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6FDA-DAM: DABA Co-Polyimide Mixed Matrix Membranes with GO and ZIF-8 Mixtures for Effective CO2/CH4 Separation.
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SYSNO ASEP 0553839 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název 6FDA-DAM: DABA Co-Polyimide Mixed Matrix Membranes with GO and ZIF-8 Mixtures for Effective CO2/CH4 Separation. Tvůrce(i) Jain, A. (CZ)
Ahmad, M.Z. (CZ)
Linkes, A. (CZ)
Martin-Gil, V. (CZ)
Castro-Munoz, R. (CZ)
Izák, Pavel (UCHP-M) RID, ORCID, SAI
Šofer, Z. (CZ)
Hintz, W. (DE)
Fíla, V. (CZ)Číslo článku 668 Zdroj.dok. Nanomaterials. - : MDPI
Roč. 11, č. 3 (2021)Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova 6FDA-polyimide ; mixed matrix membranes ; ZIF-8/GO Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství Obor OECD Chemical process engineering CEP EF16_026/0008413 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000634002800001 EID SCOPUS 85102043231 DOI 10.3390/nano11030668 Anotace This work presents the gas separation evaluation of 6FDA-DAM:DABA (3:1) co-polyimide and its enhanced mixed matrix membranes (MMMs) with graphene oxide (GO) and ZIF-8 (particle size of <40 nm). The 6FDA-copolyimide was obtained through two-stage poly-condensation polymerization, while the ZIF-8 nanoparticles were synthesized using the dry and wet method. The MMMs were preliminarily prepared with 1-4 wt.% GO and 5-15 wt.% ZIF-8 filler loading independently. Based on the best performing GO MMM, the study proceeded with making MMMs based on the mixtures of GO and ZIF-8 with a fixed 1 wt.% GO content (related to the polymer matrix) and varied ZIF-8 loadings. All the materials were characterized thoroughly using TGA, FTIR, XRD, and FESEM. The gas separation was measured with 50:50 vol.% CO2:CH4 binary mixture at 2 bar feed pressure and 25 degrees C. The pristine 6FDA-copolyimide showed CO2 permeability (P-CO2) of 147 Barrer and CO2/CH4 selectivity (alpha(CO2/CH4)) of 47.5. At the optimum GO loading (1 wt.%), the P-CO2 and alpha(CO2/CH4) were improved by 22% and 7%, respectively. A combination of GO (1 wt.%)/ZIF-8 fillers tremendously improves its P-CO2, by 990% for GO/ZIF-8 (5 wt.%) and 1.124% for GO/ZIF-8 (10 wt.%). Regrettably, the MMMs lost their selectivity by 16-55% due to the non-selective filler-polymer interfacial voids. However, the hybrid MMM performances still resided close to the 2019 upper bound and showed good performance stability when tested at different feed pressure conditions. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2022 Elektronická adresa https://www.mdpi.com/2079-4991/11/3/668
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