Claims
- 1. A catalytic process for the production of a hydrocarbon mixture having a higher percentage of paraffinic and olefinic hydrocarbons than aromatic hydrocarbons, comprising:
- providing a gas mixture of hydrogen and carbon monoxide having a molar ratio of hydrogen to carbon monoxide which is greater than about 1.9;
- reacting the gas mixture at elevated pressure and temperature in contact with a trifunctional catalyst mixture consisting essentially of a first Fischer-Tropsch catalyst having catalytic activity for converting hydrogen and carbon monoxide reactants into hydrocarbons, a second catalyst having catalytic activity for the conversion of methanol into hydrocarbons, and a third catalyst having catalytic activity for the water-gas shift reaction and the methanol synthesis reaction;
- to produce a hydrocarbon mixture boiling in the gasoline and diesel range, said trifunctional catalyst having a relative proportion of said first catalyst to said second and third catalysts effective to provide said hydrocarbon mixture having a higher percentage of paraffinic and olefinic hydrocarbons than aromatic hydrocarbons.
- 2. The process as set forth in claim 1, in which the process is conducted in a single reactor, and wherein the components of the trifunctional catalyst are in intimate admixture.
- 3. The process as set forth in claim 1, wherein the Fischer-Tropsch catalyst is an iron or cobalt catalyst.
- 4. The process as set forth in claim 3, wherein the Fischer-Tropsch catalyst is a potassium-promoted fused iron oxide catalyst.
- 5. The process as set forth in claim 3, wherein the methanol conversion catalyst is a crystalline aluminosilicate or a crystalline silicate.
- 6. The process as set forth in claim 5, wherein the methanol conversion catalyst is a synthetic crystalline zeolite ZSM-5 or silicalite catalyst.
- 7. The process as set forth in claim 5, wherein the water gas shift and methanol synthesis catalyst is an oxide of one or more of (i) zinc and (ii) copper.
- 8. The process as set forth in claim 7, wherein the water gas shift and methanol synthesis catalyst is a Cu-Zn-O catalyst which is reduced to remove a substantial portion of the oxides.
- 9. The process as set forth in claim 7 in which the molar ratio of hydrogen to carbon monoxide is at least 2.0 and less than 3.
- 10. The process as set forth in claim 7 in which the molar ratio of hydrogen to carbon monoxide is at least 2.0 and less than 2.5.
- 11. The process as set forth in claim 7 in which the reaction is conducted at a temperature in the range of 200.degree. to 400.degree. C. and at a pressure greater than 200 psig.
- 12. The process as set forth in claim 7 in which the reaction is conducted at a temperature in the range of 220.degree. to 360.degree. C. and at a pressure greater than 200 psig.
- 13. The process as set forth in claim 7 in which the reaction is conducted at a temperature in the range 200.degree. to 240.degree. C. and at a pressure greater than 500 psig.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of application Ser. No. 07/795,153 filed Nov. 20, 1991 which is a continuation application of application Ser. No. 07/606,755, filed Oct. 31, 1990 both now abandoned.
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4096163 |
Chang et al. |
Jun 1978 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
606755 |
Oct 1990 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
795153 |
Nov 1991 |
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