Etched ZIF-8 as a Filler in Mixed-Matrix Membranes for Enhanced CO2/N2 Separation

被引：28

作者：

Zhou, Yichen ^{[1
]}

Jia, Mingmin ^{[1
]}

Zhang, Xiongfei ^{[1
]}

Yao, Jianfeng ^{[1
]}

机构：

[1] Nanjing Forestry Univ Dept, Coll Chem Engn, Jiangsu Key Lab Chem & Utilizat Agr & Forest Biom, Jiangsu Key Lab Biomass Based Green Fuels & Chem, Nanjing 210037, Jiangsu, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2020年 / 26卷 / 35期

关键词：

acid etching; gas separation; metal-organic frameworks; mixed-matrix membranes; polyethersulfones; zeolites; METAL-ORGANIC FRAMEWORK; CO2; SEPARATION; PERFORMANCE; ULTRATHIN; MOFS;

D O I：

10.1002/chem.202000965

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Zeolite ZIF-8 has been etched with acid to form microporous ZIF-8-E crystals. These were then introduced into a polyethersulfone (PES) membrane matrix to enhance its CO2/N-2 separation performance. Open through pores of size about 100 nm formed in the ZIF-8 crystals allow the ingrowth of polyethersulfone chains, ensuring a reduction in the number of nonselective voids, thereby achieving better interaction between ZIF-8-E and PES. As a result, the CO2/N-2 separation performance of the ZIF-8-E/PES membrane increased significantly, showing a CO2 permeability of 15.7 Barrer and a CO2/N-2 ideal selectivity of 6.5.

引用

页码：7918 / 7922

页数：5

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