Claims
- 1. A method for preparing a monoolefin which comprises reacting in the absence of ammonia and under effective dehydrogenation conditions a mixed gas comprising a paraffin and oxygen with a catalyst consisting of phosphorus oxide and indium oxide.
- 2. The method of claim 1, wherein said paraffin is ethane, propane or butane.
- 3. The method of claim 1, wherein said monoolefin is a C.sub.2, C.sub.3, or C.sub.4 monoolefin.
- 4. The method of claim 1, wherein said mixed gas has a molar ratio of paraffin to oxygen of 1:0.1-1.0.
- 5. The method of claim 1, wherein said catalyst has a P/In atomic ratio of from 0.05 to 4.
- 6. The method of claim 1, wherein the contact between the mixed gas and the catalyst is performed at a temperature of from 200 to 500.degree. C.
- 7. The method of claim 1, wherein the contact between the mixed gas and the catalyst is performed at a pressure of from 1 to 3 bar.
Priority Claims (3)
Number |
Date |
Country |
Kind |
1-295101 |
Nov 1989 |
JPX |
|
1-309098 |
Nov 1989 |
JPX |
|
1-309099 |
Nov 1989 |
JPX |
|
Parent Case Info
This application is a divisional of application Ser. No. 07,610,945 filed Nov. 9, 1990, now U.S. Pat. No. 5,220,090.
US Referenced Citations (15)
Foreign Referenced Citations (2)
Number |
Date |
Country |
189282 |
Jul 1986 |
EPX |
337028 |
Oct 1989 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
610945 |
Nov 1990 |
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