A method for preparing {HEAD ~ a palladium gold alloy gas separation membrane system} comprising {TAIL ~ a gold palladium alloy membrane} on a porous substrate coated with an intermetallic diffusion barrier 
comprising
A method for preparing { HEAD ~ a palladium gold alloy gas separation membrane system } comprising { TAIL ~ a gold palladium alloy membrane } on a porous substrate coated with an intermetallic diffusion barrier
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH