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US 4,359,410 AGranted
Process of producing a catalyst carrier
AssigneeToyota Jidosha Kogyo Kabushiki Kaisha
InventorsHideaki Ueno, Fumiyoshi Noda
Life of this patent
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Abstract
Catalyst carrier produced by a process of dehydrating alumina hydrate, granulating and roasting at 150.degree..about.850.degree. C. to yield particles; and curing said particles in an aqueous solution of caustic alkali or in an aqueous solution of sodium aluminate or in a mixture of both under a saturated steam pressure of 120.degree.-200.degree. C.; and said manufacturing process.
Claims5
A process of producing a catalyst carrier, comprising the steps of:
- (a) dehydrating alumina hydrate;
- (b) granulating the alumina obtained from step a;
- (c) calcining the granules obtained in step b at from about 150.degree. C. to 850.degree. C.;
- (d) curing the granules calcined in step c in an aqueous solution of one or more members selected from the group consisting of NaAlO.sub.2, NaOH, KOH, Ba(OH).sub.2, and a carbonate salt under saturated steam pressure at from about 120.degree. C. to 200.degree. C.;
- and
- (e) drying and firing the product of step d.
3 more elements
Dependencies are inferred from the claim text.