Catalytic cracking catalysts which contain {HEAD ~ bayerite} and eta alumina are used to process {TAIL ~ hydrocarbon feedstocks} that contain nickel 
Catalytic cracking catalysts which contain { HEAD ~ bayerite } and eta alumina are used to process { TAIL ~ hydrocarbon feedstocks } that contain nickel
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH