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
1997-06-02
1998-02-10
Caldarola, Glenn
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 22, 502 27, 502 33, B01J 3874, B01J 2034
Patent
active
057168954
ABSTRACT:
A simple and excellent process for the regeneration of heteropolyacid catalysts can be provided. A heteropolyacid catalyst, e.g. a phosphomolybdic acid catalyst, whose activity has been lowered can be regenerated by dissolving and/or suspending it in an aqueous medium and then treating with an inorganic ion-exchange material, e.g. crystalline antimonic acid.
REFERENCES:
patent: 3249555 (1966-05-01), Wentz et al.
patent: 4052332 (1977-10-01), D'Amore
Copy of the European Search Report dated Jun. 5, 1996.
Shiraishi Kazuo
Sudo Atsushi
Sugi Hideki
Caldarola Glenn
Ghyka Alexander G.
Nippon Kayaku Kabushiki Kaisha
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