Cobalt-based catalysts for the production of C/sub 2/-C/sub 4/ hydrocarbons from syn(thesis) gas
A total of 12 catalysts, including a 100 Co/10 Cu/13 ThO/sub 2//200 kieselguhr reference catalyst, 100 Co/10 Cr/200 kieselguhr, 100 Co/3.7 Zr/200 kieselguhr, and eight Co-Mn catalysts, with 100:5, 100:10, and 100:50 cobalt-manganese ratios, prepared by impregnation of kieselguhr or alumina by metal nitrates, some of which contained various small amounts of K/sub 2/O, were screened in a Berty internally recycled catalytic reactor at 193/sup 0/-370/sup 0/C, 100 psig, and 1:3:6 CO-H/sub 2/-He feed composition. Chromium- and zirconium-doped catalysts were the most active for CO conversion (25 and 18.5%) but also the most selective for methane (n; 99.9%). At low temperatures, e.g., 219/sup 0/C, the yield of C/sub 2/-C/sub 3/ olefins was n; 32% of the gaseous products, but it rapidly decreased to almost zero at higher temperatures (over 238/sup 0/C). The Co-Mn catalysts containing K/sub 2/O showed higher selectivities for olefins (up to 37.6% by wt) but low activities. The 100 Co/50 Mn/400 Al/sub 2/O/sub 3//5.5 K/sub 2/O catalyst seems to be the most promising for an economic coal-based Fischer-Tropsch process. Future studies will include alumina-supported, K/sub 2/O-doped Fe-Co, Fe-Mn, and Fe-Mn-Co. Diagrams, tables, graphs, and 12 references.
- Research Organization:
- Carnegie-Mellon Univ., Pittsburgh, PA
- OSTI ID:
- 6015651
- Journal Information:
- ACS Symp. Ser.; (United States), Vol. 23:2
- Country of Publication:
- United States
- Language:
- English
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01 COAL, LIGNITE, AND PEAT
CATALYSTS
COMPARATIVE EVALUATIONS
HYDROCARBONS
CHEMICAL PREPARATION
SYNTHESIS GAS
CHEMICAL REACTIONS
ALKENES
CARBON MONOXIDE
CHROMIUM
COBALT
COBALT OXIDES
DIATOMACEOUS EARTH
DOPED MATERIALS
HELIUM
HIGH TEMPERATURE
HYDROGEN
MANGANESE
MEDIUM PRESSURE
METHANE
THORIUM OXIDES
ZIRCONIUM
ACTINIDE COMPOUNDS
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COBALT COMPOUNDS
ELEMENTS
FLUIDS
GASES
MATERIALS
METALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
SYNTHESIS
THORIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)
010404 - Coal
Lignite
& Peat- Gasification