化学处理天然高岭土的结构、介电和伽马屏蔽性能评估

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-12-10 DOI:10.22068/IJMSE.2114

A. Al-Reyahi, Salem Yahya Degs, A. Issa, Z. Khattari, Mohammed Abu Al Sayyed

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引用次数: 2

摘要

天然粘土样品(51%高岭石)的结构特性是量身定制的，以适应特定的应用。与硅离子相比，H2SO4和NaOH (1.0 M)处理导致结构改变和Al离子的显著释放。根据XRD分析，化学处理导致结构改变。FTIR分析还表明，处理后的极性表面基团密度较高，影响了相应的介电行为。介电测量表明了它们在频率相关的辩证绝缘子应用中的适用性。酸处理的高岭石在10和1000 Hz下是一种很有前途的电介质。质量衰减系数(μ/ρ)在12.098 ~ 12.182 cm2/g之间，在10 keV下形成10 cm的高半值层，高岭石和其他处理过的形式足以作为屏蔽材料。

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Assessment of Structure, Dielectric and Gamma-Shielding Properties of Chemically Treated Natural Kaolinitic Clay

The structural properties of a natural clay sample (51% kaolinite) were tailored to suit specific applications. H2SO4 and NaOH (1.0 M) treatment caused structural alterations and a significant release of Al ions compared to Si ions. Chemical treatment caused structural alterations, according to XRD analysis. FTIR analysis also indicated higher density of polar surface groups upon treatment which affected the corresponding dielectric behavior. Dielectric measurements showed their suitability in the frequency dependent dialectical insulator applications. Acid treated kaolinite was a promising dielectric at 10 and 1000 Hz. With appropriate mass attenuation coefficients (μ/ρ) of 12.098-12.182 cm2/g and a high half value layer of 10 cm at 10 keV, kaolinite and other treated forms were adequate to act shielding material.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.