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定向超薄 π-复合MOF膜用于乙烯/乙和烟气分离

Yanwei Sun¹, Shen Hu^1,2, Jiahui Yan¹

¹State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China.

Angewandte Chemie (International ed. in English)

|September 6, 2023

概括

设计的Cu@NH2-MIL-125膜可以实现高选择性以乙烯/乙分离和CO2/N2烟气净化. 分子膜的这种进步为关键的工业分离提供了更好的性能.

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.
分离科学分离科学

背景情况:

高性能分子膜对于工业分离,如乙烯/乙和烟气处理至关重要.
目前的膜在实现高选择性和透性方面面临着挑战.

研究的目的:

理性地设计和设计高性能分子膜.
为了提高乙烯/乙和CO2/N2的分离性能,使用一种新的MOF膜.

主要方法:

制备高度c导向的,厚度小于100纳米的Cu@NH2-MIL-125膜.
将孔隙微环境工程与中层结构操纵相结合.
使用协调不和的Cu离子进行π复合相互作用.

主要成果:

达到13.6的乙烯/乙选择性,比原始膜增加9.4倍.
证明了43.2的优异CO2/N2选择性,其CO2透率为696GPU.
工程膜超越了其他纯MOF膜的性能基准.

结论:

多尺度结构优化显著提高了分子膜性能.
开发的Cu@NH2-MIL-125膜对工业气体分离有很大的前景.
这一战略为开发先进的分离膜提供了一条途径.

关键词:

气体分离气体分离在MOF膜中纳米薄膜的使用方法导航方向导航方向导航方向 π-复杂化复杂化

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