Process for the purification of hydrogen peroxide
AssigneeChemoxal S.A.
InventorsJean-Marie Dhalluin, Jean-Jacques Wawrzyniak, Henry Ledon
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Abstract
Process for purification of aqueous solutions of hydrogen peroxide comprising the steps of adding one or more macroligands to said solution to form a mixture and forcing the mixture through an ultrafiltration membrane.
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Claims15
Process for manufacturing unstabilized ultrapure hydrogen peroxide from a crude product comprising the steps of purifying the hydrogen peroxide by passing over a column of an adsorbent which is a zeolite, adding one or more macroligands to said solution to form a mixture and forcing the mixture through an ultrafiltration membrane.
Process for purification of aqueous solutions of hydrogen peroxide comprising the steps of obtaining said aqueous solution of hydrogen peroxide by autooxidation of anthraquinone or of its derivatives, anodic oxidation of an SO.sub.4.sup.- /HSO.sub.4.sup.- couple, cathodic reduction of oxygen or a direct synthesis, purifying said aqueous solution of hydrogen peroxide by passing said solution over a column of an adsorbent which is a zeolite, and adding one or more macroligands to said purified solution to form a mixture and forcing the mixture through an ultrafiltration membrane.
Dependencies are inferred from the claim text.