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Effects of thermal crosslinking treatment on gas separation performance and stability of polymeric membranes
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SYSNO ASEP 0431121 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Effects of thermal crosslinking treatment on gas separation performance and stability of polymeric membranes Tvůrce(i) Martin-Gil, V. (CZ)
Hrabánek, Pavel (UFCH-W) RID
Sysel, P. (CZ)
Fíla, V. (CZ)Zdroj.dok. CHISA 2014 and PRES 2014 CD-ROM of Full Texts. - Prague : Czech Society of Chemical Engineering, 2014 - ISBN 978-80-02-02555-9 Rozsah stran 0630 Poč.str. 13 s. Forma vydání Nosič - C Akce International Congress of Chemical and Process Engineering CHISA 2014 /21./ and Conference PRES 2014 /17./ Datum konání 23.08.2014-27.08.2014 Místo konání Praha Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova dense membrane ; gas separation ; polyimide Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Institucionální podpora UFCH-W - RVO:61388955 Anotace In this work, (4,4’-Hexafluoroisopropylidene) diphthalic anhydride (6FDA), 2,4,6- trimethyl-1,3-diaminobenzene (DAM) and 3,5-diaminobenzoic acid (DABA) were used to synthesize copolyimides with different ratios of DAM:DABA (2:1 and 9:1) as well as polyimide 6FDA-DAM in order to check the influence of acidic group from DABA in the membrane formation process as well as in the crosslinking treatment. The main aim of crosslinking treatment is to improve the CO 2 induced plasticization resistance of the membrane. Copolyimides were synthesized using two steps reaction: (i) synthesis of polyamic acid (PAA) and (ii) thermal imidization in solution. The obtained crosslinked membranes presented solvent resistance due to the transesterification of the polymer. Furthermore, it could be observed that the crosslinked membranes showed higher permeabilities for small gases (He and H 2 ) and for bigger gases (CO 2 and CH 4 ) permeabilities decreased slightly. It can be due to the densification of the membrane during the thermal treatment. However, this treatment presents highly promising results for H 2 recovery in syngas production or extraction of hydrogen from petroleum naphtha cracking streams Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2015
Počet záznamů: 1