Catalyst regeneration process

Details Catalyst regeneration process Catalyst regeneration process

1995-12-18

1996-11-12

Pal, Asok

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 38, 502 56, B01J 3844

Patent

active

055739881

ABSTRACT:
The present invention concerns a regeneration process for a catalyst containing at least one metallic element selected from the group formed by platinum, palladium, ruthenium, rhodium, osmium, iridium and nickel, preferably platinum, on a refractory oxide based support, which has been deactivated by coke deposition. The regeneration process is characterised in that said regeneration consists of treatment with a gas containing at least chlorine and molecular oxygen, at a temperature between 20.degree. C. and 800.degree. C. and a total gas flow rate, expressed in liters of gas per hour and per gram of catalyst, of between 0.05 and 20. The process at least restores the initial catalytic properties of the catalyst.

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patent: 4444895 (1984-04-01), Fung et al.
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patent: 4855269 (1989-08-01), Mohr
patent: 4872970 (1989-10-01), Boyle
patent: 5188996 (1993-02-01), Huang et al.

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