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Affinity between metal – organic frameworks and polyimides in asymmetric mixed matrix membranes for gas separations / Huiqing Ren in Industrial & engineering chemistry research, Vol. 51 N° 30 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 10156-10164 Titre : Affinity between metal – organic frameworks and polyimides in asymmetric mixed matrix membranes for gas separations Type de document : texte imprimé Auteurs : Huiqing Ren, Auteur ; Jiaying Jin, Auteur ; Jun Hu, Auteur Année de publication : 2012 Article en page(s) : pp. 10156-10164 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Affinity Résumé : A series of flat-sheet asymmetric mixed matrix membranes (MMMs) have been fabricated with MOF-5, Cu3(BTC)2, and MIL 53(Al) as fillers and PI polymer as a matrix through the dry―wet phase inversion method. After the surface modification by coating a PAA solution (15% wt) on the top of the obtained membrane, a thin defect-free selective skin in the MMM is obtained. The permeance of various gases such as H2, He, CH4, N2, and CO2 and their gas pair selectivity have been investigated, respectively. The results show that Cu3(BTC)2/PI MMM possesses the best gas separation performance with H2 permeance of 0.44 GPU and H2/CH, selectivity of 100. In addition, the mechanism of MOF fillers in MMMs has been further revealed by the interaction analysis between MOF fillers and PI chains. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201431 [article] Affinity between metal – organic frameworks and polyimides in asymmetric mixed matrix membranes for gas separations [texte imprimé] / Huiqing Ren, Auteur ; Jiaying Jin, Auteur ; Jun Hu, Auteur . - 2012 . - pp. 10156-10164. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 10156-10164 Mots-clés : Affinity Résumé : A series of flat-sheet asymmetric mixed matrix membranes (MMMs) have been fabricated with MOF-5, Cu3(BTC)2, and MIL 53(Al) as fillers and PI polymer as a matrix through the dry―wet phase inversion method. After the surface modification by coating a PAA solution (15% wt) on the top of the obtained membrane, a thin defect-free selective skin in the MMM is obtained. The permeance of various gases such as H2, He, CH4, N2, and CO2 and their gas pair selectivity have been investigated, respectively. The results show that Cu3(BTC)2/PI MMM possesses the best gas separation performance with H2 permeance of 0.44 GPU and H2/CH, selectivity of 100. In addition, the mechanism of MOF fillers in MMMs has been further revealed by the interaction analysis between MOF fillers and PI chains. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201431

Mixed - matrix membrane hollow fibers of Cu3(BTC)2 MOF and polyimide for gas separation and adsorption / Jun Hu in Industrial & engineering chemistry research, Vol. 49 N° 24 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12605-12612 Titre : Mixed - matrix membrane hollow fibers of Cu3(BTC)2 MOF and polyimide for gas separation and adsorption Type de document : texte imprimé Auteurs : Jun Hu, Auteur ; Hongpei Cai, Auteur ; Huiqing Ren, Auteur Année de publication : 2011 Article en page(s) : pp. 12605-12612 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Adsorption  Hollow  fiber Résumé : Metal-organic framework (MOF) crystals of Cu3(BTC)2 with a high surface area (1396 m2·g-1) were synthesized and mixed with polyimide (PI) to prepare mixed-matrix membranes (MMMs) for gas separations. The PI-Cu3(BTC)2 blend was successfully spun into MMM hollow fiber by the dry/wet-spinning method. SEM images of the fiber cross sections revealed significant plastic deformation of the polymer matrix owing to the strong affinity between Cu3(BTC)2 and PI. The H2 permeance and the selectivity of H2 with respect to other gases such as N2, CO2, O2, and CH4 both increased markedly with increased Cu3(BTC)2 loading. At a loading of 6 wt % Cu3(BTC)2, the permeance of H2 increased by 45%, and the ideal selectivity increased by a factor of 2—3 compared to the corresponding values for pure PI. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23692016 [article] Mixed - matrix membrane hollow fibers of Cu3(BTC)2 MOF and polyimide for gas separation and adsorption [texte imprimé] / Jun Hu, Auteur ; Hongpei Cai, Auteur ; Huiqing Ren, Auteur . - 2011 . - pp. 12605-12612. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12605-12612 Mots-clés : Adsorption  Hollow  fiber Résumé : Metal-organic framework (MOF) crystals of Cu3(BTC)2 with a high surface area (1396 m2·g-1) were synthesized and mixed with polyimide (PI) to prepare mixed-matrix membranes (MMMs) for gas separations. The PI-Cu3(BTC)2 blend was successfully spun into MMM hollow fiber by the dry/wet-spinning method. SEM images of the fiber cross sections revealed significant plastic deformation of the polymer matrix owing to the strong affinity between Cu3(BTC)2 and PI. The H2 permeance and the selectivity of H2 with respect to other gases such as N2, CO2, O2, and CH4 both increased markedly with increased Cu3(BTC)2 loading. At a loading of 6 wt % Cu3(BTC)2, the permeance of H2 increased by 45%, and the ideal selectivity increased by a factor of 2—3 compared to the corresponding values for pure PI. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23692016