PURIFICATION OF HYDROGEN PEROXIDE

PROBLEM TO BE SOLVED: To obtain high-purity hydrogen peroxide by irradiating hydrogen peroxide with light. SOLUTION: Hydrogen peroxide is irradiated with light to purify. Namely, since organic impurities in hydrogen peroxide are subjected to oxidative decomposition into a carbon dioxide gas and rele...

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Bibliographische Detailangaben
Hauptverfasser:	SAKAITANI HISASHI, TANAKA KAZUNARI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEMICONDUCTOR DEVICES THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain high-purity hydrogen peroxide by irradiating hydrogen peroxide with light. SOLUTION: Hydrogen peroxide is irradiated with light to purify. Namely, since organic impurities in hydrogen peroxide are subjected to oxidative decomposition into a carbon dioxide gas and released to air by irradiating the hydrogen peroxide with light, the organic impurities in hydrogen peroxide can be removed. A method for efficiently irradiating a solution with light while stirring is preferable as a method for irradiating hydrogen peroxide with light. Although ozone occurs by irradiation with light, the ozone is naturally decomposed and it will cause no problems in the following treatments. The concentration of hydrogen peroxide is preferably 1-70wt.%. Removal of impurities in hydrogen peroxide, which has been conventionally impossible by purification through a distillation method or an ion exchange resin, can be carried out by irradiation with light more efficiently by purification by distillation method or an ion exchange resin after the irradiation.