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Cross-linked polymeric membranes for carbon dioxide separation

United States Patent

January 23, 2018
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
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.
Hong; Tao (Knoxville, TN), Chatterjee; Sabornie (Knoxville, TN), Mahurin; Shannon Mark (Lenoir City, TN), Long; Brian Keith (Knoxville, TN), Jiang; De-en (Riverside, CA), Mays; Jimmy Wayne (Knoxville, TN), Sokolov; Alexei P. (Knoxville, TN), Saito; Tomonori (Knoxville, TN)
UT-Battelle, LLC (Oak Ridge, TN), University of Tennessee Research Foundation (Knoxville, TN)
14/ 826,338
August 14, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with government support under Prime Contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in the invention.