Selective hydrogenation catalyst comprising specific carrier in the form of an aluminate

A selective hydrogenation catalyst comprising an active phase containing at least one group VIB metal and at least one group VIII metal, and a porous support containing alumina and at least one spinel MAl2O4 where M is chosen from nickel and cobalt, wherein:

• a molar ratio (r1) between said at least one group VIII metal and said at least one group VIB metal of the active phase is 1.5 to 3.0 mol/mol;
• a molar ratio (r2) between M of the porous support and said at least one group VIII metal of the active phase is 0.5 to 0.7 mol/mol;
• a molar ratio (r3) between the sum of the contents of M and of the at least one group VIII metal relative to the content of the at least one group VIB metal is 2.2 to 3.0 mol/mol;
• a molar ratio (r4) between M of the porous support and said Group VIB metal of the active phase is 0.7 to 1.5 mol/mol;
• a content of the Group VIII metal of the active phase, measured as oxide, is 4 to 13% by weight relative to the total weight of the catalyst;
• and
• a content of the Group VIB metal of the active phase, measured as oxide, is 2 to 9% by weight relative to the total weight of the catalyst.