Preferably, however, one of the streams is passed through a palladium membrane to diffuse out {HEAD ~ the H2} to enrich {TAIL ~ the CO} for use in the formate synthesis 
to enrich
Preferably , however , one of the streams is passed through a palladium membrane to diffuse out { HEAD ~ the H2 } to enrich { TAIL ~ the CO } for use in the formate synthesis
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH