Method of using catalysts for reforming or isomerizing hydrocarbons in the presence of hydrogen
AssigneeCompagnie Francaise de Raffinage
InventorsPhilippe Engelhard, Georges Szabo
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Abstract
These catalysts comprise: A refractory oxide-mineral carrier; a halogen element, present in combined form; and, in free or combined form, (a) a platinum-group metal, and (b) tin. They are characterized in that they contain, moreover, a metal from groups Ia and IIa of the periodic table of the elements. Specifically, said metal from groups Ia and IIa may be sodium, lithium, potassium, calcium or barium.
Claims24
Method for the reforming of hydrocarbon fractions whose sulfur content is less than 10 ppm, and whose boiling temperature at atmospheric pressure ranges from 35.degree. to 250.degree. C., comprising the use of a catalyst, in the presence of hydrogen, wherein said catalyst comprises:
- a refractory oxide-mineral carrier;
- a halogen element present in combined form;
- in free or combined form from 0.02 to 2%, based on the total weight of catalyst, of at least one metal M1 from the platinum group;
- in free or combined form from 0.02 to 2%, based on the total weight of catalyst, of tin;
- and
- in combined form, at least one metal M2 selected from groups Ia and IIa of the periodic table of the elements in such an amount that the ratio M2/M1 of the number of atoms of the metal M2 to the number of atoms of the metal M1 in such that 0.2.ltoreq.M2/M1.ltoreq.10.
Method for the isomerization of hydrocarbons, comprising the use of a catalyst, in the presence of hydrogen, wherein said catalyst comprises:
- a refractory oxide-mineral carrier;
- a halogen element present in combined form;
- in free or combined form from 0.02 to 2%, based on the total weight of catalyst, of at least one metal M1 from the platinum group;
- in free or combined form from 0.02 to 2%, based on the total weight of catalyst, of tin;
- and
- in combined form, at least one metal M2 selected from groups Ia and IIa of the periodic table of the elements in such an amount that the ratio M2/M1 of the number of atoms of the metal M2 to the number of atoms of the metal M1 is such that 0.2.ltoreq.M2/M1.ltoreq.10.
Dependencies are inferred from the claim text.