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US 12,758,946 B2Granted
Process for catalyst regeneration
AssigneeAscend Performance Materials Operations LLC
InventorsMikhail I. Khramov, C. Alex Diaz, Scott G. Moffatt
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Abstract
A process for regenerating a deactivated catalyst, the process comprising contacting a deactivated aluminosilicate zeolite catalyst comprising a nitrogen-containing contaminant with an oxidant to provide a regenerated catalyst comprising less than 0.5% contaminant and a regeneration by-product stream comprising nitrogen.
Claims20
A process for regenerating a deactivated catalyst, the process comprising:
- contacting the deactivated catalyst comprising a nitrogen-containing contaminant with an oxidant to provide a regenerated catalyst comprising less than 0.5 wt. % of the nitrogen-containing contaminant and a regeneration by-product stream comprising carbon dioxide, water, nitrogen, and at least one amine having a molecular weight below 105 g/mol.
A process for regenerating a deactivated catalyst used in an ammonialytic lactam cleavage/dehydration reaction, the process comprising:
- contacting a catalyst with a reactant feed stream comprising ammonia and a lactam;
- monitoring the catalyst activity to determine when the catalyst is deactivated;
- and
- contacting the deactivated catalyst comprising a nitrogen-containing contaminant with an oxidant to provide a regenerated catalyst comprising less than 0.5 wt. % of the nitrogen-containing contaminant and a regeneration by-product stream comprising carbon dioxide, water, nitrogen, and at least one amine having a molecular weight below 105 g/mol.
1 more element
Dependencies are inferred from the claim text.