PROCESS FOR PREPARING A Ni/Sn SUPPORTED CATALYST FOR THE SELECTIVE HYDROGENATION OF POLYUNSATURATED HYDROCARBONS

摘要

A process is described for preparing a catalyst comprising at least one porous support and at least one metallic phase containing nickel and tin in a proportion such that the Sn/Ni molar ratio is in the range 0.01 to 0.2, said process comprising at least the following steps in succession:a) depositing nickel on at least said support in order to obtain a supported nickel-based monometallic catalyst;b) reducing said monometallic catalyst in the presence of at least one reducing gas;c) depositing, in the gas phase and in the presence of at least one reducing gas, at least one organometallic tin compound onto said reduced monometallic catalyst; andd) activating the solid derived from said step c) in the presence of at least one reducing gas.