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Liquid absorbent solutions for separating nitrogen from natural gas

United States Patent

6,077,457
June 20, 2000
View the Complete Patent at the US Patent & Trademark Office
Nitrogen-absorbing and -desorbing compositions, novel ligands and transition metal complexes, and methods of using the same, which are useful for the selective separation of nitrogen from other gases, especially natural gas.
Friesen; Dwayne T. (Bend, OR), Babcock; Walter C. (Bend, OR), Edlund; David J. (Redmond, OR), Lyon; David K. (Bend, OR), Miller; Warren K. (Bend, OR)
Bend Research, Inc. (Bend, OR)
09/ 151,405
September 10, 1998
The government has rights in this invention pursuant to Contract Nos. DE-FG-90ER80892 and DE-FG03-93ER81551 awarded by the Department of Energy.