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