Coal asphalt porous polymer prepared through heteropolyacid catalysis as well as preparation method and application thereof

Abstract

The invention provides a coal asphalt porous polymer prepared through heteropolyacid catalysis as well as a preparation method and application thereof, and relates to the coal asphalt porous polymer.The coal asphalt porous polymer prepared through heteropolyacid catalysis is prepared from the following raw materials according to the mass ratio: 1 part of substrate raw material, 3 parts of crosslinking agent and 9.47 parts of catalyst. The solid asphalt is firstly dissolved into purified 1,2-dichloroethane; then, dimethoxymethane is added; after the uniform heating, heteropolyacid subjected toheat treatment is added to obtain a mixed solution; the asphalt porous polymer is prepared; the obtained asphalt porous polymer is firstly cleaned by methanol; cleaning filter liquid is collected; then, products are extracted; after the drying, the coal asphalt porous polymer is obtained. The coal asphalt porous polymer can be applied to adsorption such as gas adsorption and storage. The reactionconditions are mild; the green and environment-friendly effects are achieved; the catalyst can be repeatedly used for many times; the cost is very low. The equipment investment can be greatly reduced; the process technology difficulty is reduced; the process production efficiency is improved.

Description

technical field [0001] The invention relates to a coal tar pitch porous polymer, in particular to a coal tar pitch porous coal tar pitch prepared by heteropolyacid catalysis of a porous polymer with a larger specific surface area by means of a Friedel-Crafts alkylation reaction to crosslink coal tar pitch and dimethoxymethane Polymers and their preparation methods and applications. Background technique [0002] Coal tar pitch refers to the residue after the liquid fraction is removed by distillation in the process of coal tar processing, which is a bulk product. Coal tar pitch is mainly composed of polycyclic and fused-ring aromatic hydrocarbons and their derivatives, such as non-volatile anthracene and pyrene, especially carcinogenic polycyclic aromatic hydrocarbons such as benzopyrene, which are one of the main sources of such pollutants in the environment . Generally, at room temperature, coal tar pitch is a black brittle lump, shiny; smelly, flammable and toxic when me...

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Problems solved by technology

[0005] It can be seen from the above patents and documents that when pitch is used as the basic raw material, most of its applications are basically limited to porous carbon materials, and it is rarely applied to high molecular porous polymers.

Moreover, when using the template method to prepare carbon materials, especially templates such as silica, it is necessary to use hydrofluoric acid to remove the template, the operation is more complicated and the pollution is serious; the process of preparing porous carbon by heating using a hard template or chemical activation method , the activation time is long, the energy consumption is high, the cost is high, and the pollution is serious

These problems have limited the development of porous materials such as activated carbon prepared from asphalt

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