110-130 DEG C for 10-16 h to obtain the metal-organic frame material Bi-BTC. The material has the better CO2 adsorbing capacity in a lower-temperature lower-CO2-pressure environment.

Description

【Technical field】 [0001] The present invention relates to CO 2 Adsorption materials, specifically related to a kind of high-efficiency adsorption of CO in a lower temperature and lower pressure environment 2 The preparation method of the metal-organic framework material Bi-BTC and its modification. 【Background technique】 [0002] carbon dioxide (CO 2 ) is currently the most important greenhouse gas in the world, and it is also the cheapest and most abundant resource in the C1 family, so it is used in various fields, such as CO 2 It is used as fire extinguishing agent, food preservation agent, oil field injection agent and important industrial production raw material. Therefore CO 2 Separation and capture has become the focus of various countries, and the development of efficient CO 2 Separation and capture technology is the key. [0003] CO 2 Separation and capture mainly through CO 2 absorption or CO 2 Adsorption was performed in two ways. At present, the industry...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01D53/02
CPCB01D53/02B01J20/22B01J20/30C07F9/94Y02C20/40Y02P20/151
Inventor 尹双凤杨泛明刘英陈浪
Owner HUNAN UNIV
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