Method for preparing high-purity aqueous hydrogen peroxide

Details Method for preparing high-purity aqueous hydrogen peroxide Method for preparing high-purity aqueous hydrogen peroxide

1998-03-05

2000-01-11

Langel, Wayne

Chemistry of inorganic compounds

Oxygen or compound thereof

Peroxide

C01B 1501

Patent

active

06013237&

ABSTRACT:
There is herein disclosed a method for preparing high-purity aqueous hydrogen peroxide by bringing aqueous hydrogen peroxide into contact with a strongly basic anion exchange resin, said method comprising the step of using the strongly basic anion exchange resin which is converted into a form of an exchange group at the time of the purification of aqueous hydrogen peroxide by bringing the strongly basic anion exchange resin into contact with a liquid agent passed through a filter having an average pore diameter of 1.0 .mu.m or less.
According to the present invention, aqueous hydrogen peroxide containing inorganic impurities such as metals and metallic compounds can be purified to prepare extremely high-purity aqueous hydrogen peroxide.

REFERENCES:
patent: 5200166 (1993-04-01), Shiga et al.
patent: 5534238 (1996-07-01), Kajiwara et al.
patent: 5733521 (1998-03-01), Minamikawa et al.

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