Using {HEAD ~ the catalyst preparation procedures} set forth in {TAIL ~ U.S. Pat Nos}. 3,957,689 and 4,458,023, catalysts of the present invention are obtained which are attrition resistant and particularly suited for use in commercial FCC operations 
set forth in
Using { HEAD ~ the catalyst preparation procedures } set forth in { TAIL ~ U.S. Pat Nos } . 3,957,689 and 4,458,023 , catalysts of the present invention are obtained which are attrition resistant and particularly suited for use in commercial FCC operations
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL 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