A kind of porous solid amine and preparation method thereof

Abstract

The invention discloses a porous solid amine and a preparation method thereof. Using epoxy compounds and polyamines as raw materials and boric acid as a buffer to slow down the intensity of the reaction, the porous solid amine material is prepared by cross-linking polymerization. The structure It is similar to a sponge-like solid, with a large number of pores, and there are amine groups in it. It is alkaline, has the ability to absorb acid gases such as carbon dioxide, and can also form chelates with metal ions.

Description

technical field

[0001] The invention relates to the field of compounds, in particular to a porous solid amine and a preparation method thereof. Background technique

[0002] The solid amine is CO 2 Absorbent, mainly used for CO in closed compartments such as submarines, spaceships, and space stations 2 Removal can replace the original methods such as ethanolamine or LiOH to solve problems such as corrosion, leakage, reliability, and reproducibility. Solid amine adsorbents are usually prepared by two methods: (1) loading organic amines on the support by impregnation; (2) distributing amino groups on the surface of the support by grafting. Impregnation is a widely used approach to prepare catalysts and adsorbents (Yue Mingbo, Zhu Jianhua, Acta Catalytica Sinica, 2008, Vol. 29, No. 10, 1051-1057). For example, Liu Yamin and others used the impregnation method to load tetraethylenepentamine on the surface of KIT-6 mesoporous silicon material to synthesize hyperbranched solid ...

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