Process for manufacturing a group VIII noble metal catalyst of improved resistance to sulfur, and its use for hydrogenating aromatic hydrocarbons
AssigneeInstitut Francais du Petrole
InventorsJean Cosyns, Marc Gremillon
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Abstract
Noble metal catalyst of improved resistance to sulfur compounds, obtained by subjecting a catalyst containing a noble metal from group VIII or a compound thereof, a halogen and a carrier, to a first treatment with an inert gas such as nitrogen at 100.degree.-600.degree. C. and to a second treatment with a hydrocarbon material containing at least one sulfur compound, such as an alkyl sulfide, an alkyldisulfide or a thiophenic compound, in an inert gas atmosphere at 50.degree.-400.degree. C.
Claims12
In a process for manufacturing a noble metal catalyst, which comprises the steps of admixing a noble metal from group VIII or a compound of such metal and a halogen with a carrier to form a catalytic composition, and roasting said catalytic composition;
- the improvement which comprises the further steps of (a) treating the resultant roasted composition with a substantially hydrogen-free inert gas at a temperature of from 100.degree. to 600.degree. C., and then (b) treating the resultant composition from step (a) with a mixture of at least one hydrocarbon and at least one sulfur compound, in a substantially hydrogen-free inert gas environment and at a temperature of from 50.degree. to 400.degree. C.;
- whereby a catalyst having improved resistance to sulfur is obtained.
Dependencies are inferred from the claim text.