Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification

The main purpose of this work was studied the effect of ZIF-8 loading on the physical and chemical properties of dual-layer hollow fiber (DLHF) mixed matrix membranes (MMMs). In addition, the effect of the outer dope extrusion rate (DER) of the spinning on the selective layer thickness of the DLHF m...

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Main Author:	Ma, Xuefeng
Format:	Thesis
Language:	English
Published:	2020
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/92017/1/MaXuefengMSChE2020.pdf
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spelling	my-utm-ep.920172021-08-30T04:59:09Z Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification 2020 Ma, Xuefeng TP Chemical technology The main purpose of this work was studied the effect of ZIF-8 loading on the physical and chemical properties of dual-layer hollow fiber (DLHF) mixed matrix membranes (MMMs). In addition, the effect of the outer dope extrusion rate (DER) of the spinning on the selective layer thickness of the DLHF membrane was investigated. Finally, the gas separation performance of the coated DLHF membranes under different ZIF-8 loading and outer DER was evaluated. The recipe for the prepared DLHF membrane is: polysulfone (PSf) as polymer, N, N-dimethylacetamide (DMAc) and tetrahydrofuran (THF) as solvents, and at the same time, the metal organic framework (MOF) ZIF-8 Only added to the outer solution. Then, the solution was co-extruded through triple orifice spinneret in order form dual layer structure of membrane, where the inner layer was consists of pure PSf and the outer layer were the PSf and ZIF-8. Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Thermogravimetric analysis (TGA) and Scanning electron microscopy (SEM) were used to analyse the ZIF-8 material and to detect DLHF membranes. The main findings that obtained from this research are as below: (1) Zeolite imidazole framework8 (ZIF-8) nanoparticles were successfully synthesized in aqueous solution with a particle size of 86.25 nm. (2) Successfully prepared DLHF membrane with high heat resistance, good chemical stability and good interaction between polymer PSf and filler ZIF-8. (3) The optimal loading of ZIF-8 was 0.5wt%, and the CO2 permeability increased dramatically by 61.19% compared to the neat membrane, and the selectivity of CO2/CH4 also improved significantly by 94.46%. (4) The experiment further concluded that when the outer DER was 1 ml/min, the prepared membrane was thin and no defects on the top skin layer. The good combination of ZIF-8 and PSf substrates and the appropriate outer DER explain the application and significance of the novel DLHF membrane. 2020 Thesis http://eprints.utm.my/id/eprint/92017/ http://eprints.utm.my/id/eprint/92017/1/MaXuefengMSChE2020.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:139198 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Ma, Xuefeng Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification
description	The main purpose of this work was studied the effect of ZIF-8 loading on the physical and chemical properties of dual-layer hollow fiber (DLHF) mixed matrix membranes (MMMs). In addition, the effect of the outer dope extrusion rate (DER) of the spinning on the selective layer thickness of the DLHF membrane was investigated. Finally, the gas separation performance of the coated DLHF membranes under different ZIF-8 loading and outer DER was evaluated. The recipe for the prepared DLHF membrane is: polysulfone (PSf) as polymer, N, N-dimethylacetamide (DMAc) and tetrahydrofuran (THF) as solvents, and at the same time, the metal organic framework (MOF) ZIF-8 Only added to the outer solution. Then, the solution was co-extruded through triple orifice spinneret in order form dual layer structure of membrane, where the inner layer was consists of pure PSf and the outer layer were the PSf and ZIF-8. Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Thermogravimetric analysis (TGA) and Scanning electron microscopy (SEM) were used to analyse the ZIF-8 material and to detect DLHF membranes. The main findings that obtained from this research are as below: (1) Zeolite imidazole framework8 (ZIF-8) nanoparticles were successfully synthesized in aqueous solution with a particle size of 86.25 nm. (2) Successfully prepared DLHF membrane with high heat resistance, good chemical stability and good interaction between polymer PSf and filler ZIF-8. (3) The optimal loading of ZIF-8 was 0.5wt%, and the CO2 permeability increased dramatically by 61.19% compared to the neat membrane, and the selectivity of CO2/CH4 also improved significantly by 94.46%. (4) The experiment further concluded that when the outer DER was 1 ml/min, the prepared membrane was thin and no defects on the top skin layer. The good combination of ZIF-8 and PSf substrates and the appropriate outer DER explain the application and significance of the novel DLHF membrane.
format	Thesis
qualification_level	Master's degree
author	Ma, Xuefeng
author_facet	Ma, Xuefeng
author_sort	Ma, Xuefeng
title	Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification
title_short	Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification
title_full	Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification
title_fullStr	Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification
title_full_unstemmed	Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification
title_sort	zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2020
url	http://eprints.utm.my/id/eprint/92017/1/MaXuefengMSChE2020.pdf
_version_	1747818555411267584

Zeolitic imidazolate framework 8 incorporated dual layer hollow fiber membrane for natural gas purification

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