Patent ID: 6833115
Filing Date: 2004-12-21
Classification: A62D,B01J

Abstract:
A method of decomposing a substance in which a decomposition target substance and a decomposition promoting substance, which is capable of decomposing said decomposition target substance under irradiation with light, are introduced into a decomposition area for decomposing the decomposition target substance, and those substances are contacted with each other while they are in a gas phase under irradiation with light to decompose the decomposition target substance, the method comprising the steps of:(a) introducing said decomposition promoting substance into said decomposition area; (b) irradiating said decomposition area with light; and (c) introducing the decomposition target substance into said decomposition area, wherein the steps are started in the order of said steps (a), (b) and (c), the step (a) the earliest, at the time of starting the operation of decomposing said decomposition target substance, and said steps are stopped in the order of (c), (b) and (a), the step (c) the earliest, at the time of ending the operation of decomposing said decomposition target substance.