Slurry phase Fischer-Tropsch synthesis: Cobalt plus a water-gas shift catalyst

Technical Report · Mon Jan 01 00:00:00 EST 1990

DOI:https://doi.org/10.2172/6873535· OSTI ID:6873535

Yates, I C; Satterfield, C N

Experiments on cobalt-catalyzed reactions of light 1-alkenes added to synthesis gas were performed. Data have been collected at 220C, 0.45 to 1.48 MPa and a synthesis gas flow rate between 0.015 and 0.030 Nl/(gcat[center dot]min) with H[sub 2]/CO of 1.45 to 2.25. Ethylene, propene, and butene were added to synthesis gas feed from 0.5 to 1.2 mole% of total feed. For each material balance in which 1-alkenes were added, a material balance was performed at similar process conditions without 1-alkenes added, as base case''. Material balances without added 1-alkenes were also repeated to verify of catalyst selectivity stability. 49 material balances were performed during a single run lasting over 2,500 hours-on-stream. The hydrocarbon data have been completely analyzed; data correlations are still being made. Since C[sub 3]/C[sub 1] ratios by ethene addition, C[sub 4]/C[sub 1] ratios by propene addition, and C[sub 5]/C[sub 1] ratios by 1-butene addition, it appears that 1-alkenes may incorporate into growing chains on the surface of the catalyst. Further evidence for incorporation can be seen by comparing selectivity to n-alcohol one carbon number higher than added 1-alkene. Yield of this n-alcohol increases when alkenes are present. Sensitivity of hydrocarbon distribution to process variables seems to be greater on Co than on Fe catalysts.

• Research Organization: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-87PC79816
• OSTI ID: 6873535
• Report Number(s): DOE/PC/79816-9; ON: DE93006473
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
COBALT
CATALYTIC EFFECTS
FISCHER-TROPSCH SYNTHESIS
CATALYSIS
HYDROCARBONS
SYNTHESIS
ADDITIVES
ALKENES
CATALYSTS
MATERIAL BALANCE
PROGRESS REPORT
SLURRIES
SYNTHESIS GAS
CHEMICAL REACTIONS
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
FLUIDS
GASES
METALS
MIXTURES
ORGANIC COMPOUNDS
SUSPENSIONS
TRANSITION ELEMENTS
100200* - Synthetic Fuels- Production- (1990-)