Process for producing a purified aqueous hydrogen peroxide...

Details Process for producing a purified aqueous hydrogen peroxide... Process for producing a purified aqueous hydrogen peroxide...

2005-05-24

2005-05-24

Langel, Wayne A. (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Peroxide

Reexamination Certificate

active

06896867

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 (CO32−) type or bicarbonate ion (HCO3−) 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 (CO32−) type or bicarbonate ion (HCO3−) type anion exchange resin, and fourthly with a H+type cation exchange resin.

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