Competitive reactions in Cl− solutions treated by plasma-supplied O atoms

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F20%3A00536059" target="_blank" >RIV/61389021:_____/20:00536059 - isvavai.cz</a>

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1361-6463/abb5d6" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6463/abb5d6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6463/abb5d6" target="_blank" >10.1088/1361-6463/abb5d6</a>

Result language

angličtina

Original language name

Competitive reactions in Cl− solutions treated by plasma-supplied O atoms

Original language description

Reactions accompanying the hypochlorite formation in Cl− solutions oxidized by plasma-supplied O atoms were studied. The concentration of oxychlorine compounds from reaction of O atoms with solutions of NaCl, NaOCl and NaClO2 was measured. The concentration dependence of O + Cl− reaction rate was evaluated using the simplified kinetic model leading to estimation of the 2nd order rate constant, k = 1.64 ± 0.01 × 105 M−1s−1. The limiting reaction rate at highly concentrated NaCl corresponds well with the delivery rate of O atoms to the gas-liquid interface calculated from the previously measured O concentration at the plasma jet outlet. Virtually all plasma-supplied O atoms can be captured by Cl− ions in highly concentrated solutions. The measurements confirmed the reactions O + OCl−, and O + ClO2− as loss channels decreasing the hypochlorite production in O-treated Cl− solutions. These loss channels are less effective at more acidic pH, where the formation of ClO2− is minimized and as a consequence, also the solution post-discharge reactivity. The validity of described reaction system was confirmed by chemical kinetics modelling. The fitted rate coefficients for the O reactions with ionic Cl forms were 3–4 orders of magnitude lower than those predicted in the literature.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/GA19-25026S" target="_blank" >GA19-25026S: Characteristics of chemically reactive liquids produced by non-equilibrium plasma</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Physics D-Applied Physics

ISSN

0022-3727

e-ISSN

—

Volume of the periodical

53

Issue of the periodical within the volume

50

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

505206

UT code for WoS article

000576999100001

EID of the result in the Scopus database

2-s2.0-85095832473