Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1987-11-12
1989-03-21
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
502 29, 502211, 562535, B01J 2728, B01J 3866, C07C 57055, C07C 51235
Patent
active
048143057
ABSTRACT:
A method for regenerating a phosphorus-, molybdenum- and alkali metal-containing oxidation catalyst spent in the production of an unsaturated carboxylic acid by vapor-phase oxidation of an unsaturated aldehyde, which comprises treating the deactivated catalyst with aqueous ammonia and an aqueous solution containing at least one of a nitrogen-containing heterocyclic compound, an amine, and ammonium carbonate, followed by drying and calcining the treated catalyst.
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patent: 4471062 (1984-09-01), Farrington et al.
patent: 4604370 (1986-08-01), Sarumaru et al.
patent: 4707460 (1987-11-01), Ishii et al.
Kamogawa Masatake
Kato Masaaki
Konopka Paul E.
Mitsubishi Rayon Co. Ltd.
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