Molecular sieving separation of hexane isomers within nanocomposite (B) - MFI - alumina hollow fiber membranes / Z. Deng in Industrial & engineering chemistry research, Vol. 49 N° 22 (Novembre 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp.11697–11707 Titre : Molecular sieving separation of hexane isomers within nanocomposite (B) - MFI - alumina hollow fiber membranes : a modeling study Type de document : texte imprimé Auteurs : Z. Deng, Auteur ; M. Pera-Titus, Auteur ; Y. Guo, Auteur Année de publication : 2011 Article en page(s) : pp.11697–11707 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nanocomposite Fiber membranes Modeling Résumé : High quality nanocomposite B-MFI hollow fibers were successfully prepared by pore-plugging hydrothermal synthesis. The incorporation of boron into the MFI structure modifies the n-hexane/2,2-dimethylbutane vapor separation properties of the membranes, with the materials improving the n-hexane/2,2-dimethylbutane intrinsic separation factors of Al-MFI by a factor of 2 (up to a value of 200) at comparable conditions. The permeation performance of the membranes is essentially governed by a molecular sieving mechanism driven by preferential diffusion of n-C6 and configurational diffusion effects favoring n-hexane adsorption from n-hexane/2,2-dimethylbutane mixtures. A strong confinement scenario for surface diffusion of both n-hexane and 2,2-dimethylbutane seems to prevail. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101566q [article] Molecular sieving separation of hexane isomers within nanocomposite (B) - MFI - alumina hollow fiber membranes : a modeling study [texte imprimé] / Z. Deng, Auteur ; M. Pera-Titus, Auteur ; Y. Guo, Auteur . - 2011 . - pp.11697–11707. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp.11697–11707 Mots-clés : Nanocomposite Fiber membranes Modeling Résumé : High quality nanocomposite B-MFI hollow fibers were successfully prepared by pore-plugging hydrothermal synthesis. The incorporation of boron into the MFI structure modifies the n-hexane/2,2-dimethylbutane vapor separation properties of the membranes, with the materials improving the n-hexane/2,2-dimethylbutane intrinsic separation factors of Al-MFI by a factor of 2 (up to a value of 200) at comparable conditions. The permeation performance of the membranes is essentially governed by a molecular sieving mechanism driven by preferential diffusion of n-C6 and configurational diffusion effects favoring n-hexane adsorption from n-hexane/2,2-dimethylbutane mixtures. A strong confinement scenario for surface diffusion of both n-hexane and 2,2-dimethylbutane seems to prevail. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101566q

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