초록 ▼

A supported cobalt-based catalyst, characterized in that the carrier has an average particle diameter, measured by Coulter LS230, ranging from 70 to 250 μm, a surface area higher than 175 m2/g and a pore volume higher than 0.35 cm3/g, measured by the B.E.T. method. The catalyst is particularly usefu

A supported cobalt-based catalyst, characterized in that the carrier has an average particle diameter, measured by Coulter LS230, ranging from 70 to 250 μm, a surface area higher than 175 m2/g and a pore volume higher than 0.35 cm3/g, measured by the B.E.T. method. The catalyst is particularly useful in the Fischer-Tropsch reaction.

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1. A process for synthesizing hydrocarbons by a Fischer-Tropsch process, comprising: reacting a mixture of CO and H2in a gas-liquid-solid fluidized reactor in the presence of a supported cobalt-based catalyst comprising cobalt supported on a carrier component, wherein said carrier component consi

1. A process for synthesizing hydrocarbons by a Fischer-Tropsch process, comprising: reacting a mixture of CO and H2in a gas-liquid-solid fluidized reactor in the presence of a supported cobalt-based catalyst comprising cobalt supported on a carrier component, wherein said carrier component consisting of greater than 80% by weight of aluminum oxide and having an average particle diameter, measured by Coulter LS230, ranging from 120 to 180 μm, a surface area greater than 175 m2/g and a pore volume greater than 0.35 cm3/g, measured by the BET method to result in a hydrocarbon product prevalently comprising C5+hydrocarbons. 2. The process of claim 1, wherein the mixture of CO and H2is diluted with CO2and/or N2. 3. The process of claim 1, wherein the reaction is conducted at a temperature ranging from 170 to 400° C. under a pressure ranging from 1 to 100 bars. 4. The process of claim 3, wherein the reaction is conducted at a temperature ranging from 180 to 250° C. and under a pressure of 15 to 40 bars. 5. The process of claim 1, wherein the CO/H2ranging from 0.5/1 to 4/1. 6. The process of claim 5, wherein the CO/H2ratio ranging from 1.7/1 to 2.5/1. 7. The process of claim 1, wherein the fluidized reactor is a slurry bubble column reactor. 8. The process according to claim 1, wherein the catalyst has a pore volume greater than 0.40 cm3/g. 9. The process according to claim 1, wherein the catalyst has a surface area ranging from 185 m2/g to 210 m2/g. 10. The process according to claim 1, wherein the catalyst has an active phase consisting of greater than 80% by weight of cobalt. 11. The process according to claim 1, wherein the active phase of the catalyst contains a promoter selected from the group consisting of K, Na, Mg, Sr, Cu, Mo, Ta, W and metals of Group VIII of the Periodic Table. 12. The process according to claim 1, wherein said carrier contains a structural stability promoter selected from the group consisting of Si, Zr, Ta, Zn, Sn, Mn, Ba, Ca, La and Ce.