Unsupported Pal adium Al oy Membranes
Sabina K. Gade, Paul Thoen, and J. Douglas Way
Summary: A cost-effective method to produce thin, durable, support-free palladium and
palladium alloy membranes
Description: This work provides a method to produce free-standing palladium (Pd) and Pd alloy
membranes that are thin, permeable to hydrogen, and durable. These membranes have been
tested for as long as 360 hours without an observed increase in leak rates or decreases in
permeability. Single gas testing of the unsupported foils produce hydrogen permeabilies
equivalent to thicker membranes produced by cold-rolling. Defect-free films as thin as 7.2
microns can be fabricated, with ideal hydrogen/nitrogen selectivies as high as 40,000.
Homogeneous membrane compositions may also be produced using these methods.
Main Advantages of this Invention
 Thin membranes that are capable of selectively transporting hydrogen in the absence of
support media
 Capable of withstanding temperatures and pressure cycles encountered in typical
 Well-controlled, efficient, and economic
production method
Potential Areas of Application
 Fuel cells
 Hydrogen production
ID number: 8002
Intel ectual Property Status: US 9,004,715
Opportunity: We are seeking an exclusive or
Pure hydrogen flux as a function of inverse thickness
non-exclusive licensee for marketing,
For pure Pd membranes at 673 K with 220 kPa feed
manufacturing, and sale of this technology.
For more information contact:
William Vaughan, Director of Technology Transfer
Colorado School of Mines, 1500 Illinois Street, Guggenheim Hall Suite 314, Golden, CO 80401
Phone: 303-384-2555; e-mail: wvaughan@mines.edu