Claims
- 1. A process for the catalytic cracking of a hydrocarbon feedstock which comprises contacting said feedstock under catalytic cracking conditions with a cracking catalyst composition comprising discrete particles of ultra-stable Y zeolite and discrete particles of alumina, which particles are dispersed in a porous oxide matrix to produce a catalyst containing 5-40 wt.% ultra-stable Y zeolite, 5-40 wt.% alumina and 40-90 wt.% of porous oxide matrix.
- 2. The process of claim 1 wherein said porous oxide matrix comprises silica-alumina gel.
- 3. The process of claim 2 wherein said ultra-stable Y zeolite contains less than 1 wt.% Na.sub.2 O.
- 4. The process of claim 3 wherein said ultra-stable Y zeolite contains less than 1% rare earth metal ions and has a unit cell size less than 24.40 A.
- 5. The process of claim 4 wherein said catalyst comprises 10-30 wt.% ultra-stable Y zeolite, 10-30 wt.% alumina and 50-80 wt.% silica-alumina gel.
- 6. A process for the catalytic cracking of a hydrocarbon feedstock which comprises contacting said feedstock under catalytic cracking conditions with a cracking catalyst composition comprising discrete particles of ultra-stable Y zeolite containing less than 1 wt.% Na.sub.2 O and discrete particles of alumina, which particles are dispersed in silica-alumina gel to produce a catalyst containing 5-40 wt.% ultra-stable Y zeolite, 5-40 wt.% alumina and 40-90 wt.% silica-alumina gel.
- 7. The process of claim 6 wherein the temperature at which said feedstock is catalytically cracked ranges between about 850.degree. to 1050.degree. F.
- 8. The process of claim 7 wherein the pressure at which said feedstock is catalytically cracked ranges between 0 and 50 psig.
- 9. The process of claim 8 wherein the feed rate of said feedstock ranges between 1 to 200 W/Hr/W.
- 10. The process of claim 9 wherein said catalyst is regenerated at a temperature ranging between 1100.degree. and 1500.degree. F.
- 11. The process of claim 9 wherein said catalyst is regenerated at a temperature ranging between 1175.degree. and 1350.degree. F.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a division of application Ser. No. 80,146 filed Sept. 28, 1979 (now U.S. Pat. No. 4,259,212) which is a continuation-in-part of Ser. No. 913,480 filed June 7, 1978, and now abandoned.
US Referenced Citations (11)
Divisions (1)
|
Number |
Date |
Country |
Parent |
80146 |
Sep 1979 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
913480 |
Jun 1978 |
|