阳离子表面活性剂对Ru(III)催化高铁酸盐氧化L-谷氨酸的影响

IF 1.5 4区 化学 Q4 CHEMISTRY, PHYSICAL
Abhishek Srivastava, Madhav Krishna Goswami, Rajeev Kumar Dohare, Neetu Srivastava, Krishna Srivastava
{"title":"阳离子表面活性剂对Ru(III)催化高铁酸盐氧化L-谷氨酸的影响","authors":"Abhishek Srivastava,&nbsp;Madhav Krishna Goswami,&nbsp;Rajeev Kumar Dohare,&nbsp;Neetu Srivastava,&nbsp;Krishna Srivastava","doi":"10.1002/kin.21646","DOIUrl":null,"url":null,"abstract":"<p>In CTAB micellar medium, the kinetic investigation of Ru(III) promoted oxidation of L-glutamic acid (Glu) by [Fe(CN)<sub>6</sub>]<sup>3−</sup> was carried out by recording the decline in absorbance at 420 nm, which corresponds to [Fe(CN)<sub>6</sub>]<sup>3−</sup>. By adjusting one variable at a time, the progression of the reaction has been inspected as a function of [OH<sup>−</sup>], ionic strength, [CTAB], [Ru<sup>3+</sup>], [Glu], [Fe(CN)<sub>6</sub><sup>3−</sup>], and temperature using the pseudo-first-order condition. The findings demonstrate that [OH<sup>−</sup>], [CTAB], and [Glu] are the key parameters that have a discernible impact on reaction rate. In the studied concentration range of Ru(III), [Fe(CN)<sub>6</sub>]<sup>3−</sup>, and at lower [Glu] and [OH<sup>−</sup>], the reaction displays first-order kinetics. The incremental trend in reaction rate with electrolyte concentration demonstrates a positive salt effect. CTAB substantially catalyzes the process, and after reaching a maximum, the rate remains nearly constant at increased [CTAB]. The observed decline in the CMC of CTAB may be caused by the reduced repulsion between the positively charged heads of the surfactant molecules caused by the negatively charged OH<sup>−</sup>, and [Fe(CN)<sub>6</sub>]<sup>3−</sup>. The activation parameters also support the outer-sphere electron transfer mechanism as recommended by us.</p>","PeriodicalId":13894,"journal":{"name":"International Journal of Chemical Kinetics","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Effect of cationic surfactant on Ru(III) catalyzed L-glutamic acid oxidation by hexacyanoferrate(III)\",\"authors\":\"Abhishek Srivastava,&nbsp;Madhav Krishna Goswami,&nbsp;Rajeev Kumar Dohare,&nbsp;Neetu Srivastava,&nbsp;Krishna Srivastava\",\"doi\":\"10.1002/kin.21646\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In CTAB micellar medium, the kinetic investigation of Ru(III) promoted oxidation of L-glutamic acid (Glu) by [Fe(CN)<sub>6</sub>]<sup>3−</sup> was carried out by recording the decline in absorbance at 420 nm, which corresponds to [Fe(CN)<sub>6</sub>]<sup>3−</sup>. By adjusting one variable at a time, the progression of the reaction has been inspected as a function of [OH<sup>−</sup>], ionic strength, [CTAB], [Ru<sup>3+</sup>], [Glu], [Fe(CN)<sub>6</sub><sup>3−</sup>], and temperature using the pseudo-first-order condition. The findings demonstrate that [OH<sup>−</sup>], [CTAB], and [Glu] are the key parameters that have a discernible impact on reaction rate. In the studied concentration range of Ru(III), [Fe(CN)<sub>6</sub>]<sup>3−</sup>, and at lower [Glu] and [OH<sup>−</sup>], the reaction displays first-order kinetics. The incremental trend in reaction rate with electrolyte concentration demonstrates a positive salt effect. CTAB substantially catalyzes the process, and after reaching a maximum, the rate remains nearly constant at increased [CTAB]. The observed decline in the CMC of CTAB may be caused by the reduced repulsion between the positively charged heads of the surfactant molecules caused by the negatively charged OH<sup>−</sup>, and [Fe(CN)<sub>6</sub>]<sup>3−</sup>. The activation parameters also support the outer-sphere electron transfer mechanism as recommended by us.</p>\",\"PeriodicalId\":13894,\"journal\":{\"name\":\"International Journal of Chemical Kinetics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2023-04-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Chemical Kinetics\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/kin.21646\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Chemical Kinetics","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/kin.21646","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 2

摘要

在CTAB胶束介质中,通过记录[Fe(CN)6]3−对应的420 nm吸光度下降,对Ru(III)促进l -谷氨酸(Glu)被[Fe(CN)6]3−氧化的动力学研究。通过一次调整一个变量,利用拟一阶条件考察了[OH−]、离子强度、[CTAB]、[Ru3+]、[Glu]、[Fe(CN)63−]和温度对反应过程的影响。结果表明,[OH−]、[CTAB]和[Glu]是影响反应速率的关键参数。在Ru(III)、[Fe(CN)6]3−以及较低的[Glu]和[OH−]浓度范围内,反应表现为一级动力学。反应速率随电解质浓度的增加呈现正盐效应。CTAB在很大程度上催化了这一过程,并且在达到最大值后,在增加时速率几乎保持不变[CTAB]。CTAB的CMC下降可能是由于带负电荷的OH−和[Fe(CN)6]3−引起的表面活性剂分子正电荷头之间的斥力减少所致。激活参数也支持我们推荐的外球电子转移机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of cationic surfactant on Ru(III) catalyzed L-glutamic acid oxidation by hexacyanoferrate(III)

In CTAB micellar medium, the kinetic investigation of Ru(III) promoted oxidation of L-glutamic acid (Glu) by [Fe(CN)6]3− was carried out by recording the decline in absorbance at 420 nm, which corresponds to [Fe(CN)6]3−. By adjusting one variable at a time, the progression of the reaction has been inspected as a function of [OH], ionic strength, [CTAB], [Ru3+], [Glu], [Fe(CN)63−], and temperature using the pseudo-first-order condition. The findings demonstrate that [OH], [CTAB], and [Glu] are the key parameters that have a discernible impact on reaction rate. In the studied concentration range of Ru(III), [Fe(CN)6]3−, and at lower [Glu] and [OH], the reaction displays first-order kinetics. The incremental trend in reaction rate with electrolyte concentration demonstrates a positive salt effect. CTAB substantially catalyzes the process, and after reaching a maximum, the rate remains nearly constant at increased [CTAB]. The observed decline in the CMC of CTAB may be caused by the reduced repulsion between the positively charged heads of the surfactant molecules caused by the negatively charged OH, and [Fe(CN)6]3−. The activation parameters also support the outer-sphere electron transfer mechanism as recommended by us.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
3.30
自引率
6.70%
发文量
74
审稿时长
3 months
期刊介绍: As the leading archival journal devoted exclusively to chemical kinetics, the International Journal of Chemical Kinetics publishes original research in gas phase, condensed phase, and polymer reaction kinetics, as well as biochemical and surface kinetics. The Journal seeks to be the primary archive for careful experimental measurements of reaction kinetics, in both simple and complex systems. The Journal also presents new developments in applied theoretical kinetics and publishes large kinetic models, and the algorithms and estimates used in these models. These include methods for handling the large reaction networks important in biochemistry, catalysis, and free radical chemistry. In addition, the Journal explores such topics as the quantitative relationships between molecular structure and chemical reactivity, organic/inorganic chemistry and reaction mechanisms, and the reactive chemistry at interfaces.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信