Reactions Fischer Tropsch synthesis

Ma, W.P., Jacobs, G., Sparks, D.E., Spicer, R.L., Graham, U.M., and Davis, B. H. 2008. Comparison of the kinetics of the Fischer-Tropsch synthesis reaction between structured alumina supported cobalt catalysts with different pore size. Prepr. Am. Chem. Soc. Div. Petro. Chem. 53 99-102. (see Chapter 8 of this book.)... 

The resulting synthesis gas can subsequently be converted into methanol (Reaction 3) or polymerized to a mixture of hydrocarbons via the Fischer-Tropsch synthesis (Reaction 4) [37, 38]. These conversions usually require a H2/CO molar ratio close to 2 (Reactions 3 and 4), which contrasts with the H2/CO ratio of 0.5 that is delivered upon biomass gasification (Reaction 2). It can therefore be suitable to adjust the H2/CO ratio through the water-gas shift reaction (Reaction 5) ... 

R.S. Dinit, L.L. Tavlaridis, Integral method of analysis of Fischer-Tropsch synthesis reactions in a catalyst pellet, Chem. Eng. Sci. 37 (1982) 539. 

Finally, we note the commercially important Fischer-Tropsch synthesis reaction for gasoline manufacture, mentioned in Section I.B. The reaction formula may be written... 

Davis, B.H. Fischer-Tropsch synthesis Reaction mechanisms for iron catalysts. Catalysis Today, 2009, 141 (1-2), 25. 

Fischer-Tropsch synthesis reactions were performed in a slurry CSTR with a reactor volume of 1 liter. The catalyst samples were reduced at 623K for 10 hours (H2 He = 1 2) ex-situ in a flow reactor prior to reaction. The process conditions used in this study were HaiCO = 2.0, T = 220°C, P = 275 psig and SV = 5 SL/h gcat- Syngas conversion levels were determined by on-line gas sampling. Further details of the experimental conditions and reactor operation can be found in ref. 4. 

The early work at Mellon concentrated on the Fischer-Tropsch synthesis reaction and was stimulated by a national concern for the dwindling supplies of petroleum, a concern which has stimulated the resurgence of interest in the Fischer-Tropsch synthesis in recent years. In carrying out this work. Professor Emmett introduced a new and important technique for the study of the mechanism of catalytic reactions. This was the use of... 

Because cobalt catalysts display little activity for the water-gas-shift reaction, the amount of water present in the reactor during the Fischer-Tropsch synthesis reaction will be directly related to the CO conversion. It is therefore important to determine the impact of water partial pressure on the kinetics of the reaction, as well as the chemical and structural changes of the catalyst. The effects of water on both unpromoted and Re-promoted C0/AI2O3 catalysts were investigated by Holmen et al. [1-3]. They found that catalysts deactivate when water was added during FT synthesis. They also reported that catalysts oxidize... 

Fischer-Tropsch synthesis reaction Is a catalyzed chemical reaction in which synthesis gas, a mixture of carbon monoxide and hydrogen, is converted into liquid hydrocarbons of... 

Fan L, Yokota K, Fujimoto K Characterization of mass-transfer in superoitical-phase Fischer-Tropsch synthesis reaction. Top Catal 2 267—283, 1995. 

This case occurs rarely. It usually happens at the cases of considerably small catalyst particles, less external mass transfer coefficient and relative large reaction rate constant. This will happen when the porousless netlike materials are used for catalyst as platinum-net for ammonia oxidation, or thin layer distribution of active component at external surface of catalysts. Besides, it is commonly considered that Fischer-Tropsch synthesis reaction to produce hydrocarbons is also controlled by external diffusion on iron catalysts. 

K Yokota, K Fujimoto. Supercritical phase Fischer-Tropsch synthesis reaction. Fuel 68 255-256, 1989. 

K Yokota, Y Hanakata, K Fujimoto. Supercritical phase Fischer-Tropsch synthesis reaction. In A Holmen, K-J Jens, S Kolboe, eds. Studies in Surface Science and Catalysis. Vol. 61. Natural Gas Conversion. Amsterdam Elsevier, 1991, pp 289-295. 

The production of fuels via Fischer—Tropsch (FT) involves the conversion of the feedstock to synthesis gas (carbon monoxide and hydrogen) and subsequent synthesis of hydrocarbons via the Fischer—Tropsch synthesis reaction ... 

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