Investigation of halloysite thermal decomposition through differential thermal analysis (DTA): Mechanism and kinetics assessment

IF 3.2 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Journal of the Indian Chemical Society Pub Date : 2024-10-05 DOI:10.1016/j.jics.2024.101413
Amina Raghdi , Menad Heraiz , Mohammed Rasheed , Ahcen Keziz
{"title":"Investigation of halloysite thermal decomposition through differential thermal analysis (DTA): Mechanism and kinetics assessment","authors":"Amina Raghdi ,&nbsp;Menad Heraiz ,&nbsp;Mohammed Rasheed ,&nbsp;Ahcen Keziz","doi":"10.1016/j.jics.2024.101413","DOIUrl":null,"url":null,"abstract":"<div><div>The study focused on analysing the kinetics of halloysite decomposition using the differential thermal analysis (DTA) technique. Tests were carried out across a temperature span from ambient temperature to 1673 K, employing heating rates spanning from 5 to 20 °C.min<sup>−1</sup>. X-ray diffraction and Fourier transform infrared spectroscopy (FT-IR) were utilized to identify the phases formed at different temperatures. Activation energies for halloysite decomposition were determined through isothermal and non-isothermal treatments, yielding values of approximately 151.68 kJ mol<sup>−1</sup> and 173.14 kJ mol<sup>−1</sup>, respectively. The Ligero method's Avrami constant parameter (<span><math><mrow><mi>n</mi></mrow></math></span>) and the Matusita method's numerical factor parameter (<span><math><mrow><mi>m</mi></mrow></math></span>), linked to crystal growth dimensions, were both around 1.5. These findings indicate that the degradation of halloysite is primarily governed by bulk nucleation, succeeded by the 3-dimensional growth of <em>meta</em>-halloysite characterized by polyhedron-like structure, regulated by diffusion from a consistent number of nuclei. The frequency factor for halloysite dehydroxylation was established at 8.48 × 10⁸ s⁻<sup>1</sup>.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"101 11","pages":"Article 101413"},"PeriodicalIF":3.2000,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Indian Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0019452224002930","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

The study focused on analysing the kinetics of halloysite decomposition using the differential thermal analysis (DTA) technique. Tests were carried out across a temperature span from ambient temperature to 1673 K, employing heating rates spanning from 5 to 20 °C.min−1. X-ray diffraction and Fourier transform infrared spectroscopy (FT-IR) were utilized to identify the phases formed at different temperatures. Activation energies for halloysite decomposition were determined through isothermal and non-isothermal treatments, yielding values of approximately 151.68 kJ mol−1 and 173.14 kJ mol−1, respectively. The Ligero method's Avrami constant parameter (n) and the Matusita method's numerical factor parameter (m), linked to crystal growth dimensions, were both around 1.5. These findings indicate that the degradation of halloysite is primarily governed by bulk nucleation, succeeded by the 3-dimensional growth of meta-halloysite characterized by polyhedron-like structure, regulated by diffusion from a consistent number of nuclei. The frequency factor for halloysite dehydroxylation was established at 8.48 × 10⁸ s⁻1.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
通过差热分析 (DTA) 研究埃洛石的热分解:机制和动力学评估
研究重点是利用差热分析(DTA)技术分析埃洛石的分解动力学。测试的温度跨度从环境温度到 1673 K,加热速率从 5 到 20 °C.min-1 不等。利用 X 射线衍射和傅立叶变换红外光谱(FT-IR)来确定在不同温度下形成的相。通过等温和非等温处理确定了埃洛石分解的活化能,其值分别约为 151.68 kJ mol-1 和 173.14 kJ mol-1。与晶体生长尺寸相关的 Ligero 方法的阿夫拉米常数参数(n)和 Matusita 方法的数值因子参数(m)都在 1.5 左右。这些研究结果表明,埃洛石的降解主要是由块状成核决定的,随后是以多面体结构为特征的元埃洛石的三维生长,并由数量一致的晶核扩散调节。埃洛石脱羟基的频率因子被确定为 8.48 × 10⁸ s-1。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
3.50
自引率
7.70%
发文量
492
审稿时长
3-8 weeks
期刊介绍: The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.
期刊最新文献
Optimizing therapeutics: A novel mutual prodrug of ketoprofen and Chlorzoxazone for enhanced efficacy and safety Synthesis, X-ray analysis, specific electric conductivity study and antioxidant activity of novel compound based on 3-(1-phenyl-2,3-dimethylpyrazolone-5)azopentadione-2,4 Synthesis, characterization, insecticidal activity and antibacterial evaluation of some heterocyclic compounds containing 1,2,3-triazoles moiety Adsorption study of CO and O2 on Au5-x-yAgxCuy [x, y = 1, 3] trimetallic nanoclusters Photocatalytic and sensing studies of a new metal-organic framework of Ca(II) with phenylmalonic acid
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1