The Reaction of Chlorate with Hydrogen Peroxide in Sulfuric Acid Solution

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  • YAMASAKI Sumio
    Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyo University
  • OHURA Hiroki
    Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyo University
  • SUMIYOSHI Masashi
    Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyo University
  • TSURU Sumiaki
    Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyo University
  • NAKAMORI Issei
    Department of Industrial Chemistry, Faculty of Science and Engineering Saga University

Bibliographic Information

Other Title
  • 硫酸酸性溶液中における塩素酸イオンと過酸化水素の反応

Description

By considering material balances and effects of concentration ratio of hydrogen peroxide to chlorate, it was found that products of the reaction between chlorate and hydrogen peroxide were chlorine dioxide, chlorine and oxygen, and that amounts of chlorine was small as compared with others. The main reaction was represented by the equation (1), 2 ClOa" + H2O2- + 2 H+=2 ClO2- + 2 H2O + O2- (1) The formation of chlorine could be explained by assuming that chlorine dioxide first disproportionate to chloride in the hydrogen peroxide solution and this chloride reacted with chlorate in sulfuric acid solution. The reaction rate was estimated to be first order for both Cl0, - and 112O2- by measuring the change in absorbance at 360 nm. The perhydroxyl radical HO, was found to play an important role in this reaction by using p-nitrophenyl acetete and allylthiourea. Based on the assumption of the oxidation and reduction mechanism of hydrogen peroxide with metal ion proposed in the previous reports by Haber, Weiss, Baxendale, Saito and Stein, following equations were proposed as elementary reactions. H2O2- + H+=113O2-+ (pK, , -- .7) kl Cl0 + H3O2+=ClO2- + H2O + HO2-. k-1 k2 HO2-. + Cl0 + H+ ClO2- + H2O °2Experimental results favored the appropriateness of these derived equations.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1977 (9), 1319-1323, 1977-09-10

    The Chemical Society of Japan

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