Preparation method and application of composite material for capturing carbon dioxide

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...

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.

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