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High permeance sulfur tolerant Pd/Cu alloy membranes

United States Patent

February 18, 2014
View the Complete Patent at the US Patent & Trademark Office
A method of making a membrane permeable to hydrogen gas (H.sub.2.uparw.) is disclosed. The membrane is made by forming a palladium layer, depositing a layer of copper on the palladium layer, and galvanically displacing a portion of the copper with palladium. The membrane has improved resistance to poisoning by H.sub.2S compared to a palladium membrane. The membrane also has increased permeance of hydrogen gas compared to palladium-copper alloys. The membrane can be annealed at a lower temperature for a shorter amount of time.
Ma; Yi Hua (Worcester, MA), Pomerantz; Natalie (Worcester, MA)
Worcester Polytechnic Institute (Worcester, MA)
13/ 099,688
May 3, 2011
GOVERNMENT SUPPORT This invention was made with government support under grants DE-FC26-07NT43058 and DE-FG26-04NT42194 awarded by the U.S. Department of Energy. The government has certain rights in the invention.