A covalently integrated ZIF-8/polyamide acid mixed matrix membrane with superior gas separation performance

Guozhen Li; Shiqi Ling; Yuhui Cui; Shilong Dong; Tianyin Liu; Ting Li; Siyu Pang; Peiyong Qin

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A covalently integrated ZIF-8/polyamide acid mixed matrix membrane with superior gas separation performance

Updated：2026-01-06

- A covalently integrated ZIF-8/polyamide acid mixed matrix membrane with superior gas separation performance
- Chinese Journal of Chemical Engineering Vol. 76, Issue 12, Pages: 30-41(2024)
- Affiliations：
  
  1. National Energy Research and Development Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology,Beijing,China,100029
  2. State Key Laboratory of Bio-Based Fiber Manufacturing Technology, China Textile Academy,Beijing,China,100025
  3. Paris Curie Engineer School, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2024
- Accepted：
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Guozhen Li, Shiqi Ling, Yuhui Cui, Shilong Dong, Tianyin Liu, Ting Li, Siyu Pang, Peiyong Qin. A covalently integrated ZIF-8/polyamide acid mixed matrix membrane with superior gas separation performance[J]. Chinese Journal of Chemical Engineering, 2024, 76(12): 30-41.
DOI：

Guozhen Li, Shiqi Ling, Yuhui Cui, Shilong Dong, Tianyin Liu, Ting Li, Siyu Pang, Peiyong Qin. A covalently integrated ZIF-8/polyamide acid mixed matrix membrane with superior gas separation performance[J]. Chinese Journal of Chemical Engineering, 2024, 76(12): 30-41. DOI：

摘要

Abstract

Zeolitic imidazolate framework-8 (ZIF-8) is a typical filler used to fabricate mixed matrix membranes (MMMs) on account of its attractive advantage of high selective permeability for gas separation. However

the performance is usually affected by filler aggregation due to strong interactions among fillers and weak interactions between the polymer and fillers

However

the performance is usually affected by filler aggregation due to strong interactions among fillers and weak interactions between the polymer and fillers

which will lead to a decrease of selectivity and the performance of gas separation will be strongly influenced. Herein

we modified ZIF-8 with 3-amino-1

4-triazole to obtain ZIF-8-NH

Kapton polyamide acid was selected as the polymer matrix. Results showed that the ZIF-8-NH

/Kapton MMMs has a good compatibility interface between ZIF-8 and Kapton because of the covalent bridging

even the filler loading up to 45% (mass). The 45% (mass) of ZIF-8-NH

/Kapton membrane showed 297 barrer (1 barrer = 10

-10

·cm·cm

-2

·s

-1

·cmHg

-1

1 cmHg = 1333.22 Pa

standard temperature and pressure) of the permeability of H

and 43.9 and 62.2 of selectivities for H

and for H

/CH

respectively

which are beyond the upper limit of Robeson 2008.

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