Abstract: Hydrogenation of at least one aromatic or polyaromatic compound contained in a hydrocarbon feedstock having a final boiling point below or equal to 650° C., at a temperature of between 30 and 350° C., at a pressure of between 0.1 and 20 MPa, at a hydrogen/(aromatic compounds to be hydrogenated) molar ratio between 0.1 and 10 and at an hourly space velocity HSV of between 0.05 and 50 h?1, in the presence of a catalyst comprising an alumina support and an active phase comprising nickel, prepared by i) contacting the support with a solution containing a nickel precursor; ii) bringing the support into contact with a solution containing an organic compound comprising a carboxylic acid, or alcohol, or ester, or amide function; iii) drying the impregnated support at a temperature below 250° C.; i) and ii) being carried out separately, in any order, or at the same time.

Abstract: A process for the selective hydrogenation of polyunsaturated compounds containing at least 2 carbon atoms per molecule, contained in a hydrocarbon feedstock having a final boiling point below or equal to 300° C. in the presence of a catalyst comprising an alumina support and an active phase comprising nickel, said active phase not comprising a metal from Group VIB, said catalyst being prepared by a process comprising at least: i) a step of bringing said support into contact with at least one solution containing at least one nickel precursor; ii) a step of bringing said support into contact with at least one solution containing at least one organic compound comprising at least one carboxylic acid function; iii) a step of drying said impregnated support at a temperature below 250° C.; steps i) and ii) being carried out separately, in any order.

Abstract: Hydrogenation of at least one aromatic or polyaromatic compound contained in a hydrocarbon feedstock having a final boiling point below or equal to 650° C., at a temperature of between 30 and 350° C., at a pressure of between 0.1 and 20 MPa, at a hydrogen/(aromatic compounds to be hydrogenated) molar ratio between 0.1 and 10 and at an hourly space velocity HSV of between 0.05 and 50 h?1, in the presence of a catalyst comprising an alumina support and an active phase comprising nickel, prepared by i) contacting the support with a solution containing a nickel precursor; ii) bringing the support into contact with a solution containing an organic compound comprising a carboxylic acid, or alcohol, or ester, or amide function; iii) drying the impregnated support at a temperature below 250° C.; i) and ii) being carried out separately, in any order, or at the same time.

Abstract: Hydrogenation of at least one aromatic or polyaromatic compound contained in a hydrocarbon feedstock having a final boiling point below or equal to 650° C., at a temperature of between 30 and 350° C., at a pressure of between 0.1 and 20 MPa, at a hydrogen/(aromatic compounds to be hydrogenated) molar ratio between 0.1 and 10 and at an hourly space velocity HSV of between 0.05 and 50 h?1, in the presence of a catalyst comprising an alumina support and an active phase comprising nickel, prepared by i) contacting the support with a solution containing a nickel precursor; ii) bringing the support into contact with a solution containing an organic compound comprising a carboxylic acid, or alcohol, or ester, or amide function; iii) drying the impregnated support at a temperature below 250° C.; i) and ii) being carried out separately, in any order, or at the same time.

Abstract: Selective hydrogenation of polyunsaturated compounds containing at least 2 carbon atoms per molecule contained in a hydrocarbon feed with a final boiling point of 300° C. or less, in the presence of a catalyst having a support formed from alumina and an active phase constituted by nickel, said catalyst being prepared by: i) bringing said support into contact with at least one solution containing at least one precursor of nickel; ii) bringing said support into contact with at least one solution containing at least one organic compound comprising at least one amine function with the empirical formula CxNyHz in which x is in the range 1 to 20, y=1?x and z=2?2x+2, or an amide function, or an amino acid, iii) drying said impregnated support at a temperature of less than 250° C.; steps i) and ii) being carried out separately, in any order, or simultaneously.

Abstract: A process for the selective hydrogenation of polyunsaturated compounds containing at least 2 carbon atoms per molecule, contained in a hydrocarbon feedstock having a final boiling point below or equal to 300° C. in the presence of a catalyst comprising an alumina support and an active phase comprising nickel, said active phase not comprising a metal from Group VIB, said catalyst being prepared by a process comprising at least: i) a step of bringing said support into contact with at least one solution containing at least one nickel precursor; ii) a step of bringing said support into contact with at least one solution containing at least one organic compound comprising at least one carboxylic acid function; iii) a step of drying said impregnated support at a temperature below 250° C.; steps i) and ii) being carried out separately, in any order.

Abstract: Selective hydrogenation of polyunsaturated compounds containing at least 2 carbon atoms per molecule contained in a hydrocarbon feed with a final boiling point of 300° C. or less, in the presence of a catalyst having a support formed from alumina and an active phase constituted by nickel, said catalyst being prepared by: i) bringing said support into contact with at least one solution containing at least one precursor of nickel; ii) bringing said support into contact with at least one solution containing at least one organic compound comprising at least one amine function with the empirical formula CxNyHz in which x is in the range 1 to 20, y=1?x and z=2?2x+2, or an amide function, or an amino acid, iii) drying said impregnated support at a temperature of less than 250° C.; steps i) and ii) being carried out separately, in any order, or simultaneously.