Park, Sunghwan Bang, Joona Choi, Jungkyu Lee, Sang Hyup Lee, Jung-Hyun Lee, Jong Suk 2024-01-20T08:31:51Z 2024-01-20T08:31:51Z 2021-09-02 2014-11-05 1383-5866 https://pubs.kist.re.kr/handle/201004/126133 The effect of 3-dimensionally disordered mesoporous silica (DMS) was investigated on the transport of two different glassy polymer matrices, 6FDA-DAM:DABA (3:2) and polysulfone (PSf). More specifically, single gas (i.e. N-2, CO2, CH4 and NF3) permeabilities of the mixed matrix membranes (MMMs) were characterized as a function of DMS volume fractions. Our permeation results demonstrated that both 6FDA-DAM:DABA (3:2)- and PSf-based MMMs with a nominal DMS weight fraction of 0.2 substantially improved all the single gas permeabilities mainly due to the diffusivity improvement. Such a significant increase in diffusivity is attributed to the 3-dimensionally interconnected pore structures of DMS particles. NF3, a missing greenhouse gas, exhibited the permeability improvement mechanism different from other gases. Besides, at the relatively lower DMS loading, difference in the extent of increase in permeability was observed for two different polymer cases. It was explained presumably by the effect of a high resistance zone-of-influence, or the rigidification of matrix polymer chains around inorganic particles. Our study suggests that 3-dimensional DMS particle-containing MMMs can provide a useful material platform for separating N-2/NF3, CO2/CH4, and CO2/N-2, by substantially increasing permeability, thereby cutting down the capital cost of membrane units. (C) 2014 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV GLASS-TRANSITION NANOCOMPOSITE MEMBRANES NITROGEN TRIFLUORIDE POLYIMIDE MEMBRANES ZEOLITE 4A POLYSULFONE PERMEABILITY PERMEATION MCM-41 POLYMERS 3-Dimensionally disordered mesoporous silica (DMS)-containing mixed matrix membranes for CO2 and non-CO2 greenhouse gas separations Article 10.1016/j.seppur.2014.09.016 1 SEPARATION AND PURIFICATION TECHNOLOGY, v.136, pp.286 - 295 SEPARATION AND PURIFICATION TECHNOLOGY 136 286 295 scie scopus 000344831100036 2-s2.0-84908509630 Engineering, Chemical Engineering Article GLASS-TRANSITION NANOCOMPOSITE MEMBRANES NITROGEN TRIFLUORIDE POLYIMIDE MEMBRANES ZEOLITE 4A POLYSULFONE PERMEABILITY PERMEATION MCM-41 POLYMERS Greenhouse gas separations Mixed matrix membranes 3-D disordered mesoporous silica