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Title: Cross-linked polymeric membranes for carbon dioxide separation

A membrane useful in gas separation, the membrane comprising a cross-linked polysiloxane structure having a cross-link density of about 0.1.times.10.sup.-5 mol/cm.sup.3 to about 6.times.10.sup.-5 mol/cm.sup.3, where, in particular embodiments, the cross-linked polysiloxane structure has the following general structure: ##STR00001## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are independently selected from hydrocarbon groups having at least 1 and up to 6 carbon atoms; A.sup.1 and A.sup.2 are independently selected from cyclic hydrocarbon groups; L.sup.1 and L.sup.2 are linking groups or covalent bonds; n is an integer of at least 1; r and s are independently selected from integers of at least 1; and p is an integer of at least 10. The invention also includes methods for making and using the above-described membranes for gas separation.
Inventors:
; ; ; ; ; ; ;
Issue Date:
OSTI Identifier:
1417966
Assignee:
UT-Battelle, LLC (Oak Ridge, TN); University of Tennessee Research Foundation (Knoxville, TN) ORNL
Patent Number(s):
9,873,094
Application Number:
14/826,338
Contract Number:
AC05-00OR22725
Resource Relation:
Patent File Date: 2015 Aug 14
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Works referenced in this record:

An Efficient Polymer Molecular Sieve for Membrane Gas Separations
journal, January 2013

The group separation of the rare-earth elements and yttrium from geologic materials by cation-exchange chromatography
journal, August 1984