Patent ID: 7150854
Filing Date: 2006-12-19
Classification: C01B

Abstract:
1. A method for generating an aqueous chlorine dioxide solutions comprising contacting a device with liquid water, the device comprising: a chlorite which produces a boundary layer upon exposure to liquid water, the chlorite being selected from the group consisting of an alkali metal chlorite and an alkaline earth metal chlorite, the chlorite being adhered to a substrate, the chlorite boundary layer being formed next to the substrate, and a chemical reagent which produces a boundary layer upon exposure to liquid water, the reagent being adhered to the same or a different substrate as the chlorite, the reagent boundary layer being formed next to the substrate; wherein the chlorite and the reagent being spatially related such that upon exposure of the device to liquid water, the chlorite boundary layer comes into contact with the reagent boundary layer to thereby produce an aqueous chlorine dioxide solution, wherein the chlorite and the reagent are adhered to a surface of the substrate in the form of one or more layers, and wherein the chlorite is disposed as a first layer adhered to the surface of a first substrate and the reagent is disposed as a second layer adhered to the surface of a second substrate, said first and second layers disposed such that they are substantially facing each other, said first and second substrates being physically separated from each other by spacer means which prevent physical contact of the first and second layers.