Conversion of synthesis gas to liquid hydrocarbons
US4978689A · kind A · utility
22Cited by
4References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 17, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Mar 17, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/745
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The medium pressure Fischer-Tropsch synthesis of liquid hydrocarbons conducted with an iron catalyst is made more efficient by temporarily suspending conventional synthesis and treating the catalyst with a high partial pressure of water vapor, after which conventional synthesis is resumed. The treatment inparts a large increase in selectivity for liquids with reduction of methane formation. The treatment is very effective with alkali (e.g. potassium) promoted precipitated iron catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.