Claims
- 1. A shaped hydrocarbon conversion catalyst comprising an alumina having an X-ray powder diffraction pattern such that the ratio of peak intensities at respective two-Θ Bragg angle values of 32.5:34.0 is at least about 1.2 and the ratio of peak intensities at respective two-Θ Bragg angle values of 46.0:45.5 is at most about 1.1.
- 2. The catalyst of claim 1 further comprising at least one platinum group metal dispersed onto the catalyst in an amount from about 0.01 mass-% to about 2.0 mass-% of the catalyst calculated on an elemental basis.
- 3. The catalyst of claim 2 further comprising a metal promoter component selected from the group consisting of tin, germanium, rhenium, gallium, cerium, lanthanum, europium, indium, phosphorus, nickel, iron, tungsten, molybdenum, zinc, cadmium, and mixtures thereof, wherein the metal promoter comprises from about 0.01 mass-% to about 5.0 mass-% of the catalyst calculated on an elemental basis.
- 4. The catalyst of claim 2 further comprising a halogen component present in an amount from about 0.1 mass-% to about 10 mass-% of the catalyst calculated on an elemental basis.
- 5. The catalyst of claim 1 wherein the catalyst has a piece crush strength of greater than about 34 N/mm.
- 6. The catalyst of claim 5 wherein the piece crush strength is greater than about 40 N/mm.
- 7. The catalyst of claim 1 wherein the alumina has a surface area from about 140 m2/gm to about 210 m2/gm.
- 8. The catalyst of claim 7 wherein the surface area is from about 150 m2/gm to about 180 m2/gm.
- 9. The catalyst of claim 1 wherein the shaped catalyst is substantially spherical or substantially cylindrical.
- 10. The catalyst of claim 1 further comprising an alkali or alkaline-earth metal dispersed onto the shaped catalyst in an amount from about 0.01 mass-% to about 5.0 mass-% of the catalyst calculated on an elemental basis.
- 11. A hydrocarbon conversion process comprising contacting a hydrocarbon feedstock with a shaped catalyst at hydrocarbon-conversion conditions to give a converted hydrocarbon, the shaped catalyst comprising an alumina having an X-ray powder diffraction pattern such that the ratio of peak intensities at respective two-Θ Bragg angle values of 32.5:34.0 is at least about 1.2 and the ratio of peak intensities at respective two-Θ Bragg angle values of 46.0:45.5 is at most about 1.1.
- 12. The process of claim 11 wherein the hydrocarbon-conversion conditions include a temperature of from about 40° C. to about 550° C., a pressure of from about atmospheric to about 200 atmospheres absolute and liquid hourly space velocities from about 0.1 to about 100 hr−1.
- 13. The process of claim 11 wherein the catalyst has a piece crush strength of greater than 34 N/mm.
- 14. The process of claim 11 wherein the alumina has a surface area from about 140 m2/gm to about 210 m2/gm.
- 15. The process of claim 14 wherein the hydrocarbon feedstock is a gasoline-range feedstock.
- 16. The process of claim 11 wherein the shaped catalyst further comprises at least one platinum group metal dispersed onto the shaped catalyst in an amount from about 0.01 mass-% to about 2.0 mass-% of the catalyst calculated on an elemental basis.
- 17. The process of claim 16 where the process is a catalytic reforming process.
- 18. The process of claim 11 wherein the shaped catalyst is substantially spherical or substantially cylindrical.
- 19. The process of claim 11 wherein the catalyst further comprises an alkali or alkaline-earth metal dispersed onto the shaped catalyst in an amount from about 0.01 mass-% to about 5.0 mass-% of the catalyst calculated on an elemental basis.
- 20. The process of claim 19 wherein the process is a dehydrogenation process.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of prior application Ser. No. 09/754,677 filed Jan. 4, 2001, now abandoned, which is a continuation-in-part of prior Ser. No. 09/586,829 filed Jun. 5, 2000, now abandoned, the contents of which are incorporated herein by reference.
US Referenced Citations (23)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1020958 |
Nov 1977 |
CA |
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
09/754677 |
Jan 2001 |
US |
Child |
10/154059 |
|
US |
Parent |
09/586829 |
Jun 2000 |
US |
Child |
09/754677 |
|
US |