Abstract: Process for preparing a catalyst containing an active phase based on a group VIII metal and a porous support, comprising the following steps: bringing said support into contact with an organic compound comprising at least oxygen and/or nitrogen; bringing the porous support into contact with a solution containing a precursor of the active phase comprising a group VIII metal; drying the catalyst precursor at a temperature of less than 200° C. so as to obtain a dried catalyst precursor; calcining the dried catalyst precursor at a temperature of between 200° C. and 1100° C. under a stream of inert gas and/or of oxidizing gas, it being understood that the velocity of said gas stream, defined as the mass flow rate of said gas stream per volume of catalyst per hour, is greater than 1 litre per gram of catalyst and per hour.

Abstract: Process for preparing a catalyst containing an active phase based on a group VIII metal and a porous support, comprising the following steps: bringing said support into contact with an organic compound comprising at least oxygen and/or nitrogen; bringing the porous support into contact with a solution containing a precursor of the active phase comprising a group VIII metal; drying the catalyst precursor at a temperature of less than 200° C. so as to obtain a dried catalyst precursor; calcining the dried catalyst precursor at a temperature of between 200° C. and 1100° C. under a stream of inert gas and/or of oxidizing gas, it being understood that the velocity of said gas stream, defined as the mass flow rate of said gas stream per volume of catalyst per hour, is greater than 1 litre per gram of catalyst and per hour.

Abstract: The invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support also containing a mixed oxide phase containing cobalt and/or nickel, said catalyst having been prepared by introducing at least one hydrocarbon organic compound of formula CxHy. The invention also relates to the use thereof in the field of Fischer-Tropsch synthesis processes.

Abstract: A catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on a support containing silica, alumina and at least one simple spinel MAl2O4 or mixed spinel MxM?(1-x)Al2O4) which is or is not partial, wherein M and M? are separate metals selected from the group formed by magnesium, copper, cobalt, nickel, tin, zinc, lithium, calcium, caesium, sodium, potassium, iron and manganese, and wherein x is between 0 and 1, the values 0 and 1 being themselves excluded, characterised in that said active phase further comprises boron, the boron content being between 0.001% and 0.5% by weight with respect to the total weight of the catalyst, the value 0.5 being itself excluded.

Abstract: The invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support also containing a mixed oxide phase containing cobalt and/or nickel, said catalyst having been prepared by introducing at least one hydrocarbon organic compound of formula CxHy. The invention also relates to the use thereof in the field of Fischer-Tropsch synthesis processes.

Abstract: A catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on a support containing silica, alumina and at least one simple spinel MAl2O4 or mixed spinel MxM?(1?x)Al2O4) which is or is not partial, wherein M and M? are separate metals selected from the group formed by magnesium, copper, cobalt, nickel, tin, zinc, lithium, calcium, caesium, sodium, potassium, iron and manganese, and wherein x is between 0 and 1, the values 0 and 1 being themselves excluded, characterised in that said active phase further comprises boron, the boron content being between 0.001% and 0.5% by weight with respect to the total weight of the catalyst, the value 0.5 being itself excluded.