Finely Tuning the Microporosity and Gas Permeation Properties in Superacid-Catalyzed Polymers of Intrinsic Microporosity,Industrial & Engineering Chemistry Research

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Finely Tuning the Microporosity and Gas Permeation Properties in Superacid-Catalyzed Polymers of Intrinsic Microporosity
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2023-12-26 , DOI: 10.1021/acs.iecr.3c03571
Lili Gong ₁ , Zhili Cai ₁ , Can Wang ₁ , Ju Bai ₁ , Linglong Shan ₁ , Xianghai Meng ₂ , King Lun Yeung ₃ , Haitao Zhang ₁ , Zhichang Liu ₂ , Shuangjiang Luo _{1,

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Affiliation

Superacid-catalyzed polymers of intrinsic microporosity have attracted increasing attention in membrane-mediated gas separation due to their good processability, facile polymerization procedure, and tunable microporosity and gas separation performance. In this study, we synthesized a series of new superacid-catalyzed polymers with fully ladder backbones and well-defined micropores using a one-pot condensation polymerization. The incorporation of a contorted spirobisindane building block facilitated the formation of highly microporous structures in the resulting polymers, enhancing their intrinsic microporosity and gas separation properties. Among the three SACPs, SACP-PhMe exhibited the largest d-spacing value, specific surface area, and pore volume due to its bulkiest side group. The gas separation performance of the SACP membranes surpassed several benchmark polymer membranes, with the SACP-PhMe membrane demonstrating excellent performance in separating CO₂/CH₄, H₂/CH₄, O₂/N₂, and H₂/N₂. The SACP-Me membrane exhibited the lowest porosity, making it less susceptible to CO₂ absorption and showing superior plasticization resistance. The results highlight the promising gas separation properties of the SACPs and their potential for various gas separation applications, offering new opportunities for advanced polymer membrane design.

中文翻译：

微调超酸催化固有微孔聚合物的微孔率和气体渗透性能

具有固有微孔性的超酸催化聚合物由于其良好的加工性能、简便的聚合过程以及可调节的微孔性和气体分离性能，在膜介导的气体分离中引起了越来越多的关注。在这项研究中，我们使用一锅缩聚法合成了一系列具有完全梯形主链和明确微孔的新型超强酸催化聚合物。扭曲的螺二茚烷结构单元的加入促进了所得聚合物中高度微孔结构的形成，增强了其固有的微孔性和气体分离性能。在三种 SACP 中，SACP-PhMe 由于其最大的侧基而表现出最大的d间距值、比表面积和孔体积。SACP膜的气体分离性能超过了几种基准聚合物膜，其中SACP-PhMe膜在分离CO ₂ /CH ₄、H ₂ /CH ₄、O ₂ /N ₂和H ₂ /N ₂方面表现出优异的性能。SACP-Me膜表现出最低的孔隙率，使其不易吸收CO ₂并表现出优异的耐塑性。研究结果凸显了 SACP 具有前景的气体分离特性及其在各种气体分离应用中的潜力，为先进聚合物膜设计提供了新的机会。

更新日期：2023-12-26

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