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Sintered ZIF-300/PSU6010 mixed matrix membrane for efficient CO2 separation

Authors： Wei Yiwang, SUN Yuxiu, GUO Xiangyu, QIAO Zhihua

Units： State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and technology, Tiangong University, Tianjin 300387, China

KeyWords： ZIF-300; sintered; mixed matrix membranes; CO2/CH4 separation.

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2023,43(3):30-36

Abstract：

Zeolititic imidazolate frameworks material-300 (ZIF-300) was synthesized with zinc nitrate hexahydrate as metal source, 5-bromobenzimidazole and 2-methylimidazole as ligands. Then SZIF-300 particles sintered at different temperatures were added to polyethersulfone (PSU) as filler to preparing SZIF-300/PSU6010 mixed matrix membranes. In this paper, the effect of different sintering temperature and loading on the gas separation performance of prepared SZIF-300/PSU6010 mixed matrix membrane was studied. At the sintering temperature of 450 ℃, amorphous SZIF-300-3 was synthesized and doped in PSU as filler to prepare the mixed matrix membrane of SZIF-300-3/PSU6010. The results showed under the conditions of 0.2 MPa inlet pressure, 25 ℃ test temperature, 450 ℃ sintering temperature and 30 wt% loading, the CO2 permeability of SZIF-300-3/PSU6010 mixed matrix membrane basically unchanged at 10 barrer. Furthermore, CO2/CH4 selectivity was 60.22, which was 3.4 times of pure PSU membrane selectivity (α(CO2/CH4)=17.15).

Funds：

国家自然科学基金项目(1908163)

AuthorIntro：

魏以旺（1996-），男，天津东丽人，硕士研究生，主要研究方向为气体分离膜的制备，Email：2572450953@qq.com

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