| abstract |
A process for producing a purified aqueous hydrogen peroxide solution comprises contacting an aqueous hydrogen peroxide solution containing metal ion impurities firstly with a H + type cation exchange resin, secondly with a carbonate iron (CO 3 2− ) type or bicarbonate ion (HCO 3 − ) type anion exchange resin, and thirdly with a H + type cation exchange resin. Further, a process for producing a purified aqueous hydrogen peroxide solution comprises contacting an aqueous hydrogen peroxide solution containing metal ion impurities firstly with a H + type cation exchange resin, secondly with a fluoride ion (F − ) type anion exchange resin, thirdly with a carbonate ion (CO 3 2− ) type or bicarbonate ion (HCO 3 − ) type anion exchange resin, and fourthly with a H + type cation exchange resin. |