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- W2004049148 abstract "The paper presents a transient kinetic analysis of the Fischer–Tropsch synthesis reaction using the SSITKA technique in combination with a gas-chromatograph-mass-spectrometer (GCMS) analysis of the 13C-labeled and 18O-labeled hydrocarbon and alcohol reaction products. Experiments are performed on a Co/Ru/TiO2 catalyst and a fully metallic Co-sponge model catalyst at 498K and 1.2 bar. The experimental results are discussed in a qualitative way to obtain mechanistic information. The Co-sponge catalyst is used to study alcohol formation, since the TiO2 support disturbs the measurements on the Co/Ru/TiO2 catalyst. The formation of hydrocarbons proceeds via a two-pool mechanism, where two carbon pools contribute to methane formation and C–C coupling. Paraffins and olefins are both primary products, but the GCMS analysis demonstrates that readsorption of 1-olefins is an important step. The readsorption of iso- and 2-olefins is shown to be of less importance. The steady-state performance of the catalyst indicates the presence of a physisorbed hydrocarbon layer, even under process conditions where no wax build-up in the catalyst pores occurs. Although the Anderson–Schulz–Flory distribution gives rise to assume chain-length independence of the surface reactions starting at C3, this does not hold when discrimination between the paraffins and the olefins is made. Alcohol formation can be considered as a termination reaction that occurs via a CO insertion or a CHxO insertion mechanism." @default.
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- W2004049148 date "2001-02-01" @default.
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- W2004049148 title "Steady-state isotopic transient kinetic analysis of the Fischer–Tropsch synthesis reaction over cobalt-based catalysts" @default.
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- W2004049148 doi "https://doi.org/10.1016/s0009-2509(00)00342-0" @default.
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