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AssigneeIfp Energies Nouvelles
InventorsDominique DECOTTIGNIES, Antoine FECANT, Leonor DUARTE MENDES CATITA
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Preparation of a catalyst that comprises an active phase of at least one metal of group VIM that is deposited on an oxide substrate, a) An oxide substrate that comprises alumina, silica, or a silica-alumina is provided; b) The oxide substrate of step a) is impregnated by an aqueous or organic solution that comprises at least one metal salt of group VIM that is selected from among cobalt, nickel, ruthenium, and iron, and then the product that is obtained is dried at a temperature of between 60 and 200° C.; A treatment under water vapor of the solid that is obtained in step b) is carried out at a temperature of between 110 and 195° C. for a length of time of between 30 minutes and 4 hours, in the presence of an air/vapor mixture that comprises between 2 and 50% by volume of water in vapor form.
Method for preparation of a catalyst that comprises an active phase that comprises at least one metal of group VIIIB that is selected from among cobalt, nickel, ruthenium, and iron, deposited on an oxide substrate, where said method comprises the following steps:
Method according to Claim characterized in that a step a′) is carried out between steps a) and b) of said method, a step a′) in which the oxide substrate that is provided in step a) is impregnated by an aqueous or organic solution of a phosphorus precursor, then a drying step is initiated at a temperature of between 60° C. and 200° C., and then a step for calcination of the solid that is obtained is initiated at a temperature of between 200° C. and 1100° C.
Dependencies are inferred from the claim text.