Patent EP-0181800-A1 (EP)
Inventor: MIMOUN HUBERT
IPC: B01J31/18
Filed: 1985-10-22
Abstract: 1. A method of softening a batch of hydrocarbons containing sulphur products, by percolation of the said batch over a fixed bed of catalyst at a temperature below 120 degrees C, the method being characterized in that the catalyst is based on at least one complex consisting of at least one chelate or at least one metal with at least one multi-toothed ligand comprising at least one amide function, the said complex being deposited on a carrier, the said complex being chosen from the group consisting of : - complexes to general formulae ML2  or M(LH)2 X2  in which M is a transition metal, X an anion, L emanating from a double-toothed ligand [LH] based on an amide of picolinic acid or one of its derivatives with a primary amine, [LH] having as a general formula :  see diagramm : EP0181800,P12,F1  in which R is an alkyl, aryl, arylkyl or alkylaryl group comprising 1 to 20 carbon atoms per molecule and R' represents either one or a plurality of hydrogen atoms or one or a plurality of alkyl, aryl, arylkyl or alkylaryl groups comprising 1 to 20 carbon atoms, or one or a plurality of substituents of the halogen, nitro, amino, carboxylate or sulphonate type in position 3, 4, 5 or 6 of the pyridine nucleus ; - the complexes to general formulae ML2  or (M(LH)2 X2  in which M is a transition metal, X an anion, L emanating from a triple-toothed ligand [LH] based on a diamide of picolinic acid or one of its derivatives substituted with ammonia, [LH] having as a general formula :  see diagramm : EP0181800,P12,F2  in which R and R', identical or different, each represents one or a plurality of hydrogen atoms or alkyl, aryl, aralkyl, alkylaryl groups comprising 1 to 20 carbon atoms or halogen, amine, nitro, carboxylate, sulphonate substituents in position 3, 4, 5 or 6 in the pyridine nucleus. - the complexes to general formulae ML or M(LH2 )X2  in which M is a transition metal, X an anion, L originating from a tetra-toothed ligand [LH2 ] based on a diamide of picolinic acid or one of its derivatives substituted with compounds comprising at least two primary amine functions separated from each other by at least two carbon atoms [LH2 ] having as its general formula :  see diagramm : EP0181800,P12,F3  in which R' and R'', identical or different, each represent one or a plurality of hydrogen atoms or alkyl, aryl, aralkyl, alkylaryl groups comprising 1 to 20 carbon atoms or substituents of the halogen, nitro, amino, carboxylate, sulphonate type in position 3, 4, 5 or 6 in the pyridine nucleus, R is a radical comprising at least two carbon atoms and chosen from the group consisting of CH2 CH2 , CH2 -CH2 CH2 , -CH-(CH2 )4 -CH-  see diagramm : EP0181800,P13,F4  in which R1  is an alkyl, aryl radical or an NO2 halogen, NH2 , SO3 H, COOH group and in which R2  is an alkyl, aryl radical or an NO2  halogen, NH2 , SO3 H, COOH group ; - the complexes to general formulae ML or M(LH2 )X2  in which M is a transition metal, X an anion, L originating from a ligand [LH2 ] based on a cyclic tetramide of dipicolinic acid or one of its derivatives with ammonia to the formula :  see diagramm : EP0181800,P13,F5  in which R and R', identical or different, each represent one or a plurality of hydrogen atoms or one or a plurality of alkyl, aryl, alkylaryl or aralkyl groups comprising 1 to 20 carbon atoms, or substituents of the halogen, nitro, amino, carboxylate or sulphonate type in position 3, 4 or 5 of the pyridine cycle ; - and complexes to general formulae ML or M(LH2 )X2  in which M represents a transition metal and X an anion and in which L originates from a ligand to formula [LH2 ] based on a diamide of oxalic acid or of phthalic acid or one of its derivatives, substituted with an amino pyridine or an amino quinoline to the formulae :  see diagramm : EP0181800,P13,F6