Kinetics of Formation of Peroxyformic Acid

1996 ◽  
Vol 61 (10) ◽  
pp. 1457-1463 ◽  
Author(s):  
Vladimír Mošovský ◽  
Zuzana Cvengrošová ◽  
Alexander Kaszonyi ◽  
Milan Králik ◽  
Milan Hronec
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Model ◽  
Formic Acid ◽  
Oxidation Kinetics ◽  
Oxidation Process ◽  
Aqueous Hydrogen Peroxide ◽  
Kinetics Of Formation ◽  
Peroxyformic Acid ◽  
Kinetics Of

Oxidation kinetics of formic acid with aqueous hydrogen peroxide (30-70%) has been studied at 45 °C with 0-0.1 M H2SO4 as a catalyst. A kinetic model has been suggested which satisfactorily describes the oxidation process of formic acid to peroxyformic acid.

Oxidation kinetics of two pesticides in natural waters by ozonation and ozone combined with hydrogen peroxide

2011 ◽  
Vol 45 (8) ◽  
pp. 2517-2526 ◽  
Author(s):  
Pamela Chelme-Ayala ◽  
Mohamed Gamal El-Din ◽  
Daniel W. Smith ◽  
Craig D. Adams
Keyword(s):  
Hydrogen Peroxide ◽  
Oxidation Kinetics ◽  
Natural Waters ◽  
Kinetics Of

Totally Chlorine Free Bleaching of Eucalyptus globulus Dissolving Pulps Delignified with Peroxyformic Acid and Formic Acid

Holzforschung ◽  
2002 ◽  
Vol 56 (1) ◽  
pp. 60-66 ◽  
Author(s):  
S. Abad ◽  
B. Saake ◽  
J. Puls ◽  
J. C. Parajó
Keyword(s):  
Hydrogen Peroxide ◽  
Formic Acid ◽  
Eucalyptus Globulus ◽  
Molar Mass ◽  
Oxygen Delignification ◽  
Operational Conditions ◽  
Bleached Pulp ◽  
Target Values ◽  
Dissolving Pulps ◽  
Peroxyformic Acid

Summary Eucalyptus globulus wood samples were delignified in two-stage treatments carried out in media made up of formic acid, water and hydrogen peroxide under selected operational conditions. The pulps were subjected to Totally Chlorine Free (TCF) bleaching sequences. Alkaline treatments, oxygen delignification, ozone stages and treatments with peroxyacids were assayed in order to reach the target values for dissolving pulps. Under the best conditions, a fully bleached pulp (91.6% ISO brightness) with SCAN viscosity of 649 ml/g and favourable molar mass distribution was obtained.

Kinetics of the oxidation of dimethyl sulfoxide with aqueous hydrogen peroxide catalyzed by sodium tungstate

1981 ◽  
Vol 59 (4) ◽  
pp. 718-722 ◽  
Author(s):  
Yoshiro Ogata ◽  
Kazushige Tanaka
Keyword(s):  
Hydrogen Peroxide ◽  
Dimethyl Sulfoxide ◽  
Sodium Tungstate ◽  
Catalytic Amount ◽  
Active Oxygen ◽  
Probable Mechanism ◽  
Polarographic Study ◽  
Aqueous Hydrogen Peroxide ◽  
First Order ◽  
Kinetics Of

The oxidation of dimethyl sulfoxide (DMSO) by hydrogen peroxide in the presence of a catalytic amount of sodium tungstate (Na2WO4) has been studied kinetically by means of iodometry of hydrogen peroxide. The reaction is first-order with respect to the substrate and the catalyst, but independent of the concentration of hydrogen peroxide which is present in excess of the catalyst. The polarographic study implies that in solutions two main kinds of peroxytungstic acids (H2WO5 and H2WO8) are formed which contain active oxygen in ratios (active oxygen):(Na2WO4) of 1:1 and 4:1, respectively. The effect of acidity on the oxidation rate and a probable mechanism involving a rate-determining attack of peroxytungstic acids are discussed.

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