Change search
ReferencesLink to record
Permanent link

Direct link
Selectivity between Oxygen and Chlorine Evolution in the Chlor-Alkali and Chlorate Processes
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0002-3634-8856
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0001-5816-2924
2016 (English)In: Chemical Reviews, ISSN 0009-2665, E-ISSN 1520-6890, Vol. 116, no 5, 2982-3028 p.Article, review/survey (Refereed) PublishedText
Abstract [en]

Chlorine gas and sodium chlorate are two base chemicals produced through electrolysis of sodium chloride brine which find uses, in many areas of industrial chemistry. Although the industrial production of these chemicals started over 100 years ago, there are still factors that limit the energy efficiencies of the processes. This review focuses on the unwanted production of oxygen gas, which decreases the charge yield by up to 5%. Understanding the factors that control the rate of oxygen production requires understanding of both chemical reactions occurring in the electrolyte, as well as surface reactions occurring on the anodes. The dominant anode material used in chlorate and chlor-alkali production is the dimensionally stable anode (DSA), Ti coated by a mixed oxide of RuO2 and TiO2. Although the selectivity for chlorine evolution on DSA is high, the fundamental reasons for this high selectivity are just now becoming elucidated. This review summarizes the research, since the early 1900s until today, concerning the selectivity between chlorine and oxygen evolution in chlorate and chlor-alkali production. It covers experimental as well as theoretical studies and highlights the relationships between process conditions, electrolyte composition, the material properties of the anode, and the selectivity for oxygen formation.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 116, no 5, 2982-3028 p.
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-185063DOI: 10.1021/acs.chemrev.5b00389ISI: 000371947300005PubMedID: 26879761ScopusID: 2-s2.0-84960532844OAI: diva2:920052

QC 20160415

Available from: 2016-04-15 Created: 2016-04-11 Last updated: 2016-04-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMedScopus

Search in DiVA

By author/editor
Karlsson, Rasmus K. B.Cornell, Ann
By organisation
Applied Electrochemistry
In the same journal
Chemical Reviews
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 20 hits
ReferencesLink to record
Permanent link

Direct link