C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 11/02 (2006.01) C02F 1/50 (2006.01) C02F 1/76 (2006.01) C02F 1/72 (2006.01)
Patent
CA 2225650
Described is a method of preparing aqueous chlorine dioxide solutions by the oxidation of chlorites with oxyacids and/or oxyacid anions having a suitable redox potential in buffered aqueous solution. An acidic aqueous solution (solution A), with a pH of about 5 or less, containing the oxyacids and/or oxyacid anions, is prepared and mixed with an aqueous chlorite solution (solution B) to form chlorine dioxide, the pH of the reaction mixture remaining at less than 6.95 and being stabilized by an integral buffer system.
Ce procédé sert à préparer des solutions aqueuses de dioxyde de chlore par oxydation de chlorite avec des oxacides et/ou des anions d'oxacides d'un potentiel d'oxydoréduction approprié dans un milieu aqueux tamponné. On prépare une solution aqueuse acide A d'un pH d'environ 5 ou moins qui contient les oxacides et/ou les anions d'oxacides et on mélange la solution aqueuse acide A avec une solution aqueuse de chlorite pour former le dioxyde de chlore. Un pH inférieur à 6,95 s'établit dans le mélange réactionnel et est stabilisé par un système de tamponnage incorporé.
Kuke Fritz
Rimpler Manfred
Rimpler Marcus
Gowling Lafleur Henderson Llp
Rimpler Manfred
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