Aldehyde group modified covalent organic framework material, preparation and application thereof

A technology of covalent organic framework and aldehyde group modification, applied in other chemical processes, separation methods, gas treatment, etc., can solve problems such as the study of COFs morphology, and achieve good ordered structure, good stability, and mild reaction conditions. Effect
CN112390924AActive Publication Date: 2021-02-23DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Publication Date
2021-02-23

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Abstract

The invention particularly relates to preparation of an aldehyde group modified covalent organic frameworks (COFs) material, and the aldehyde group modified covalent organic framework material is applied to gas adsorption. The preparation method comprises the following steps of: firstly, selecting a precursor 1, 3, 5-benzenetricarboxaldehyde (TFB) which not only has good rigidity and is highly symmetrical, but also can react with a bifunctional monomer formylhydrazine (FH) through Schiff base, and taking acetic acid as a catalyst to prepare the novel COF with good performance. The prepared covalent organic framework material not only has relatively good stability and relatively large specific surface area, but also forms a hollow structure with relatively uniform size, and the prepared material can be applied to adsorption of carbon dioxide gas.
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Description

technical field

[0001] The present invention specifically relates to the preparation of an aldehyde-modified covalent organic framework material, which can be used for gas storage. Background technique

[0002] Today, global warming and climate change caused by the sharp increase of man-made carbon dioxide emissions in the atmosphere have become the most concerned environmental issues. The capture of carbon dioxide (document 1. Sumida et.al. "Carbon Dioxide Capture in Metal Organic Frameworks", "Chemical Review", 2012, 112, 724-781.) can effectively reduce the emission of carbon dioxide from stationary sources, and will be important role in the future. Due to low energy consumption and simple operation, adsorption and storage of this greenhouse gas in nanoporous materials is considered to be one of the effective ways. Among numerous nanoporous materials, metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs) have been favored in recent years due to their ul...

Claims

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