一种用于吸附挥发性有机气体的多级孔共价有机框架材料的制备方法
By preparing hierarchical porous covalent organic framework materials, the problem of low adsorption efficiency in existing technologies has been solved, achieving efficient adsorption of volatile organic gases and regulating pore size, thereby improving gas mass transfer and diffusion performance.
CN117024686BActive Publication Date: 2026-07-17CHINA TOBACCO ZHEJIANG IND CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA TOBACCO ZHEJIANG IND CO LTD
- Filing Date
- 2023-08-14
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies struggle to efficiently adsorb and adjust pore sizes to accommodate volatile organic gases of varying sizes, resulting in low adsorption efficiency.
Method used
A method for preparing hierarchical porous covalent organic framework materials was adopted, which involves reacting benzidine and [1,1':3',1”-terphenyl]-3,3”,5,5”-tetracarboxaldehyde in an organic solvent, combined with a catalyst to prepare a hierarchical porous structure, and adjusting the pore size range to accommodate organic materials of different sizes.
Benefits of technology
It achieves highly efficient adsorption of volatile organic gases of different sizes, with an adsorption efficiency of over 91.5%, significantly improving gas mass transfer and diffusion performance.
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Figure BDA0004393348610000051 
Figure BDA0004393348610000052
Abstract
本发明公开了一种用于吸附挥发性有机气体的多级孔共价有机框架材料的制备方法，其特征在于，包括以下步骤：(1)在有机溶剂中加入联苯胺，超声分散后，得溶液A；(2)将对应摩尔量的[1,1':3',1”‑三联苯]‑3,3”,5,5”‑四甲醛溶于步骤(1)得溶液A中，并超声分散，得到溶液B；继续加入催化剂水溶液，超声分散后，得溶液C；(3)将上述溶液C转移至聚四氟乙烯反应釜中，在密闭环境加热，得到的粗产物用有机溶剂清洗后真空干燥，得黄色粉末。本发明的共价有机框架材料，通过调节联苯胺的尺寸和侧链基团，可以调节孔道孔径范围，有利于吸附不同尺寸的有机物；此外，通过改变侧链基团有利于吸引有机气体进入孔道。
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