| abstract |
Disclosed is a catalyst comprising nickel and sulfur on an alumina support, said catalyst being characterized in that: - the nickel is distributed both in a shell at the periphery of the support and in the core of the support, the thickness of the shell being between 2% and 15% of the diameter of the catalyst; - the nickel density ratio of the shell to the core is strictly greater than 3; - the shell 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. |