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Title: Pervaporation separation of ethanol-water mixtures using polyethylenimine composite membranes

Abstract

Synthetic, organic, polymeric membranes were prepared from polyethylenimine for use with pervaporation apparatus in the separation of ethanol-water mixtures. The polymeric material was prepared in dilute aqueous solution and coated onto a polysulfone support film, from which excess polymeric material was subsequently removed. Cross-links were then generated by limited exposure to toluene-2,4-diisocyanate solution, after which the prepared membrane was heat-cured. The resulting membrane structures showed high selectivity in permeating ethanol or water over a wide range of feed concentrations.

Inventors:
 [1];  [2];  [3]
  1. Lakewood, CO
  2. Golden, CO
  3. Denver, CO
Issue Date:
Research Org.:
Midwest Research Institute, Kansas City, MO (United States)
OSTI Identifier:
866224
Patent Number(s):
4659590
Assignee:
United States Department of Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pervaporation; separation; ethanol-water; mixtures; polyethylenimine; composite; membranes; synthetic; organic; polymeric; prepared; apparatus; material; dilute; aqueous; solution; coated; polysulfone; support; film; excess; subsequently; removed; cross-links; generated; limited; exposure; toluene-2; 4-diisocyanate; membrane; heat-cured; resulting; structures; selectivity; permeating; ethanol; water; wide; range; feed; concentrations; subsequently removed; water mixture; composite membranes; composite membrane; polymeric material; aqueous solution; wide range; dilute aqueous; resulting membrane; subsequently remove; support film; polymeric membrane; ethanol-water mixtures; water mixtures; /427/210/

Citation Formats

Neidlinger, Hermann H, Schissel, Paul O, and Orth, Richard A. Pervaporation separation of ethanol-water mixtures using polyethylenimine composite membranes. United States: N. p., 1987. Web.
Neidlinger, Hermann H, Schissel, Paul O, & Orth, Richard A. Pervaporation separation of ethanol-water mixtures using polyethylenimine composite membranes. United States.
Neidlinger, Hermann H, Schissel, Paul O, and Orth, Richard A. Thu . "Pervaporation separation of ethanol-water mixtures using polyethylenimine composite membranes". United States. https://www.osti.gov/servlets/purl/866224.
@article{osti_866224,
title = {Pervaporation separation of ethanol-water mixtures using polyethylenimine composite membranes},
author = {Neidlinger, Hermann H and Schissel, Paul O and Orth, Richard A},
abstractNote = {Synthetic, organic, polymeric membranes were prepared from polyethylenimine for use with pervaporation apparatus in the separation of ethanol-water mixtures. The polymeric material was prepared in dilute aqueous solution and coated onto a polysulfone support film, from which excess polymeric material was subsequently removed. Cross-links were then generated by limited exposure to toluene-2,4-diisocyanate solution, after which the prepared membrane was heat-cured. The resulting membrane structures showed high selectivity in permeating ethanol or water over a wide range of feed concentrations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

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