초록 ▼

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 in

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.

대표청구항 ▼

[ What is claimed is:] [1.] A catalytic composition comprising at least one phosphate of a tetravalent metal selected from the group consisting of a phosphate of titanium, a phosphate of zirconium, a phosphate of hafnium, and a phosphate of tin, at least one hydroxide of a divalent transition metal

[ What is claimed is:] [1.] A catalytic composition comprising at least one phosphate of a tetravalent metal selected from the group consisting of a phosphate of titanium, a phosphate of zirconium, a phosphate of hafnium, and a phosphate of tin, at least one hydroxide of a divalent transition metal selected from the group consisting of a hydroxide of copper and a hydroxide of zinc, and a photocatalyst comprising titanium oxide.