Pervaporation separation of ethanol-water mixtures using polyethylenimine composite membranes

Patent · Tue Apr 21 00:00:00 EDT 1987

OSTI ID:7012203

Neidlinger, H H; Schissel, P O; Orth, R A

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.

• DOE Contract Number: AC02-83CH10093
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 4659590; A
• Application Number: PPN: US 6-746592
• OSTI ID: 7012203
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090900 -- Biomass Fuels-- Processing-- (1990-)
10 SYNTHETIC FUELS
100200* -- Synthetic Fuels-- Production-- (1990-)
ALCOHOLS
ETHANOL
FABRICATION
HYDROXY COMPOUNDS
MECHANICAL STRUCTURES
MEMBRANE TRANSPORT
MEMBRANES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENES
POLYMERS
POLYOLEFINS
SEPARATION PROCESSES
SUPPORTS