{TAIL ~ The catalyst} 7 in which {HEAD ~ the catalytically active metal comprises} platinum, palladium, and rhodium 
{ TAIL ~ The catalyst } 7 in which { HEAD ~ the catalytically active metal comprises } platinum , palladium , and rhodium
TAIL TAIL TAIL TAIL TAIL TAIL OTH REL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH