22. The process of claim 20 wherein said catalytic crack› ing is fluidized catalytic cracking. 

23. The process of claim 20 wherein said additive catalyst is present in amounts of 1 to 50 wt. % relative to the total amount of catalyst. 

24. The process of claim 23 wherein said additive catalyst is present in amounts of 1 to less than 10 wt. % relative to the total amount of catalyst. 

* * * * * 

