Anju Agarwal, Gayatri Sharma, C. L. Khandelwal, P. Sharma
{"title":"Kinetics and Mechanism of Oxidation of Mannitol by Sulphato-cerium(IV) Species in Aqueous Acid Medium","authors":"Anju Agarwal, Gayatri Sharma, C. L. Khandelwal, P. Sharma","doi":"10.1080/1028662021000062617","DOIUrl":null,"url":null,"abstract":"The kinetics of oxidation of mannitol by cerium(IV) in sulphuric acid medium have been studied. The spectral analysis of hydrazone derivative of the product indicates the product to be an aldehyde. The substrate forms an intermediate complex with the oxidant as is observed both kinetically and spectrophotometrically. Ce(SO 4 ) 2 has been considered to be the reactive sulphato-cerium(IV) species. The proposed mechanism corresponds to the rate law m d[Ce(IV)] d t = 2 kK [RCH 2 OH][Ce(IV)] (1+ K [RCH 2 OH])(1+ K 3 [ HSO 4 m ]) where R=CH 2 OH(CHOH) 4 . All the rate parameters have been evaluated.","PeriodicalId":54977,"journal":{"name":"Inorganic Reaction Mechanisms","volume":"37 1","pages":"233-239"},"PeriodicalIF":0.0000,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1028662021000062617","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Reaction Mechanisms","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/1028662021000062617","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
The kinetics of oxidation of mannitol by cerium(IV) in sulphuric acid medium have been studied. The spectral analysis of hydrazone derivative of the product indicates the product to be an aldehyde. The substrate forms an intermediate complex with the oxidant as is observed both kinetically and spectrophotometrically. Ce(SO 4 ) 2 has been considered to be the reactive sulphato-cerium(IV) species. The proposed mechanism corresponds to the rate law m d[Ce(IV)] d t = 2 kK [RCH 2 OH][Ce(IV)] (1+ K [RCH 2 OH])(1+ K 3 [ HSO 4 m ]) where R=CH 2 OH(CHOH) 4 . All the rate parameters have been evaluated.
研究了铈在硫酸介质中氧化甘露醇的动力学。该产物的腙衍生物的光谱分析表明该产物为醛。如动力学和分光光度法所观察到的，底物与氧化剂形成中间配合物。Ce(so4) 2被认为是反应性的硫铈(IV)物质。所提出的机理符合速率定律m d[Ce(IV)] d t = 2 kK [rch2 OH][Ce(IV)] (1+ K [rch2 OH])(1+ k3 [hso4 m])，其中R= ch2 OH(CHOH) 4。对所有速率参数进行了计算。
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