A gas separation device for the removal of carbon oxides from a hydrogen rich gas stream in the form of {HEAD ~ a composite} comprising {TAIL ~ a hydrogen diffusion membrane} and a methanation catalyst 
comprising
A gas separation device for the removal of carbon oxides from a hydrogen rich gas stream in the form of { HEAD ~ a composite } comprising { TAIL ~ a hydrogen diffusion membrane } and a methanation catalyst
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH