Process for purifying an aqueous solution of hydrogen peroxide

Details Process for purifying an aqueous solution of hydrogen peroxide Process for purifying an aqueous solution of hydrogen peroxide

1998-04-15

1999-11-02

Langel, Wayne

Chemistry of inorganic compounds

Oxygen or compound thereof

Peroxide

C01B 1501

Patent

active

059764872

ABSTRACT:
A process for purifying an aqueous solution of hydrogen peroxide comprising bringing the aqueous solution of hydrogen peroxide into contact with a cation exchange resin or an anion exchange resin, aging the obtained intermediately purified aqueous solution of hydrogen peroxide by standing alone for 1 hour or more, and bringing the aged aqueous solution of hydrogen peroxide into contact with an ion exchange resin of the same type.
The process provides a high purity aqueous solution of hydrogen peroxide and can advantageously be used in the field of production of semiconductors.

REFERENCES:
patent: 3074782 (1963-01-01), Meeker et al.
patent: 4999179 (1991-03-01), Sugihara et al.
patent: 5397475 (1995-03-01), Millar et al.
patent: 5534238 (1996-07-01), Kajiwara et al.
patent: 5733521 (1998-03-01), Minamikawa et al.
Webster's New Collegiate Dictionary, G. & C. Merriam Company, p. 22, 1979.

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