Preparation and CO2 separation performance of mixed matrix membranes incorporated with open metal sites-containing MIL-101(Cr)

被引：0
|
作者：
Guo X. [1 ]
Yang Q. [1 ]
机构：
[1] State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing
来源：
Huagong Xuebao/CIESC Journal | 2017年 / 68卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Carbon dioxide; Membranes; Metal-organic frameworks; Open metal sites; Separation;
D O I：
10.11949/j.issn.0438-1157.20170553
中图分类号：
学科分类号：
摘要：
Mixed matrix membranes (MMMs) were prepared by combining open metal sites-containing MIL-101(Cr) with three different kinds of polymers. CO2 separation performance of these prepared MMMs was further examined from the aspects of filler structure, polymer properties, and filler-polymer interface conditions. Benefiting from the large pore aperture and strong Lewis acid-base interactions between the open Cr(III) sites and CO2 molecules, the incorporation of MIL-101(Cr) can greatly improve the gas permeability and separation factor of PSF membrane. The results indicate that when polymer with high selectivity and permeability is used, only the gas permeability is improved with the CO2 separation factor slightly decreased. When polymer with high chain mobility is used, the surface pores could be blocked by the polymer chains, leading to obvious decrease in gas permeability of the MMMs. © All Right Reserved.
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页码：4323 / 4332
页数：9
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