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Preparation method and application of composite material for capturing carbon dioxide

A composite material and carbon dioxide technology, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problems of few hydrophobic carbon dioxide capture materials and affect carbon dioxide adsorption performance, and achieve simple preparation methods and reduce water vapor The effect of good hydrophobic performance

Pending Publication Date: 2022-04-12
SHANXI LUAN MINING GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When conventional carbon dioxide capture materials are used to capture the flue gas after preliminary purification, the water vapor in the flue gas will occupy the adsorption sites of the carbon dioxide capture material, which seriously affects the adsorption performance of the capture material on carbon dioxide
Although a lot of research has been done on carbon dioxide capture materials at home and abroad, and a good carbon dioxide adsorption effect has been achieved under dry gas capture conditions, there are few research reports on the preparation of hydrophobic carbon dioxide capture materials.

Method used

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  • Preparation method and application of composite material for capturing carbon dioxide
  • Preparation method and application of composite material for capturing carbon dioxide
  • Preparation method and application of composite material for capturing carbon dioxide

Examples

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preparation example Construction

[0036] see Figure 1~4 , the present invention provides a method for preparing a composite material for carbon dioxide capture, the preparation method is simple, the prepared composite material is porous, and has good hydrophobic properties, and can be used for capturing carbon dioxide in a water vapor environment , reduce the influence of water vapor in the process of capturing carbon dioxide in the flue gas, effectively solve the problem in the prior art that when the flue gas is captured, the water vapor in the flue gas occupies the adsorption site of the carbon dioxide capture material, resulting in a decrease in the adsorption performance of carbon dioxide .

[0037] The invention provides a method for preparing a composite material for carbon dioxide capture, the method for preparing the composite material comprises the following steps:

[0038] S1. Dissolving polyaldehydes and nitrogen-containing heterocyclic compounds in glacial acetic acid to prepare a mixed solution...

Embodiment 1

[0068] This embodiment provides a method for preparing a composite material for carbon dioxide capture, the method for preparing the composite material includes the following steps:

[0069] S1, terephthalaldehyde and pyrrole are dissolved in glacial acetic acid, are mixed with the ethyl acetate mixed solution containing the terephthalaldehyde of 0.1mol / L and the pyrrole containing 0.1mol / L;

[0070] S2. Stir the ethyl acetate mixed solution under nitrogen for 0.5 h, then add ferric chloride and continue stirring for 4 h to obtain an organic polymer precursor solution, which is placed in a hydrothermal reaction kettle, and heated at 180° C. for 72 h, Obtain organic polymer reaction solution; Wherein, the ratio between iron trichloride (mol) and glacial acetic acid (L) is 0.05mol / L;

[0071] S3. After cooling the organic polymer reaction liquid naturally, washing it with deionized water, methanol, acetone, tetrahydrofuran and chloroform in sequence, and placing it in a vacuum d...

Embodiment 2

[0076] This embodiment provides a method for preparing a composite material for carbon dioxide capture. The difference between the preparation method of this composite material and Example 1 is that in step S1, it is formulated to contain 0.2 mol / L terephthalaldehyde and 0.2 mol / L / L pyrrole ethyl acetate mixed solution; the protective gas in step S2 is argon; other methods and steps are the same as those in Example 1, and will not be repeated here.

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Abstract

The invention provides a preparation method and application of a composite material for capturing carbon dioxide. The preparation method comprises the following steps: S1, preparing a glacial acetic acid mixed solution containing polyaldehyde and a nitrogen-containing heterocyclic compound; s2, stirring the mixed solution at room temperature under shielding gas, adding ferric trichloride, continuously stirring to obtain an organic polymer precursor solution, putting the organic polymer precursor solution into a hydrothermal reaction kettle, and heating for reaction to obtain an organic polymer reaction solution; s3, cooling the organic polymer reaction liquid, washing and drying to obtain an organic polymer; s4, preparing an ethyl acetate mixed solution containing divinylbenzene and azodiisobutyronitrile; and S5, grinding the organic polymer, putting the ground organic polymer into a hydrothermal reaction kettle, adding the ethyl acetate mixed solution, carrying out heating reaction, taking out, cooling and drying to obtain the composite material. The prepared composite material has good hydrophobic performance, is used for capturing carbon dioxide in a water vapor environment, and reduces the influence on water vapor in the process of capturing carbon dioxide in flue gas.

Description

technical field [0001] The invention belongs to the field of carbon dioxide capture materials, in particular to a preparation method and application of a composite material for carbon dioxide capture. Background technique [0002] my country has now become the world's largest carbon dioxide emitter. Its unique resource endowment of "more coal, less oil, lack of gas, and depleted uranium" determines that it is difficult to achieve social and economic development and carbon dioxide emission reduction at the same time only by adjusting energy consumption and industrial structure. dual goals. As an important source of carbon dioxide emissions, the coal chemical process urgently needs to carry out research and development of new technologies for carbon dioxide recovery and resource utilization, so as to drive the energy saving, consumption reduction, transformation and upgrading of the traditional high-carbon industry of coal chemical industry, and create new opportunities for rel...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01D53/02B01J20/30
CPCY02C20/40
Inventor 孙楠楠王大力胡登王东飞范跃强魏伟张敏
Owner SHANXI LUAN MINING GRP
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