Catalyst comprising nickel and sulfur on an alumina support, said catalyst being characterized in that:



the nickel is distributed both on a crust at the periphery of the support, and in the core of the support, the thickness of said crust being between 2% and 15% of the diameter of the catalyst;
the nickel density ratio between the crust and the core is strictly greater than 3;
said crust comprises more than 25% by weight of nickel element relative to the total weight of nickel contained in the catalyst,
the size of the nickel particles in the catalyst, measured in oxide form, is between 7 and 25 nm.