Electrocatalytic Aspects of the Chlorate Process: A Voltammetric and DEMS Comparison of RuO2 and DSA Anodes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F18%3A00496385" target="_blank" >RIV/61388955:_____/18:00496385 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1149/2.0241814jes" target="_blank" >http://dx.doi.org/10.1149/2.0241814jes</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1149/2.0241814jes" target="_blank" >10.1149/2.0241814jes</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrocatalytic Aspects of the Chlorate Process: A Voltammetric and DEMS Comparison of RuO2 and DSA Anodes

Popis výsledku v původním jazyce

The behavior of RuO2 and DSA anodes in hypochlorite oxidation is compared to outline limitations of the anode performance in the chlorate process. Both electrode materials oxidize hypochlorite via a radical involving mechanism, which produces overstoichiometric amounts of oxygen and hydrogen peroxide. Regardless of the electrode material the hypochlorite oxidation competes with chlorine evolution for the same surface sites. The hypochlorite oxidation prevails at low ionic strengths and in mildly alkaline media. On RuO2 based electrodes the electrochemical hypochlorite oxidation dominates, while on DSA the electrochemical hypochlorite oxidation is complemented by a catalytic decomposition of hypochlorite forming oxygen and hydrochloric acid. The catalytic hypochlorite decomposition observed for DSA represents a serious impediment for the chlorate process outlining the need of further optimization of the industrial grade anode for the chlorate process. (C) The Author(s) 2018. Published by ECS.

Název v anglickém jazyce

Electrocatalytic Aspects of the Chlorate Process: A Voltammetric and DEMS Comparison of RuO2 and DSA Anodes

Popis výsledku anglicky

The behavior of RuO2 and DSA anodes in hypochlorite oxidation is compared to outline limitations of the anode performance in the chlorate process. Both electrode materials oxidize hypochlorite via a radical involving mechanism, which produces overstoichiometric amounts of oxygen and hydrogen peroxide. Regardless of the electrode material the hypochlorite oxidation competes with chlorine evolution for the same surface sites. The hypochlorite oxidation prevails at low ionic strengths and in mildly alkaline media. On RuO2 based electrodes the electrochemical hypochlorite oxidation dominates, while on DSA the electrochemical hypochlorite oxidation is complemented by a catalytic decomposition of hypochlorite forming oxygen and hydrochloric acid. The catalytic hypochlorite decomposition observed for DSA represents a serious impediment for the chlorate process outlining the need of further optimization of the industrial grade anode for the chlorate process. (C) The Author(s) 2018. Published by ECS.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of the Electrochemical Society

ISSN

0013-4651

e-ISSN

—

Svazek periodika

165

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

"E751"-"E758"

Kód UT WoS článku

000447843000001

EID výsledku v databázi Scopus

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