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合成高交联聚合物与深度欧性溶剂来增强CO2的选择性

Liang Ding¹, Nadhita Chanchaona¹, Kristina Konstas²

¹School of Engineering, The University of Edinburgh, Kings Building, Edinburgh, EH93FB, United Kingdom.

|February 1, 2024

概括

研究人员开发了一种更绿色的方法来合成超交联聚合物 (HCPs),使用深度性溶剂 (DES) 而不是危险的化溶剂. 这种新的方法提高了气体分离材料的CO2/N2选择性.

科学领域:

聚合物化学聚合物化学
材料科学材料科学材料科学
绿色化学绿色化学

背景情况:

超交联聚合物 (HCP) 对于离子交换和气体分离等应用至关重要.
传统的HCP合成依赖于有毒的素溶剂,造成环境和健康风险.

研究的目的:

为了研究在HCP合成中用深度性溶剂 (DES) 取代危险的化溶剂的可行性.
探索DES作为Friedel Crafts化中的溶剂和催化剂的有效性,用于聚合物交叉链接.

主要方法:

使用两个不同的DES配方合成HCP:[ChCl][ZnCl2]2和[ChCl][FeCl3]2.2.
采用了内部和外部交叉连接策略.
描述了合成的HCP,重点是表面积,孔径分布和气体选择性.

主要成果:

在DES中合成的HCP与用素溶剂制成的HCP相比,其特异性表面积比20-60%更低.
显著提高了CO2/N2选择性,达到高达453%的较高值.
通过内部交叉连接在[ChCl][ZnCl2]2中合成的聚α,α'-二chloro-p-xylene实现了105.5的CO2/N2选择性.

结论:

深度环氧溶剂为HCP合成提供了一种可行的,更绿色的替代物,而不是化溶剂.
在DES中合成的HCP具有较窄的孔径分布,从而提高了气体分离性能,特别是对于CO2/N2选择性.

关键词:

CO2/N2 的选择性.深层欧性溶剂深层欧性溶剂超交叉连接的聚合物

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