Modified ZIF-8 mixed matrix membrane for CO2/CH4 separation

Nordin, N.A.H.M. and Ismail, A.F. and Misdan, N. and Nazri, N.A.M. (2017) Modified ZIF-8 mixed matrix membrane for CO2/CH4 separation. AIP Conference Proceedings, 1891.

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Abstract

Tunability of metal-organic frameworks (MOFs) properties enables them to be tailored for specific applications. In this study, zeolitic imidazole framework 8 (ZIF-8), sub-class of MOF, underwent pre-synthesis and post-synthesis modifications. The pre-synthesis modification using GO (ZIF-8/GO) shows slight decrease in textural properties, while the post-synthesis modification using amine solution (ZIF-8/NH2) resulted in superior BET surface area and pore volume. Mixed matrix membranes (MMMs) derived from polysulfone (PSf) and the modified ZIF-8s were then prepared via dry/wet phase inversion. The polymer chain flexibility of the resulted MMMs shows rigidification, where ZIF-8/NH2 as filler resulting higher rigidification compared to ZIF-8/GO. The MMMs were further subjected to pure CO2 and CH4 gas permeation experiments. The PSf/ZIF-8/NH2 shows superior CO2/CH4 selectivity (88 increased) while sacrificing CO2 permeance due to combination of severe polymer chain rigidification and the presence of CO2-philic group, amine. Whereas, the PSf/ZIF-8/GO possess 64 increase in CO2 permeance without notable changes in CO2/CH4 selectivity. © 2017 Author(s).

Item Type: Article
Impact Factor: cited By 0
Departments / MOR / COE: Division > Academic > Faculty of Engineering > Chemical Engineering
Depositing User: Mr Ahmad Suhairi Mohamed Lazim
Date Deposited: 22 Apr 2018 14:34
Last Modified: 22 Apr 2018 14:34
URI: http://scholars.utp.edu.my/id/eprint/20017

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