AMNE:(TEKNIK OCH TEKNOLOGIER Kemiteknik Kemiska processer)
Search: AMNE:(TEKNIK OCH TEKNOLOGIER Kemiteknik Kemiska processer) > (2015-2019) > Suppressed oxygen e...
- 5 of 841
- Previous record
- Next record
- To hitlist
Suppressed oxygen evolution during chlorateformation from hypochlorite in the presenceof chromium(VI)
-
- Endrodi, Balázs (author)
- KTH,Tillämpad elektrokemi,Department of Physical Chemistry and Materials Science, University of Szeged, Szeged, Hungary
-
- Sandin, Staffan, 1984- (author)
- KTH,Tillämpad elektrokemi
- Wildlock, Mats (author)
- show more...
- Simic, Nina (author)
- show less...
- (creator_code:org_t)
- 2019-02-05
- 2019
- English.
- In: Journal of chemical technology and biotechnology (1986). - : Wiley. - 0268-2575 .- 1097-4660. ; 94:5, s. 1520-1527
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- BACKGROUND: Chromium(VI) is a crucial electrolyte component in industrial chlorate production. Due to its toxicity, iturgently needs to be abandoned and its functions fulfilled by new solutions. In the industrial production of sodium chlorate,homogeneous decomposition of the hypochlorite intermediate to chlorate is a key step. As a competing loss reaction,hypochlorite can decompose to oxygen. How chromium(VI) affects these reactions is not well understood.RESULTS: This work shows, for the first time, that chromium(VI) selectively accelerates the chlorate formation from hypochloriteboth in dilute and concentrated, industrially relevant solutions. The effect of the ionic strength and the specific contributionof different electrolyte components were systematically studied. By simultaneously measuring the concentration decayof hypochlorite (UV–vis spectroscopy) and the oxygen formation (mass spectrometry), both the rate and the selectivity of thereactions were evaluated.CONCLUSION: In the presence of chromium(VI) the hypochlorite decomposition is described by the sum of an uncatalyzedand a parallel catalyzed reaction, where oxygen only forms in the uncatalyzed reaction. When removing chromium(VI),the homogeneous oxygen formation increases, causing economic and safety concerns. The need for a catalyst selectivefor chlorate formation is emphasized.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
Keyword
- sodium chlorate; chemical engineering; industrial electrochemistry; sodium dichromate; hypochlorite decomposition; selective catalysis
- Chemical Engineering
- Kemiteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Journal of chemical technology and biotechnology (1986) (Search for host publication in LIBRIS)
To the university's database
- 5 of 841
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Endrodi, Balázs
- Sandin, Staffan, ...
- Wildlock, Mats
- Simic, Nina
- Cornell, Ann M., ...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Chemical Science ...
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Chemical Enginee ...
- and Other Chemical E ...
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Chemical Enginee ...
- and Chemical Process ...
- Articles in the publication
- Journal of chemi ...
- By the university
- Royal Institute of Technology
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
