Kinetics and mechanism of the oxidation of vanadium(III) by chlorate ion, chlorine dioxide, chlorous acid, and hypochlorous acid

1976 ◽  
Vol 15 (5) ◽  
pp. 1002-1006 ◽  
Author(s):  
Richard D. Cornelius ◽  
Gilbert. Gordon
Keyword(s):  
Chlorine Dioxide ◽  
Hypochlorous Acid ◽  
Kinetics And Mechanism ◽  
Chlorous Acid

Mécanisme des réactions du chlorite et du dioxyde de chlore. 1. Stoechiométrie des réactions du chlorite et cinétique en présence d'ortho-tolidine

1981 ◽  
Vol 59 (8) ◽  
pp. 1177-1187 ◽  
Author(s):  
Guy Schmitz ◽  
Henri Rooze
Keyword(s):  
Chlorine Dioxide ◽  
Perchloric Acid ◽  
Hypochlorous Acid ◽  
Chloride Ions ◽  
Sodium Chlorite ◽  
Kinetic Investigation ◽  
Acid Solutions ◽  
Fast Reaction ◽  
Rate Determining Step ◽  
Chlorous Acid

The relative amount of chlorine dioxide produced by the disproportionation of sodium chlorite increases as the concentrations of chlorite and chloride ions increase. It passes through a minimum when the concentration of perchloric acid varies from 2 M to 0.01 M. The fast reaction between chlorite and hypochlorous acid is a part of the mechanism of this disproportionation and its stoichiometry was also investigated. The relative amount of chlorine dioxide produced depends on the method of mixing the reactants and on the acidity. It increases if the concentration of chlorite increases and can exceed the amount predicted by:[Formula: see text]Ortho-tolidine reacts very rapidly with chlorine and with chlorine dioxide but not with chlorous acid. In perchloric acid solutions (pH < 2.5) the product of its oxidation has a considerable absorption with a maximum at 440 nm (ε = 59700 M−1 cm−1). Chlorine reacts more rapidly with ortho-tolidine than with chlorous acid. The kinetic investigation of the disproportionation of chlorous acid is thus simplified by the use of ortho-tolidine. With added chloride ions the rate determining step is HClO2 + Cl− + H+ → 2HClO with a rate constant[Formula: see text]The most reliable values for the free enthalpy of formation of oxychlorine compounds are selected from the literature.

Mechanism Involving Hydrogen Sulfite Ions, Chlorite Ions, and Hypochlorous Acid as Key Intermediates of the Autocatalytic Chlorine Dioxide-Thiourea Dioxide Reaction

2015 ◽  
Vol 2015 (30) ◽  
pp. 5011-5020 ◽  
Author(s):  
Ying Hu ◽  
Attila K. Horváth ◽  
Sasa Duan ◽  
György Csekő ◽  
Sergei V. Makarov ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Hypochlorous Acid ◽  
Thiourea Dioxide ◽  
Chlorite Ions ◽  
Sulfite Ions

Kinetics and Mechanism of the Oxidation of Pentathionate Ion by Chlorine Dioxide in a Slightly Acidic Medium

2014 ◽  
Vol 118 (8) ◽  
pp. 1293-1299 ◽  
Author(s):  
Li Xu ◽  
György Csekő ◽  
Andrea Petz ◽  
Attila K. Horváth
Keyword(s):  
Chlorine Dioxide ◽  
Acidic Medium ◽  
Kinetics And Mechanism

scholarly journals Tertiary amine-catalyzed generation of chlorine dioxide from hypochlorous acid and chlorite ions

2020 ◽  
Author(s):  
Estefania Isaza Ferro ◽  
Jordan Perrin ◽  
Owain George John Dawson ◽  
Tapani Vuorinen
Keyword(s):  
Chlorine Dioxide ◽  
Tertiary Amine ◽  
Hypochlorous Acid ◽  
Suitable Candidate ◽  
Rate Limiting Step ◽  
Limiting Step ◽  
Chlorite Ions ◽  
The Stability ◽  
Rate Limiting

