It is a further object to provide an improved alumina containing FCC catalyst composition which can tolerate {HEAD ~ large quantities} of {TAIL ~ nickel} without producing unacceptable quantities of coke and hydrogen 
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It is a further object to provide an improved alumina containing FCC catalyst composition which can tolerate { HEAD ~ large quantities } of { TAIL ~ nickel } without producing unacceptable quantities of coke and hydrogen
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH