富羧酸基团的共轭微孔聚合物:结构单元对孔隙和气体吸附性能的影响（英文）

发布时间：2018-04-01 21:11

本文选题：共轭微孔聚合物　切入点：羧酸　出处：《物理化学学报》2017年09期

【摘要】：共轭微孔聚合物(CMPs)骨架中的孔和极性基团对聚合物的气体吸附性能起着重要作用。阐明聚合物中极性基团的效果对该领域的进一步发展是必不可少的。为了解决这个根本问题,我们使用最简单的芳香系统-苯作为建筑单体,构筑了两个新颖的富羧酸基团的CMPs(CMP-COOH@1,CMP-COOH@2),并探讨了CMPs中游离羧酸基团的量对其孔隙、吸附焓、气体吸附和选择性的深远影响。CMP-COOH@1和CMP-COOH@2显示的BET比表面积分别为835和765 m~2?g~(-1)。这两种聚合物在二氧化碳存储方面显示了高潜力。在273 K和1.05×10~5 Pa条件下,CMP-COOH@1和CMP-COOH@2的CO_2吸附值分别为2.17和2.63 mmol?g~(-1)。我们的研究结果表明,在相同的条件下增加聚合物中羧基基团的含量可以提高材料对气体的吸附容量和选择性。
[Abstract]:The pore and polar groups in conjugated microporous polymer (CMP s) framework play an important role in the gas adsorption properties of polymers. It is necessary to clarify the effect of polar groups in polymers for further development in this field. Using benzene, the simplest aromatic system, as a building monomer, we have constructed two novel carboxylic acid-rich compounds (CMP), CMP-COOH @ 1 (CMP-COOH @) _ 2 (CMP-COOHPO-2), and investigated the adsorption enthalpy and pore size of free carboxylic acid groups in CMPs. The far-reaching effects of gas adsorption and selectivity. CMP-COOHHPO1 and CMP-COOH@2 show BET specific surface areas of 835 and 765 mm2? The two polymers exhibit high potential for carbon dioxide storage. At 273K and 1.05 脳 105Pa, the CO_2 adsorption values of CMP-COOHP-1 and CMP-COOH@2 are 2.17 and 2.63 mmol 路mol ~ (-1) 路min ~ (-1) 路g ~ (-1) 路g ~ (-1) 路g ~ (-1) 路g ~ (-1) 路g ~ (-1) 路g ~ (-1), respectively. Our results show that increasing the content of carboxyl groups in polymers under the same conditions can improve the adsorption capacity and selectivity of the materials to gases.
【作者单位】：吉林师范大学环境友好材料制备和应用教育部重点实验室;吉林师范大学功能材料物理与化学教育部重点实验室;
【基金】：supported by the National Natural Science Foundation of China(21501065) Science and Technology Program of Jilin Province,China(20160101319JC) Science and Technology Research Program of the Education Department of Jilin Province(2015229) Science and Technology Program of Siping City(2015057)~~
【分类号】：O631.11

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