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Bulk synthesis of nanoporous palladium and platinum powders

United States Patent

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8,696,787
April 15, 2014
View the Complete Patent at the US Patent & Trademark Office
Disclosed is a method for providing nanoporous palladium and platinum powders. These materials were synthesized on milligram to gram scales by chemical reduction of tetrahalo-complexes with ascorbate in a concentrated aqueous surfactant at temperatures between -20.degree. C. and 30.degree. C. The prepared particles have diameters of approximately 50 nm, wherein each particle is perforated by pores having diameters of approximately 3 nm, as determined by electron tomography. These materials are of potential value for hydrogen and electrical charge storage applications.
13/ 417,876
March 12, 2012
75/371 977/896
B22F 9/24 (20060101)B82Y 40/00 (20110101)
STATEMENT OF GOVERNMENT INTEREST The United States Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy to Sandia Corporation.