Claims
- 1. A process for producing aromatic hydrocarbons which comprises contacting at least one type of hydrocarbon selected from paraffin, olefin, acetylene, cyclic paraffin and cyclic olefin-based hydrocarbons with a catatlyst comprising zeolite L treated with a halogen-containing compound and platinum, said catalyst having been formed by treating zeolite L with said halogen-containing compound to form a halogen-treated zeolite L and then depositing platinum thereon.
- 2. The process as claimed in claim 1, wherein the halogen-containing compound is a fluorine-containing compound.
- 3. The process as claimed in claim 1, wherein the halogen-containing compound is a chlorine-containing compound.
- 4. The process as claimed in claim 1, wherein the amount of platinum deposited is 0.1 to 5.0 wt % based on the total weight of the catalyst.
- 5. The process as claimed in claim 1, wherein contacting the hydrocarbon with the catalyst is carried out under the conditions of temperature 350.degree.-600.degree. C., pressure 0-40 kg/cm.sup.2 G and liquid hourly space velocity 0.1-20 hr.sup.-1.
- 6. The process as claimed in claim 1, wherein said halogen-containing compound is a fluorinated hydrocarbon.
- 7. The process as claimed in claim 1, wherein said halogen-containing compound is a chlorinated hydrocarbon.
- 8. The process as claimed in claim 1, wherein said halogen-containing compound is a fluorinated chlorinated hydrocarbon.
- 9. The process as claimed in claim 1, wherein said halogen-containing compound is fluorene.
- 10. The process as claimed in claim 1, wherein said halogen-containing compound is CFCl.sub.3, CF.sub.2. Cl.sub.2 CF.sub.3 Cl, CHFCl2, CHF.sub.2 Cl, CHF.sub.3, CF.sub.4, CF.sub.2 ClCFCl.sub.2 and CF.sub.2 ClCF.sub.2 Cl.
- 11. The process as claimed in claim 1, wherein said halogen-containing compound is CCl.sub.4, CHCl.sub.3, CH.sub.2 Cl.sub.2, C.sub.2 Cl.sub.6, C.sub.2 H.sub.2 Cl.sub.4 amd C.sub.2 H.sub.4 Cl.sub.2.
- 12. The process as claimed in claim 1, wherein the amount platinum deposited is 0.3 to 1.5 wt % based on the total weight of the catalyst.
- 13. The process as claimed in claim 9, wherein said zeolite L which has been treated with said halogen-containing compound is then immersed in a solution of tetraamineplatinum chloride and from 0.3 to 1.5 wt % of platinum based on the total weight of the catalyst is deposited thereon.
- 14. The process as claimed in claim 10, wherein said zeolite L which has been treated with said halogen-containing compound is then immersed in a solution of tetraamineplatinum chloride and from 0.3 to 1.5 wt % of platinum based on the total weight of the catalyst is deposited thereon.
- 15. The process as claimed in claim 11, wherein said zeolite L which has been treated with said halogen-containing compound is then immersed in a solution of tetraammineplatinum chloride and from 0.3 to 1.5 wt % of platinum based on the total weight of the catalyst is deposited thereon.
- 16. The process as claimed in claim 1, wherein said platinum is deposited thereon by immersing said halogen-compound treated catalyst L in a solution having a platinum compound dissolved therein.
Parent Case Info
This is a division of application Ser. No. 856,756 filed Apr. 28, 1986 now U.S. Pat. No. 4,681,865.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
856756 |
Apr 1986 |
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