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Title: Dehydration of water-pyridine mixtures by pervaporation

The pervaporation technique, in which the liquid feed mixture is maintained in contact with one side of a nonporous membrane and the permeate is continuously removed from the other side as a vapor, is one of the new methods to attain separation of azeotropic mixtures, structural isomers, or even to displace the equilibrium of chemical reactions. Several ion-exchange and neutral membranes were examined in the pervaporation of water-pyridine mixtures. Carboxylic and sulfonic ion-exchange membranes were used with hydrogen counterion and additionally with trimethylammonium, triethylammonium, and tributylammonium counterions. All membranes were selective to water, but the transport mode and selectivity properties of membranes were dependent on both the character of the ion-exchange group and the ionic form of the membrane. The results obtained suggest that pervaporation of water-pyridine mixtures could be used with standard distillation in the large-scale dehydration process of pyridine.
Authors:
 [1] ; ;  [2]
  1. (N. Copernicus Univ., Torun (Poland) Centre National de la Recherche Scientifique-UA 494, Nancy (France))
  2. (Centre National de la Recherche Scientifique-UA 494, Nancy (France))
Publication Date:
OSTI Identifier:
6026924
Resource Type:
Journal Article
Resource Relation:
Journal Name: Separation Science and Technology; (United States); Journal Volume: 26:8
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; MEMBRANES; PERFORMANCE TESTING; PYRIDINE; MATERIALS RECOVERY; AMMONIUM COMPOUNDS; AZEOTROPE; BINARY MIXTURES; DEHYDRATION; DISTILLATION; EVAPORATION; EXPERIMENTAL DATA; ION EXCHANGE MATERIALS; MEMBRANE TRANSPORT; WATER; AZINES; DATA; DISPERSIONS; HETEROCYCLIC COMPOUNDS; HYDROGEN COMPOUNDS; INFORMATION; MANAGEMENT; MATERIALS; MIXTURES; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PROCESSING; PYRIDINES; RECOVERY; SEPARATION PROCESSES; TESTING; WASTE MANAGEMENT; WASTE PROCESSING 320303* -- Energy Conservation, Consumption, & Utilization-- Industrial & Agricultural Processes-- Equipment & Processes