Claims
- 1. A process for preparing acetic acid consisting of contacting methanol with carbon monoxide in the presence of a carbon-supported rhodium catalyst, methyl iodide promoter and water in the vapor phase at a reaction temperature of 180.degree.-220.degree. C., a reaction pressure of 5-10kg/cm.sup.2 .multidot.G and a weight of catalyst to feed gas flow ratio (W/F) of 5-10g.multidot.h/mole, the water being present in an amount of 3 to 50 mol % relative to the methanol.
- 2. A process according to claim 1, wherein the carbon-supported rhodium metal catalyst contains 0.01 to 20% by weight of rhodium metal.
- 3. A process according to claim 1, wherein the carbon-supported rhodium metal catalyst contains 0.1 to 10% by weight of rhodium-metal.
- 4. A process according to claim 1, wherein the carbon-supported rhodium metal catalyst contains 1 to 5% or rhodium metal.
- 5. A process according to claim 1, wherein the amount of methyl iodide used in said process is in the range of 0.1 to 50 moles per 100 moles of methanol.
- 6. A process according to claim 1, wherein the amount of methyl iodide used in said process is in the range 1 to 20 moles per 100 moles of methanol.
- 7. A process according to claim 1, wherein said process be carbon-supported rhodium catalyst contains rhodium metal in an amount of 0.01 to 20% by weight based on the weight of the catalyst, and the amount of methyl iodide used in said process is in the range of 0.1 to 50 moles per 100 moles of methanol.
Priority Claims (2)
Number |
Date |
Country |
Kind |
3-175818 |
Jun 1991 |
JPX |
|
4-177809 |
Jun 1992 |
JPX |
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Parent Case Info
This patent application is a continuation of U.S. patent application Ser. No. 07/901,140, Jun. 19, 1992 now pending.
US Referenced Citations (4)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1277242 |
Jul 1972 |
GBX |
1501892 |
Feb 1978 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Proceedings of the 9th International Catalyst Congress, Fujimoto et al: Effect of Hydrogen On Vapor Phase Carbonylation of Methanol, vol. 3, 1988, pp. 1051-1058. |
Continuations (1)
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Number |
Date |
Country |
Parent |
901140 |
Jun 1992 |
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