Preparation and use of tin (IV) oxide dispersion

Details Preparation and use of tin (IV) oxide dispersion Preparation and use of tin (IV) oxide dispersion

1989-07-21

1990-08-07

Shine, W. J.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

2523131, 2523152, 502304, 502352, B01J 2314, B01J 2326, B01J 2372

Patent

active

049468200

ABSTRACT:
A tin(IV) oxide dispersion is prepared by peptising metastannic acid with amine peptising agent such as n-butylamine or cyclohexylamine. The dispesion may be a sol or an intermediate convertible to a sol, and may include other components such as metal oxides or their precursors, e.g. one or more of a high surface area alumina and transition metal oxides such as copper(II) oxide and chromium (VI) oxide. The dispersion may be converted to a gel and then to a ceramic, optionally after the sol has been contacted with a substrate, for example to produce a catalyst. Further coatings may be applied to produce a catalyst comprising a mixture of tin(IV) oxide and chromium(VI) oxide on the substrate which may be effective as an oxidation catalyst and useful in the treatment of vehicle exhaust emissions.

REFERENCES:
patent: 3462373 (1969-08-01), Jongkind
patent: 4830844 (1989-05-01), Kolts

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