AbstractThe reaction between hypochlorous acid and chlorite ions is the rate limiting step for in situ chlorine dioxide regeneration. The possibility of increasing the speed of this reaction was analyzed by the addition of tertiary amine catalysts in the system at pH 5. Two amines were tested, DABCO (1,4-diazabicyclo[2.2.2]octane) and its derivative CEM-DABCO (1-carboethoxymethyl-1-azonia-4-aza-bicyclo[2.2.2]octane chloride). The stability of the catalysts in the presence of both reagents and chlorine dioxide was measured, with CEM-DABCO showing to be highly stable with the mentioned chlorine species, whereas DABCO was rapidly degraded by chlorine dioxide. Hence, CEM-DABCO was chosen as a suitable candidate to catalyze the reaction of hypochlorous acid with chlorite ions and it significantly increased the speed of this reaction even at low catalyst dosages. This research opens the door to a faster regeneration of chlorine dioxide and an improved efficiency in chlorine dioxide treatments.

scholarly journals Disinfection efficiency of hospital infectious disease wards with chlorine dioxide and hypochlorous acid

Aerobiologia ◽  
2020 ◽  
Author(s):  
Ming-Chun Lu ◽  
Po-Lin Chen ◽  
Da-Ji Huang ◽  
Chih-Kuo Liang ◽  
Ching-Shan Hsu ◽  
...  
Keyword(s):  
Infectious Disease ◽  
Chlorine Dioxide ◽  
Hypochlorous Acid

ChemInform Abstract: Kinetics and Mechanism of the Oxidation of Thiourea by Chlorine Dioxide.

ChemInform ◽  
2010 ◽  
Vol 24 (15) ◽  
pp. no-no
Author(s):  
G. RABAI ◽  
R. T. WANG ◽  
K. KUSTIN
Keyword(s):  
Chlorine Dioxide ◽  
Kinetics And Mechanism

scholarly journals Inactivation Kinetics and Mechanism of a Human Norovirus Surrogate on Stainless Steel Coupons via Chlorine Dioxide Gas

2015 ◽  
Vol 82 (1) ◽  
pp. 116-123 ◽  
Author(s):  
Jia Wei Yeap ◽  
Simran Kaur ◽  
Fangfei Lou ◽  
Erin DiCaprio ◽  
Mark Morgan ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Chlorine Dioxide ◽  
Plaque Assay ◽  
Kinetics And Mechanism ◽  
Inactivation Kinetics ◽  
Human Norovirus ◽  
Effective Measure ◽  
Food Contact ◽  
Food Contact Surfaces ◽  
Contact Surfaces

ABSTRACTAcute gastroenteritis caused by human norovirus is a significant public health issue. Fresh produce and seafood are examples of high-risk foods associated with norovirus outbreaks. Food contact surfaces also have the potential to harbor noroviruses if exposed to fecal contamination, aerosolized vomitus, or infected food handlers. Currently, there is no effective measure to decontaminate norovirus on food contact surfaces. Chlorine dioxide (ClO2) gas is a strong oxidizer and is used as a decontaminating agent in food processing plants. The objective of this study was to determine the kinetics and mechanism of ClO2gas inactivation of a norovirus surrogate, murine norovirus 1 (MNV-1), on stainless steel (SS) coupons. MNV-1 was inoculated on SS coupons at the concentration of 107PFU/coupon. The samples were treated with ClO2gas at 1, 1.5, 2, 2.5, and 4 mg/liter for up to 5 min at 25°C and a relative humidity of 85%, and virus survival was determined by plaque assay. Treatment of the SS coupons with ClO2gas at 2 mg/liter for 5 min and 2.5 mg/liter for 2 min resulted in at least a 3-log reduction in MNV-1, while no infectious virus was recovered at a concentration of 4 mg/liter even within 1 min of treatment. Furthermore, it was found that the mechanism of ClO2gas inactivation included degradation of viral protein, disruption of viral structure, and degradation of viral genomic RNA. In conclusion, treatment with ClO2gas can serve as an effective method to inactivate a human norovirus surrogate on SS contact surfaces.

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