{HEAD ~ These oxides} can either be coupled to {TAIL ~ the zeolite} by being directly deposited on the zeolite or mechanically mixed with the zeolite 
coupled to
{ HEAD ~ These oxides } can either be coupled to { TAIL ~ the zeolite } by being directly deposited on the zeolite or mechanically mixed with the zeolite
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH