Amine-Functionalized Metal Organic Framework (MOF)/6FDA-Durene Composite Membranes for CO2 Removal from CH4. (2019)

• Record Type: Journal Article
• Authors: Hartini Suhaimi, Nadia; Fong Yeong, Yin; Jusoh, Norwahyu; Farid Mohd Asri, Muhamad
• Is Part Of: Materials today. Volume 19:Part 4(2019)
• Page Start: 1730
• Page End: 1737
• Publication Date: 2019
• Subjects: Composite membranes -- 6FDA-Durene -- metal organic framework (MOF) -- CO2/CH4 separation; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2019.11.203
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: In this work, composite membranes were fabricated by incorporating amine-functionalized zeolitic imidazolate framework 8 (ZIF-8) into 6FDA-durene polyimide. ZIF-8 particles was functionalized by N -[3-(Dimethoxymethylsilyl)propyl] ethylenediamine (AAPTMS) and N 1 -(3-Trimethoxysilylpropyl) diethylenetriamine (AEPTMS). Functionalization of ZIF-8 by amine-functional group may possibly enhance the CO2 /CH4 separation performances by improving the compatibility between ZIF-8 and 6FDA-durene polymer. The resultant membranes were analysed by using X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM) and Energy Dispersion X-ray (EDX). Then, the separation performance test were performed using pure carbon dioxide (CO2 ) and methane (CH4 ) gases. The results showed that CO2 permeability of 548 Barrer and CO2 /CH4 ideal selectivity of 17 were obtained using 1.0 wt% AAPTMS-ZIF-8/6FDA-durene composite membrane, while 1.0 wt% AEPTMS-ZIF-8/6FDA-durene composite membrane exhibited CO2 permeability of 533 barrer and CO2 /CH4 gas pair selectivity of 12. On the other hand, 1.0 wt% ZIF-8/6FDA-durene composite membrane showed CO2 permeability and CO2 /CH4 selectivity of 610 barrer and 15, respectively. Therefore, it can be concluded in this work that, selection of another suitable amine functionalization group for the modification of ZIF-8 is needed in later works to further improve the performance of the membrane in CO2 removal from CH4 .