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Solvent and Pressure Influences on Air Separation of Liquid Crystalline Triheptyl Cellulose Composite Ethyl Cellulose Membranes
- Source :
- Separation Science and Technology. 29:671-677
- Publication Year :
- 1994
- Publisher :
- Informa UK Limited, 1994.
-
Abstract
- Air separation of a cholesteric liquid crystalline triheptyl cellulose/ethyl cellulose (3/97) binary composite membrane prepared from tetrahydrofuran, chloroform, and dichloromethane solutions was studied at different pressure differences across the membrane by the variable volume method. With an increasing pressure difference in the range from 0.06 to 0.42 MPa, the flux and the oxygen concentration of the oxygen-enriched air through the membrane both increase. The air separation capability depends on the boiling point of the membrane-forming solvent and the membrane thickness.
Details
- ISSN :
- 15205754 and 01496395
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- Separation Science and Technology
- Accession number :
- edsair.doi...........463d115f49d018d2f3d09833dfd2b234