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Cross-linked polybenzimidazole membrane for gas separation

United States Patent

February 14, 2006
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
A cross-linked, supported polybenzimidazole membrane for gas separation is prepared by reacting polybenzimidazole (PBI) with the sulfone-containing crosslinking agent 3,4-dichloro-tetrahydro-thiophene-1,1-dioxide. The cross-linked reaction product exhibits enhanced gas permeability to hydrogen, carbon dioxide, nitrogen, and methane as compared to the unmodified analog, without significant loss of selectivity, at temperatures from about 20 degrees Celsius to about 400 degrees Celsius.
Young; Jennifer S. (Los Alamos, NM), Long; Gregory S. (Los Alamos, NM), Espinoza; Brent F. (Los Alamos, NM)
The Regents of the University of California (Los Alamos, NM)
10/ 901,401
July 28, 2004
STATEMENT REGARDING FEDERAL RIGHTS This invention was made with government support under Contract No. W7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.