Method for treating a catalyst comprising a zeolite
AssigneeIfp Energies Nouvelles
InventorsSouad RAFIK-CLEMENT, Sylvie LACOMBE, Vincent COUPARD, Heloise DREUX
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Abstract
The present invention relates to a process for treating a catalyst comprising at least one aluminosilicate zeolite of the ZSM-5 family and a binder comprising silicon oxide, such that said treatment comprises a steam treatment of the catalyst, said steam treatment being carried out: on the catalyst in the form of a catalytic bed of catalyst particles, said bed being placed in a catalytic hydrocarbon conversion reactor, with a steam-treatment gas stream passing through the said bed and comprising water vapor, at a temperature of at least 150° C., and a pressure of at most 3×106 Pa.
Claims20
A process for treating a catalyst comprising at least one aluminosilicate zeolite of the ZSM-5 family and a binder comprising silicon oxide, the process comprising:
- a steam treatment of the catalyst, wherein said steam treatment is carried out:
- on the catalyst in the form of a catalytic bed of catalyst particles,
- said bed being placed in a catalytic hydrocarbon conversion reactor,
- with a steam-treatment gas stream passing through the bed comprising water vapor,
- at a temperature of at least 150° C., and
- at a pressure of at most 3×106 Pa.
The process as claimed in claim, wherein the steam treatment of the catalyst is preceded or followed by a calcination of the catalyst as a bed in the catalytic conversion reactor.
A process for preparing a catalyst comprising at least one aluminosilicate zeolite of the ZSM-5 family and a binder comprising silicon oxide, said process comprising:
- i) mixing at least one ZSM-5 zeolite in powder form, said binder and/or a precursor of said binder, and optionally an additive,
- ii) shaping said mixture into catalyst particles,
- iii) subjecting the catalyst particles obtained in step ii) to a steam treatment, said steam treatment being carried out:
- on the catalyst in the form of a catalytic bed of catalyst particles,
- said bed being placed in a catalytic hydrocarbon conversion reactor,
- with a steam-treatment gas stream passing through the said bed and comprising water vapor,
- at a temperature of at least 150° C.,
- and a pressure of at most 3×106 Pa.
Dependencies are inferred from the claim text.