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Pervaporation of benzene/cyclohexane mixtures through aromatic polyamide membranes

Tipo de material: TextoTextoSeries ; Journal of Membrane Science, 185(2), p.193-200, 2001Trabajos contenidos:
  • Wang, Y-Ch
  • Li, Ch-L
  • Huang, J
  • Lin, Ch
  • Lee, K-R
  • Liaw, D.-J
  • Lai, J.-Y
Tema(s): Recursos en línea: Resumen: A series of novel aromatic polyamides based on the 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (BAPPH)and 2,2-bis[4-(4-aminophenoxy)phenyl]propane (BAPPP)with various aromatic diacids were investigated for pervaporation separation of benzene/cyclohexane binary system. The aromatic polyamide membranes exhibited a benzene-permselectivity for all the feed compositions and the permeation rate increased with increasing benzene in the feed solution. The fluorine-containing polyamide membranes were swollen in benzene but only slightly in cyclohexane. A separation factor toward benzene, a permeation rate, and a pervaporation separation index (PSI)value through the fluorine-containing polyamide membrane (F-3)for a 50 wt.
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A series of novel aromatic polyamides based on the 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (BAPPH)and 2,2-bis[4-(4-aminophenoxy)phenyl]propane (BAPPP)with various aromatic diacids were investigated for pervaporation separation of benzene/cyclohexane binary system. The aromatic polyamide membranes exhibited a benzene-permselectivity for all the feed compositions and the permeation rate increased with increasing benzene in the feed solution. The fluorine-containing polyamide membranes were swollen in benzene but only slightly in cyclohexane. A separation factor toward benzene, a permeation rate, and a pervaporation separation index (PSI)value through the fluorine-containing polyamide membrane (F-3)for a 50 wt.

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