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Durable pd-based alloy and hydrogen generation membrane thereof

Patent ·
OSTI ID:1014383
 [1];  [2];  [2]
  1. Madison, CT
  2. Glastonbury, CT
+ Show Author Affiliations
A durable Pd-based alloy is used for a H.sub.2-selective membrane in a hydrogen generator, as in the fuel processor of a fuel cell plant. The Pd-based alloy includes Cu as a binary element, and further includes "X", where "X" comprises at least one metal from group "M" that is BCC and acts to stabilize the .beta. BCC phase for stability during operating temperatures. The metal from group "M" is selected from the group consisting of Fe, Cr, Nb, Ta, V, Mo, and W, with Nb and Ta being most preferred. "X" may further comprise at least one metal from a group "N" that is non-BCC, preferably FCC, that enhances other properties of the membrane, such as ductility. The metal from group "N" is selected from the group consisting of Ag, Au, Re, Ru, Rh, Y, Ce, Ni, Ir, Pt, Co, La and In. The at. % of Pd in the binary Pd--Cu alloy ranges from about 35 at. % to about 55 at. %, and the at. % of "X" in the higher order alloy, based on said binary alloy, is in the range of about 1 at. % to about 15 at. %. The metals are selected according to a novel process.
Research Organization:
UTC Power Corporation (South Windsor, CT)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42453
Assignee:
UTC Power Corporation (South Windsor, CT)
Patent Number(s):
7,655,183
Application Number:
US Patent Application 11/712,200
OSTI ID:
1014383
Country of Publication:
United States
Language:
English

References (3)

Effect of hydrogen-sulfide on the hydrogen permeance of palladium?copper alloys at elevated temperatures journal October 2004
Ab initio studies of stepped Pd surfaces with and without S journal April 2003
Palladium/Copper Alloy Composite Membranes for High Temperature Hydrogen Separation from Coal-Derived Gas Streams report July 2001

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