Sulfolane-Cross-Polybenzimidazole Membrane For Gas Separation

Patent · Mon Feb 13 23:00:00 EST 2006

OSTI ID:880549

Young, Jennifer S ^[1]; Long, Gregory S ^[1]; Espinoza, Brent F ^[1]

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1. Los Alamos, NM

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.

• Research Organization: Los Alamos National Laboratory
• DOE Contract Number: W-7405-ENG-36
• Assignee: The Regents of the University of California (Los Alamos, NM)
• Patent Number(s): US 6,997,971
• Application Number: 10/901401
• OSTI ID: 880549
• Country of Publication: United States
• Language: English