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