Claims
- 1. A process for producing aromatic hydrocarbons which comprises contacting under conversion conditions, a gaseous hydrocarbon feedstream of C.sub.2 to C.sub.12 hydrocarbons containing a high content of propane, with a catalyst consisting essentially of zinc and gallium and a crystalline zeolite characterized by a constraint index within the approximate range of 1 to 12 and a silica to alumina ratio of at least 12, the weight of gallium in said catalyst being between about 0.01 and about 2 percent based on the total weight of catalyst whereby propane present in said gaseous feed is converted to aromatic compounds, and recovering said aromatic compounds as liquids.
- 2. The process of claim 1 wherein the conversion conditions include a temperature of from about 427.degree. C. to about 760.degree. C., a pressure of from about 1.times.10.sup.5 to about 28.6.times.10.sup.5 pascal and a WHSV of from about 0.1 to about 10.
- 3. The process of claim 1 wherein said crystalline zeolite is selected from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38, and ZSM-48.
- 4. The process of claim 3 wherein said zeolite is an acid form.
- 5. The process of claim 4 wherein said zeolite is a HZSM-5 zeolite.
- 6. The process of claim 1 wherein said zeolite is ZSM-5.
- 7. The process of claim 1 wherein said zeolite is ZSM-11.
- 8. The process of claim 1 wherein said zeolite is ZSM-12.
- 9. The process of claim 1 wherein said zeolite is ZSM-23.
- 10. The process of claim 1 wherein said zeolite is ZSM-35.
- 11. The process of claim 1 wherein said zeolite is ZSM-38.
- 12. The process of claim 1 wherein said zeolite is ZSM-48.
- 13. The process of claim 1 wherein the concentration of gallium in said catalyst is between about 0.01 and about 1 percent by weight.
- 14. The process of claim 1 wherein said catalyst composition is composited with a porous matrix material in a proportion of between about 1 to about 99 percent by weight of catalyst composition in the dry composite.
- 15. The process of claim 1 wherein said catalyst composition is composited with a porous matrix material in a proportion of between about 5 to 80 percent by weight of catalyst composition in the dry composite.
- 16. The process of claim 1 wherein the conversion conditions include a temperature of from about 510.degree. C. to about 677.degree. C., a pressure from about 1.times.10.sup.5 to about 7.9.times.10.sup.5 pascal and a WHSV of from about 0.2 to about 2.
- 17. The process of claim 1 wherein the weight of gallium in said catalyst is between about 0.1 and about 1 percent, said zeolite is ZSM-5, the weight of zinc is between 0.99 and about 5 percent, said catalyst is composited with a porous matrix material in a proportion of between about 5 and about 80 percent by weight of catalyst composition in the dry composite, and conversion conditions include a temperature of from about 510.degree. C. to about 677.degree. C., a pressure of from about 1.times.10.sup.5 to about 28.6.times.10.sup.5 pascal and a WHSV of about 0.2 to about 2.
Parent Case Info
This is a continuation-in-part of our pending U.S. application Ser. No. 417,822 filed Sept. 13, 1982, now abandoned, which is a division of application Ser. No. 262,280, filed May 11, 1981, now U.S. Pat. No. 4,392,989--both of which applications are incorporated herein by reference.
US Referenced Citations (9)
Divisions (1)
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Number |
Date |
Country |
Parent |
262280 |
May 1981 |
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Continuation in Parts (1)
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Number |
Date |
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417822 |
Sep 1982 |
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