Method for preparing a promoted iron catalyst and catalyst prepared by the method for conversion of synthesis gas to liquid hydrocarbons
US4994428A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Mar 17, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2527/232
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A novel Fischer Tropsch iron catalyst that has unusually high selectivity for liquid hydrocarbons (low selectivity for methane) is provided. The catalyst is prepared by treatment of the usual inactive catalyst precursor with water vapor at elevated temperature either after conventional activation by syngas or concurrently therewith. Surprisingly, the "selectivation" with water vapor does not affect catalytic activity. The novel "selectivated" catalyst may be used to advantage either to increase temperature and throughput, or to increase liquid hydrocarbon selectivity, compared with conventional catalyst that has not been "selectivated".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.