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Framework material for adsorption and separation of CO2 and preparation method of framework material

A framework material, carbon dioxide technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of poor selectivity of adsorbents, and achieve the effects of high selectivity, good application prospects, and cheap preparation of raw materials

Inactive Publication Date: 2017-01-04
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that CO in the prior art 2 The problem of poor selectivity of adsorbents, and then provide a CO 2 Benzothiophene-based covalent triazine framework materials with good selectivity for adsorption and separation

Method used

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  • Framework material for adsorption and separation of CO2 and preparation method of framework material
  • Framework material for adsorption and separation of CO2 and preparation method of framework material
  • Framework material for adsorption and separation of CO2 and preparation method of framework material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The framework material used for carbon dioxide adsorption and separation prepared in this example is a covalent triazine framework material based on benzothiophene.

[0034] Its preparation method is as follows: zinc nitrate and 1,3-dicyanobenzothiophene are mixed according to the molar ratio of 1:1, and reacted at a temperature of 200°C for 0.5h to obtain the product.

[0035] It has been determined that the specific surface area of ​​the framework material prepared in this example is 100-1000 m 2 / g, the pore volume is 0.05~0.6cm 3 / g, the microporosity is 0.5-0.9.

Embodiment 2

[0037] The framework material used for carbon dioxide adsorption and separation prepared in this example is a covalent triazine framework material based on benzothiophene.

[0038] Its preparation method is as follows:

[0039] (1) Using the solution mixed with zinc nitrate and zinc sulfate according to the volume ratio of 1:3 as the catalyst, the catalyst of this embodiment and 1,3-dicyanobenzothiophene are mixed according to the molar ratio of 1:1, and the state, heated to 600°C, and reacted for 0.5h to obtain a black solid;

[0040] (2) Grinding the black solid obtained in step (1), and then washing with water, hydrochloric acid solution and methanol solution respectively, to obtain final product.

[0041] It has been determined that the specific surface area of ​​the framework material prepared in this example is 100-1000 m 2 / g, the pore volume is 0.05~0.6cm 3 / g, the microporosity is 0.5-0.9.

Embodiment 3

[0043] The framework material used for carbon dioxide adsorption and separation prepared in this example is a covalent triazine framework material based on benzothiophene.

[0044] Its preparation method is as follows:

[0045] (1) Mix zinc sulfate and 1,3-dicyanobenzothiophene at a molar ratio of 1:3, heat to 400°C under vacuum, and react for 10 hours to obtain a black solid;

[0046] (2) Cool the black solid obtained in step (1) to 40° C., grind it, wash it with water and hydrochloric acid solution three times, wash it with water and methanol solution once, and dry it.

[0047] It has been determined that the specific surface area of ​​the framework material prepared in this example is 100-1000 m 2 / g, the pore volume is 0.05~0.6cm 3 / g, the microporosity is 0.5-0.9.

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Abstract

The invention provides a framework material for adsorption and separation of CO2. The framework material is a covalent triazine framework material based on benzothiophene and is obtained by polymerizing an organic monomer under the action of a catalyst through covalent bonds; for the framework material, the specific surface area is 100-1000 m<2> / g, the pore volume is 0.05-0.6 cm<3> / g, and the microporosity is 0.5-0.9. The framework material has high CO2 adsorbing capacity, high selectivity for N2 and CH4 and better application prospect in gas adsorption and separation and the like.

Description

technical field [0001] The invention belongs to the field of preparation of covalent triazine framework materials, and in particular relates to a framework material for carbon dioxide adsorption and separation and a preparation method thereof. Background technique [0002] Flue gases from coal-based power plants are the main source of CO 2 Concentrated emission sources (mainly CO 2 / N 2 mixture), in recent years, atmospheric CO 2 The continuous increase of the content causes global warming and increases the risk of environmental degradation. At present, countries around the world are facing the urgent task of reducing greenhouse gas emissions, and are scrambling to develop CO 2 Recycling and Utilization Technology. On the other hand, as a new type of energy, biomethane has the characteristics of cleanness, high efficiency, safety, reliability, and regeneration. The high-efficiency conversion of the huge amount of inferior biomass produced every year to produce biomethan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02C10L3/10C08G73/06
CPCB01D53/02B01D2257/504B01J20/262C08G73/0638C10L3/104Y02C20/40Y02P20/151
Inventor 仲崇立王可可黄宏亮
Owner BEIJING UNIV OF CHEM TECH
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