Claims
- 1. A hydrocarbon conversion process characterized in that it comprises contacting at catalytic dehydrocyclization conditions, a hydrocarbon charge stock with a catalytic composite comprising a nonacidic zeolite bound within a support matrix, catalytically effective amounts of a Group VIII metal component, and sufficient surface-deposited alkali metal to provide a surface-deposited alkali metal index of at least 10.
- 2. The process of claim 1 further characterized in that the hydrocarbon charge stock comprises C.sub.6 to C.sub.8 nonaromatic hydrocarbons.
- 3. The process of claim 1 further characterized in that the nonacidic zeolite comprises an L-zeolite and the surface-deposited alkali metal comprises potassium.
- 4. The process of claim 1 further characterized in that the support matrix is selected from the group consisting of alumina, silica and mixtures thereof.
- 5. The process of claim 1 further characterized in that the catalytic composite comprises from about 25 to 75 wt. % nonacidic zeolite based on the weight of the zeolite and support matrix.
- 6. The process of claim 1 further characterized in that the Group VIII metal component comprises a platinum component.
- 7. The process of claim 1 further characterized in that the catalytic composite comprises from about 0.01 to about 5.0 wt. % of the Group VIII metal component based on the weight of the zeolite, support matrix, Group VIII metal component and surface-deposited alkali metal.
- 8. The process of claim 1 further characterized in that there is sufficient surface-deposited alkali metal to provide a surface-deposited alkali metal index of from about 40 to about 500.
- 9. A hydrocarbon conversion process characterized in that it comprises contacting at catalytic dehydrocyclization conditions a hydrocarbon charge stock with a catalytic composite comprising an L-zeolite bound within a support matrix comprising alumina, sufficient surface-deposited potassium to provide a surface-deposited alkali metal index of from about 40 to about 500, and from about 0.01 to about 5.0 wt. % of a platinum component based on the weight of the L-zeolite, the support matrix, the platinum component and the surface-deposited potassium.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a division of prior copending application Ser. No. 734,308 filed May 15, 1985, which, in turn, is a continuation-in-part of prior copending U.S. Application No. 668,102, filed Nov. 5, 1984, the contents of which are incorporated herein by reference thereto.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4417083 |
Bernard et al. |
Nov 1983 |
|
4478706 |
Cohen |
Oct 1984 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
734308 |
May 1985 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
668102 |
Nov 1984 |
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