Disclosed is a process for making middle distillate and lower olefins. The
process includes catalytically cracking a gas oil feedstock within a
riser reactor zone by contacting under suitable catalytic cracking
conditions within the riser reactor zone the gas oil feedstock with a
middle distillate selective cracking catalyst that comprises amorphous
silica alumina and a zeolite to yield a cracked gas oil product and a
spent cracking catalyst. The spent cracking catalyst is regenerated to
yield a regenerated cracking catalyst. Within an intermediate cracking
reactor such as a dense bed reactor zone and under suitable high severity
cracking conditions a gasoline feedstock is contacted with the
regenerated cracking catalyst to yield a cracked gasoline product and a
used regenerated cracking catalyst. The used regenerated cracking
catalyst is utilized as the middle distillate selective catalyst.