| abstract |
New catalytic composition comprising at least one quaternary ammonium and / or phosphonium salt, the anion of which is preferably chosen from the group formed by tetrafluoroborate, tetrachloroborate, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, trifluorosulfonate , fluorosulfonate, tetrachloroaluminate, dichlorocuprate, trichlorozincate and at least one complex of a transition metal from groups 8, 9 and 10, that is to say iron, ruthenium, cobalt, rhodium, iridium, nickel, palladium and platinum. Application to the total or selective hydrogenation of unsaturated compounds such as monoolefins, diolefins, acetylenics, aromatics, polynuclear aromatics, hydrogenation possibly being accompanied by isomerization. |