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Fischer–Tropsch synthesis in microchannels - …

[3] J. Schulz, "Short History and Present Trends of Fischer-Tropsch Synthesis," Appl. Catal. A 186, 3 (1999).

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The product distribution in Fischer–Tropsch synthesis: …

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[6] Dry, M.E.

AB - Fischer-Tropsch synthesis (FTS) over unsupported coprecipitated cobalt catalysts in n-decane in a batch slurry phase reactor by adding water vapor (H2O/CO=0.12 in molar ratio) prior to reaction has been studied. The addition of water vapor exhibits a marked effect on the product selectivity. In the absence of water, the carbon number distribution of FT products follows the classical Anderson-Schulz-Flory (ASF) pattern resulting in a low selectivity (32%) in the desired C10+ hydrocarbons. In contrast, with the promotion of water vapor, the formation of heavy products is appreciably increased up to 87.3% in C10+ hydrocarbons so that the selectivity in the range of C8-C30 increases obviously along with an increase in carbon number (n), which leads to a substantial deviation from ASF pattern. The effect of water is explained by suppressing secondary hydrogenation of 1-olefins and facilitating their readsorption and chain growth.

Fischer−Tropsch Synthesis Using H2/CO/CO2 Syngas …

N2 - Fischer-Tropsch synthesis (FTS) over unsupported coprecipitated cobalt catalysts in n-decane in a batch slurry phase reactor by adding water vapor (H2O/CO=0.12 in molar ratio) prior to reaction has been studied. The addition of water vapor exhibits a marked effect on the product selectivity. In the absence of water, the carbon number distribution of FT products follows the classical Anderson-Schulz-Flory (ASF) pattern resulting in a low selectivity (32%) in the desired C10+ hydrocarbons. In contrast, with the promotion of water vapor, the formation of heavy products is appreciably increased up to 87.3% in C10+ hydrocarbons so that the selectivity in the range of C8-C30 increases obviously along with an increase in carbon number (n), which leads to a substantial deviation from ASF pattern. The effect of water is explained by suppressing secondary hydrogenation of 1-olefins and facilitating their readsorption and chain growth.

Fishbein, Fairfax, Virginia, USA Published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organisation, and the World Health Organization, and produced within the framework of the Inter-Organization Programme for the Sound Management of Chemicals.

The effect of CO2 on Fischer−Tropsch synthesis (FTS) ..

Fischer-Tropsch synthesis (FTS) over unsupported coprecipitated cobalt catalysts in n-decane in a batch slurry phase reactor by adding water vapor (H2O/CO=0.12 in molar ratio) prior to reaction has been studied. The addition of water vapor exhibits a marked effect on the product selectivity. In the absence of water, the carbon number distribution of FT products follows the classical Anderson-Schulz-Flory (ASF) pattern resulting in a low selectivity (32%) in the desired C10+ hydrocarbons. In contrast, with the promotion of water vapor, the formation of heavy products is appreciably increased up to 87.3% in C10+ hydrocarbons so that the selectivity in the range of C8-C30 increases obviously along with an increase in carbon number (n), which leads to a substantial deviation from ASF pattern. The effect of water is explained by suppressing secondary hydrogenation of 1-olefins and facilitating their readsorption and chain growth.

The most promising method to make them from other carbon resources is the Fischer–Tropsch synthesis (F–T) which gives wide range of product distribution.

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  • The Fischer-Tropsch process is a gas ..

    [8] R. B. Anderson "Physical Chemistry of the Fischer-Tropsch Synthesis," U.S. Bureau of Mines, , 1959.

  • produced in the Fischer-Tropsch synthesis; ..

    “Single-event Microkinetic Model for Fischer-Tropsch Synthesis on Iron-based Catalysts.” 47 (16): 5879–5891.

  • Green Diesel from Biomass via Fischer-Tropsch synthesis: ..

    Single-event microkinetic model for Fischer-Tropsch synthesis on iron-based catalysts.

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Fischer-Tropsch (FT) Process | Chemical Kinetics | …

Because of its fundamental character, the SEMK model developed here can be easily applied to describe Fischer-Tropsch synthesis over other catalysts.}, author = {Lozano Blanco, Gisela and Thybaut, Joris and Surla, K.

1 Fischer-Tropsch (FT) Process ..

[11] O. R. Inderwildi, S. J. Jenkins, and D. A. King, "Fischer-Tropsch Mechanism Revisted: Alternative Pathways for the Production of Higher Hydrocarbons from Synthesis Gas," J. Phys. Chem. C 112, 1305 (2008).

Fischer-Tropsch synthesis.3 shows the application ranges for iron ..

SiO2- and Al2O3-supported Co2C catalysts were prepared by carburizing supported Co precursors with CO. The catalysts were characterized by N2 physisorption, X-ray diffraction and H2 temperature-programmed reduction techniques, and evaluated by the Fischer-Tropsch (F-T) reaction. The results showed that SiO2- and Al2O3-supported Co2C catalysts could be successfully obtained but sufficient carburization time was required. All of the as-prepared supported Co2C catalysts exhibited activity and selectivity towards alcohols. It is considered that surface metallic Co species contributed to the activity, surface Co2C species were responsible for the formation of alcohols, and bulk Co2C species were inert during the F-T reaction.

Fischer–Tropsch Synthesis: Effect of Start-Up Solvent in …

A modular multichannel reaction module with microchannel-based coolant channels was considered, and a computational fluid dynamics (CFD) model was developed to describe the hydrodynamic behavior of the module. Reaction rates for the lumped chain length distribution of hydrocarbon products generated by the Fischer–Tropsch synthesis reaction were proposed, and the developed kinetic and CFD models were shown to satisfactorily fit the experimental data under different production rates. High heat transfer rates resulting from the use of microchannel-based cooling channel maintained the temperature peak below 10 °C, and simulation results with increased size of the catalytic bed and absence of inert materials showed that the high heat of reactions could be efficiently removed over entire catalytic beds, preventing the creation of local hot spots, which are usually observed in conventional fixed bed reactors. In addition, the efficient use of thermal energy could guarantee that methane selectivity, which needs to be maintained as low as possible, was close to approximately 10% under all conditions, while the selectivity of the desired hydrocarbons (C5+) slightly increased with increasing feed flow rates.

were studied during Fischer-Tropsch synthesis using a CSTR

Fischer-Tropsch synthesis has been chosen as the base conversion method for syngas to liquid fuels. While Fischer-Tropsch plants are traditionally very large, the low geographical density of the biomass feedstock necessitates a shift from a traditional economies of scale approach. In this research a sawmill integrated polygeneration scenario is proposed that recognises the synergy between the heat and electrical requirements of a mill and the Fischer-Tropsch process that can supply both as well as liquid fuels. Techno-economic modelling of variations to this polygeneration arrangement were performed using a traditional Fischer-Tropsch slurry reactor as the basis. The breakeven price of syncrude produced in the process based on a 30 year plant life and 10% discount factor was as low as $US 167 per barrel.

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