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High and rapid hydrogen release from thermolysis of ammonia borane near PEM fuel cell operating temperature

United States Patent

November 15, 2016
View the Complete Patent at the US Patent & Trademark Office
A system for generating and purifying hydrogen. To generate hydrogen, the system includes inlets configured to receive a hydrogen carrier and an inert insulator, a mixing chamber configured to combine the hydrogen carrier and the inert insulator, a heat exchanger configured to apply heat to the mixture of hydrogen carrier and the inert insulator, wherein the applied heat results in the generation of hydrogen from the hydrogen carrier, and an outlet configured to release the generated hydrogen. To purify hydrogen, the system includes a primary inlet to receive a starting material and an ammonia filtration subassembly, which may include an absorption column configured to absorb the ammonia into water for providing purified hydrogen at a first purity level. The ammonia filtration subassembly may also include an adsorbent member configured to adsorb ammonia from the starting material into an adsorbent for providing purified hydrogen at a second purity level.
Varma; Arvind (West Lafayette, IN), Hwang; Hyun Tae (West Lafayette, IN), Al-Kukhun; Ahmad (Beaverton, OR)
Purdue Research Foundation (West Lafayette, IN)
14/ 342,261
September 2, 2012
This invention was made with government support under DE-FG36-06GO86050 awarded by the Department of Energy. The government has certain rights in the invention.