使用多孔有机聚合物 (POPs) 的混合矩阵膜 - - 纹理特性对CO2/CH4分离的影响
Laura Matesanz-Niño1,2, Jorge Moranchel-Pérez3, Cristina Álvarez1,2
1Department of Applied Macromolecular Chemistry, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain.
Polymers
|October 28, 2023
概括
新的多孔有机聚合物 (POP) 网络被合成并纳入混合矩阵膜 (MMM) 中,用于CO2/CH4分离. 基于生物聚合物的MMM显示出有希望的性能,接近基于Pebax的膜的性能.
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.
- 分离技术 分离技术
背景情况:
- 混合矩阵膜 (MMM) 为整合新型多孔材料提供了一个平台.
- 多孔有机聚合物 (POPs) 具有可调节的多孔性和高二氧化碳吸收,使它们成为有前途的填充物.
- 高效的二氧化碳捕获和分离对于环境和工业应用至关重要.
研究的目的:
- 为了合成低成本的多孔有机聚合物 (POP) 网络.
- 为了制造和评估混合矩阵膜 (MMM),将这些POP用于CO2/CH4分离.
- 研究POP填充剂特性和聚合物矩阵兼容性对膜性能的影响.
主要方法:
- 通过芳香电友替代合成POPs.
- 使用FTIR,NMR,WAXD,TGA,SEM和CO2吸收测量的POPs的表征.
- 在Matrimid,Pebax和奇托:聚乙烯醇 (CS:PVA) 矩阵中制造含有POPs的MMM.
- 气体透实验 (单一和混合气体) 在4bar和室温下.
- 使用麦克斯韦模型方程进行分析.
主要成果:
- 合成的POP具有可调节的多孔性和高二氧化碳吸收.
- 评估了MMM的性能,显示了与麦克斯韦模型的偏差,增加了POP孔隙性和聚合物矩阵水友性.
- 基于生物聚合物的CS:PVA MMM表现出与基于Pebax的MMM可比的分离性能.
结论:
- 开发了新的POP作为MMM的有效填充剂.
- 证明了可持续生物聚合物矩阵 (CS:PVA) 对气体分离膜的潜力.
- 强调了填充剂-矩阵相互作用在设计高性能MMM用于CO2/CH4分离时的重要性.
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