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Kinetics and Mechanism of Keggin Type 12-Tungstocobaltate(II) Catalyzed Oxidation of Hexacyanoferrate(II) by Perborate

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1TitleTitle of DocumentKinetics and Mechanism of Keggin Type 12-Tungstocobaltate(II) Catalyzed Oxidation of Hexacyanoferrate(II) by Perborate
2CreatorAuthor's name, affiliation, country D. S. RAJMANE* and G. S. GOKAVI
Department of Chemistry, Shrimant Babasaheb Deshmukh Mahavidyalaya, Atpadi-415301, India
Kinetics and Catalysis Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, India
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Kinetics, Mechanism, Hexacyanoferrate(II) oxidation, Perborate
4DescriptionAbstract The oxidation of hexacyanoferrate(II) by perborate catalyzed by Keggin type [CoIIW12O40]6- has been studied in sulphuric acid medium. The reaction proceeds by the oxidation of [CoIIW12O40]6- to [CoIIIW12O40]5- by hydrogen peroxide, generated by the decomposition of perborate, which then oxidizes hexacyanoferrate(II) to hexacyanoferrate(III) in a rate determining step. The reaction was found to be inhibited by increase in the [H+] due to conversion of active hexacyanoferrate(II) into an inactive protonated form. Decreasing the relative permittivity of the medium increases the rate of the reaction which is attributed to the formation of an outer-sphere complex between the catalyst and active oxidant. The activation parameters were also determined and the values support the proposed mechanism.
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  3 , Number  (4), (2014)
12LanuguageEnglish=en en
13RelationSupp.files
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15CopyrightCopyright and permissions
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