{HEAD ~ The palladium} based {TAIL ~ three way catalyst} is carried on a substrate, which may be the trapping material, in an amount of between about 100 500 g palladium/ft3 of substrate 
based
{ HEAD ~ The palladium } based { TAIL ~ three way catalyst } is carried on a substrate , which may be the trapping material , in an amount of between about 100 500 g palladium / ft3 of substrate
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH