Catalytic compositions and a deodorizing method using the same

Details Catalytic compositions and a deodorizing method using the same Catalytic compositions and a deodorizing method using the same

1995-12-14

1999-02-16

Beck, Shrive

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

Catalyst or precursor therefor

Phosphorus or compound containing same

502213, 502214, 502216, 502340, 502343, 502344, 502345, 502347, 502349, 502350, 502405, 502406, 502407, B01J 2718

Patent

active

058720723

ABSTRACT:
A malodorous component is eliminated using a catalytic composition comprising a phosphate of a tetravalent metal (titanium or other Group 4 elements of the Periodic Table of Elements), a hydroxide of a divalent metal (copper, zinc or other transition metal), and a photocatalyst. The photocatalyst includes sulfide-semiconductors, oxide-semiconductors and other photo-semiconductors, e.g. titanium oxide. The composition may further contain silicon dioxide and/or a silver component. The catalytic composition insures efficient elimination of not only acidic components and basic components but also neutral components over a long period, irrespective of with or without a light irradiation.

REFERENCES:
patent: 4623437 (1986-11-01), Visca et al.
patent: 4666945 (1987-05-01), Osugi et al.
patent: 5234884 (1993-08-01), Mouri et al.

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