Hydraulic Performance Modifications of a Zeolite Membrane after an Alkaline Treatment: Contribution of Polar and Apolar Surface Tension Components
作者： Patrick Dutournié , Ali Said , T. Jean Daou , Jacques Bikaï , Lionel Limousy
DOI: 10.1155/2015/524259
关键词:
摘要: Hydraulic permeability measurements are performed on low cut-off Na-mordenite (MOR-type zeolites) membranes after a mild alkaline treatment. A decrease of the hydraulic is systematically observed. Contact angle carried out (with three polar liquids) films seeded onto alumina plates (flat membranes). contact angles observed treatment for liquids. According to theory Lifshitz-van der Waals interactions in condensated state, surface modifications investigated and variation component material tension After treatment, electron-donor contribution (mainly due two remaining lone electron pairs oxygen atoms present zeolite extra frameworks) decreases an increase electron-receptor quantified. The attributed presence defaults, which hydrophilicity. estimated interaction energy between solvent (water) active layer good agreement with
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