Title:
FISCHER-TROPSCH CATALYST ENHANCEMENT
Document Type and Number:
WIPO Patent Application WO2002020438
Kind Code:
A3
Abstract:
A process of enhancing both the activity and the methane selectivity of a particulate Dispersed Active Metal ("DAM") hydrogenation catalyst is disclosed wherein the DAM undergoes low temperature oxidation in a slurry phase to form a stable, unique oxidized catalyst precursor that is subsequently reduced to form an enhanced catalyst by treatment with hydrogen-containing gas at elevated temperature, wherein one or more promoter metal oxides of chromium, lanthanum and manganese are added to the DAM. Precursors of the promoter metal oxides may be combined with the DAMs prior to or during formation of the initial slurry, during the oxidation step or between recovery of the oxidized catalyst precursor and treatment of it with hydrogen-containing gas to reactivate the catalyst. Conversion of the precursors to the promoter metal oxides is carried out prior to the treatment with hydrogen-containing gas unless said treatment itself produces the conversion.
Inventors:
LAPIDUS ALBERT L VOVICH
KRYLOVA ALLA JURIEVNA
SINEVA LILIA VADIMOVNA
KOVEAL RUSSELL JOHN
DAAGE MICHAEL A
KRYLOVA ALLA JURIEVNA
SINEVA LILIA VADIMOVNA
KOVEAL RUSSELL JOHN
DAAGE MICHAEL A
Application Number:
PCT/US2001/025157
Publication Date:
June 06, 2002
Filing Date:
August 10, 2001
Export Citation:
Assignee:
EXXONMOBIL RES & ENG CO (US)
International Classes:
B01J25/00; B01J37/12; C10G2/00; (IPC1-7): B01J25/00; C10G2/00
Domestic Patent References:
| WO2000027525A1 | 2000-05-18 |
Foreign References:
| GB2117400A | 1983-10-12 | |||
| US3939097A | 1976-02-17 | |||
| US4176092A | 1979-11-27 | |||
| DE2530818A1 | 1977-01-27 |
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