Fischer-tropsch process in the presence of a catalyst prepared from a molten salt

A Fischer-Tropsch process for the synthesis of hydrocarbons, wherein the process comprises:

• bringing a feedstock comprising a synthesis gas into contact with at least one catalyst under a total pressure between 0.1 and 15 MPa, at a temperature of between 150 and 350° C., and at an hour space velocity of between 100 and 20 000 volumes of synthesis gas per volume of catalyst and per hour with an H2/CO molar ratio of the synthesis gas between 0.5 and 4,
• wherein said catalyst contains an active phase comprising a porous support consisting of Si, Al and O or Co, Si, Al and O selected from the groups consisting of A12O3·SiO2 and CoAl2O4—Al2O3·SiO2 porous supports,
• wherein said catalyst is prepared by a preparation process consisting of:
• a) bringing said Al2O3·SiO2 or CoAl2O4—Al2O3·SiO2 porous support into contact with a cobalt metal salt, wherein the melting point of said cobalt metal salt is between 30 and 150° C., for a period of time of between 5 minutes and 5 hours, the weight ratio of said cobalt metal salt to said Al2O3·SiO2 or CoAl2O4—Al2O3·SiO2 porous support being between 0.1 and 1, and forming a solid mixture;
• b) heating the solid mixture obtained at the end of a) with stirring under atmospheric pressure at a temperature between the melting point of said cobalt metal salt and 200° C. for a period of time between 5 minutes and 12 hours;
• and
• c) obtaining a solid at the end of b) and calcining said solid at a temperature above 200° C. and below or equal to 1100° C. under an inert atmosphere or under an oxygen-containing atmosphere.