an excellent co 2 Ultramicroporous covalent triazine framework material with adsorption and separation properties and preparation method

A covalent triazine skeleton and ultra-microporous technology, which is applied in the field of preparation of nanoporous materials, can solve the problems of poor selectivity of adsorbents, and achieve the effects of high selectivity, cheap raw materials, and high specific surface area

Active Publication Date: 2018-02-13
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to effectively obtain ultra-microporous framework materials and solve the existing CO 2 The problem of poor selectivity of the adsorbent, the present invention uses the strategy of reducing the size of the monomer to design and synthesize a kind with excellent CO 2 Ultramicroporous covalent triazine framework materials with adsorption and separation properties

Method used

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  • an excellent co <sub>2</sub> Ultramicroporous covalent triazine framework material with adsorption and separation properties and preparation method
  • an excellent co <sub>2</sub> Ultramicroporous covalent triazine framework material with adsorption and separation properties and preparation method
  • an excellent co <sub>2</sub> Ultramicroporous covalent triazine framework material with adsorption and separation properties and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1 Preparation of covalent triazine framework material

[0029] Mix 0.6g (7.7mmol) monomer fumaronitrile and 2.1g (15.4mmol) zinc chloride evenly, put into an ampoule, and vacuum seal. Heat in a tube furnace at 10°C / min to 350°C and hold at this temperature for 40h, then cool to room temperature. The obtained product was ground, washed with water and dilute hydrochloric acid to remove metal salts, washed with water and methanol three times, and dried under vacuum at 150°C to obtain a black solid.

Embodiment 2

[0030] Example 2 Preparation of covalent triazine framework material

[0031] Mix 0.6g (7.7mmol) monomer fumaronitrile and 2.1g (15.4mmol) zinc chloride evenly, put into an ampoule, and vacuum seal. Heated in a tube furnace at 10 °C / min to 400 °C and held at this temperature for 40 h, then cooled to room temperature. The obtained product was ground, washed with water and dilute hydrochloric acid to remove metal salts, washed with water and methanol three times, and dried under vacuum at 150°C to obtain a black solid.

Embodiment 3

[0032] Example 3 Preparation of covalent triazine framework material

[0033] Mix 0.6g (7.7mmol) monomer fumaronitrile and 2.1g (15.4mmol) zinc chloride evenly, put into an ampoule, and vacuum seal. Heat in a tube furnace at 10 °C / min to 600 °C and hold at this temperature for 40 h, then cool to room temperature. The obtained product was ground, washed with water and dilute hydrochloric acid to remove metal salts, washed with water and methanol three times, and dried under vacuum at 150°C to obtain a black solid.

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Abstract

The invention relates to a super-microporous covalent triazine skeletal material with excellent CO2 adsorption and separation performance and a preparation method. The covalent triazine skeletal material is a porous skeletal material polymerized from an organic monomer through a covalent bond under the action of a catalyst zinc chloride. The covalent triazine skeletal material has a specific surface area of 100-3000m<2> / g, a pore diameter of 4-50angstrom, and a pore volume of 0.05-0.5cm<3> / g. The preparation method includes: mixing the organic monomer fumaronitrile with zinc chloride evenly, loading the mixture into an ampoule bottle, conducting vacuum pumping and sealing; and polymerizing the mixture in a tube furnace at certain temperature into the super-microporous covalent triazine skeletal material with excellent CO2 adsorption and separation performance. The material not only has high stability, but also has very high CO2 adsorption capacity, separation selectivity and good reproducibility.

Description

technical field [0001] The invention belongs to the field of preparation of nanoporous materials, in particular to a 2 Design and synthesis of ultramicroporous covalent triazine framework materials with adsorption and separation properties. Background technique [0002] Extensive use of fossil fuels releases large amounts of CO 2 Exhaust gas, making its content in the atmosphere increase year by year, causing global warming and increasing the risk of environmental degradation. The world is currently facing the urgent task of reducing greenhouse gas emissions. Countries are scrambling to develop CO 2 While recycling and utilizing technology, new technologies and industries are also emerging. [0003] Coal-fired power plants are CO 2 concentrated sources of emissions, approximately 40% of global CO 2 Emissions from flue gas (CO 2 / N 2 mixture). On the other hand, as a new type of energy, biomethane has the characteristics of cleanness, high efficiency, safety and rege...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCY02C20/40
Inventor 仲崇立王可可黄宏亮
Owner BEIJING UNIV OF CHEM TECH
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