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Title: Olefin separation membrane and process

A membrane and process for separating unsaturated hydrocarbons from fluid mixtures. The membrane and process differ from previously known membranes and processes, in that the feed and permeate streams can both be dry, the membrane need not be water or solvent swollen, and the membrane is characterized by a selectivity for an unsaturated hydrocarbon over a saturated hydrocarbon having the same number of carbon atoms of at least about 20, and a pressure-normalized flux of said unsaturated hydrocarbon of at least about 5.times.10.sup.-6 cm.sup.3 (STP)/cm.sup.2 .multidot.s.multidot.cmHg, said flux and selectivity being measured with a gas mixture containing said unsaturated and saturated hydrocarbons, and in a substantially dry environment.
 [1];  [2];  [3]
  1. (Palo Alto, CA)
  2. (San Francisco, CA)
  3. (San Jose, CA)
Issue Date:
OSTI Identifier:
Membrane Technology and Research, Inc. (Menlo Park, CA) OAK
Patent Number(s):
US 5670051
Contract Number:
Research Org:
Membrane Technology and Research, Inc. (Menlo Park, CA)
Country of Publication:
United States
olefin; separation; membrane; process; separating; unsaturated; hydrocarbons; fluid; mixtures; previously; membranes; processes; feed; permeate; streams; dry; water; solvent; swollen; characterized; selectivity; hydrocarbon; saturated; carbon; atoms; 20; pressure-normalized; flux; times; 10; -6; cm; stp; multidot; cmhg; measured; gas; mixture; containing; substantially; environment; saturated hydrocarbons; mixture containing; carbon atoms; gas mixture; separation membrane; carbon atom; fluid mixture; unsaturated hydrocarbon; unsaturated hydrocarbons; saturated hydrocarbon; substantially dry; fluid mixtures; /210/95/96/585/