具有内在微孔性的基功能化聚合物和用于高性能膜式气体分离的双功能混合物
Yingge Wang1, Nasser Alaslai2,3, Bader Ghanem1
1Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
Advanced materials (Deerfield Beach, Fla.)
|September 26, 2024
概括
新的内在微孔性 (PIM) 膜的耐塑性聚合物提供了优越的气体分离性能. 这些先进材料,包括基和基功能化聚胺混合物,对工业应用具有很高的选择性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 聚合物化学 聚合物化学
背景情况:
- 膜技术是传统气体分离方法的一个日益增长的,节能的替代方案.
- 内在微孔性聚合物 (PIM) 和内在微孔性聚合物 (PIM-PI) 对气体透具有前景.
- 开发强大,高性能的膜材料对于降低成本至关重要.
研究的目的:
- 开发基于PIM的新型塑化耐用的膜材料.
- 为了研究功能化的PIM和PIM-PI的气体分离性能.
- 探索氧基和氧基功能化聚胺混合物的潜力.
主要方法:
- 合成基功能化的梯子PIM和PIM-PI同聚合物.
- 制备双功能的聚胺混合物 (基于6FDA).
- 气体透测试用于确定各种气体对 (CO2/CH4,O2/N2,H2/CH4) 的选择性和透性.
主要成果:
- 报告了第一个基功能化的三基和特罗格基基衍生的梯子PIM.
- 6基于FDA的PIM-PI混合物显示出异常高的选择性.
- 一个优化的聚胺混合物实现了对CO2/CH4的136的连续选择性值,对O2/N2的11.4和H2/CH4.4的636的连续选择性值.
- 高选择性归因于通过键的物理交联.
结论:
- 建立了一个新的策略,用于创建坚固,高度选择性和耐塑性PIM基膜.
- 功能化的PIM-PI混合物显示了工业气体分离应用的巨大潜力.
- 开发的材料为更高效和更具成本效益的气体分离工艺提供了途径.
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