Method of purifying aqueous solution of hydrogen peroxide

Details Method of purifying aqueous solution of hydrogen peroxide Method of purifying aqueous solution of hydrogen peroxide

1998-10-27

2000-04-25

Langel, Wayne

Chemistry of inorganic compounds

Oxygen or compound thereof

Peroxide

C01B 1501

Patent

active

060541091

ABSTRACT:
A method of purifying an aqueous solution of hydrogen peroxide by using an ion exchange resin and a adsorbent to obtain a highly pure aqueous solution of hydrogen peroxide with a metal concentration of not more than 0.1 ppb and a total organic carbon concentration of not more than 10 ppm, which comprises, in the order of purificatory passage of the solution, (A) a step of removing dissociable impurities by means of a mixed bed ion exchange resin, (B) a step of removing undissociable impurities by means of a hydrophilic porous adsorbent having a specific surface of not less than 1000 m.sup.2 /g, and (C) a step of removing dissociable impurities by means of a mixed bed ion exchange resin.

REFERENCES:
patent: 4999179 (1991-03-01), Sugihara et al.
patent: 5232680 (1993-08-01), Honig et al.
patent: 5851505 (1998-12-01), Nishide et al.

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