Thermoacid Behavior of Serpentinite of the Zhitikarinsky Deposit (Kazakhstan).

IF 4.2 2区化学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Molecules Pub Date : 2024-08-22 DOI:10.3390/molecules29163965

Abdrazak Auyeshov, Kazhymuhan Arynov, Chaizada Yeskibayeva, Kurmanbek Alzhanov, Yerkebulan Raiymbekov

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Abstract

Thermoacid behavior of serpentinite from the Zhitikarinsky field (g. Zhitikara, Kazakhstan). The character of dissolution of heat-treated serpentinite in a narrow temperature range of 600-750 °C is investigated, where the crystal lattice of the structural structure of chrysotile in sulfuric acid is destroyed. The X-ray and chemical analysis of the products of dissolution of heat-treated serpentinite at 600 °C, 725 °C and 750 °C in sulfuric acid solution show that the reason for the increase in the reactivity of heat-treated serpentinite at 725 °C and 750 °C with respect to the acidic medium and the degree of magnesium extraction into sulfate solution is the formation of periclase (MgO) in the serpentinite composition after heat treatment of them within a temperature range of 600-750 °C. The results were discussed using data obtained by conducting a thermodynamic evaluation of probable reactions during the thermoacid treatment of serpentinite, phase compressions of heat-treated serpentinite at 600-750 °C, and after its acid treatment at 1.0 M H₂SO₄.

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Zhitikarinsky 矿床蛇绿岩（哈萨克斯坦）的热酸行为。

Zhitikarinsky 田（哈萨克斯坦，G. Zhitikara）蛇纹石的热酸行为。研究了在 600-750 °C 的狭窄温度范围内经过热处理的蛇纹石的溶解特性，在这一温度范围内，温石棉结构的晶格在硫酸中被破坏。对 600 ℃、725 ℃ 和 750 ℃ 热处理蛇纹石在硫酸溶液中的溶解产物进行的 X 射线和化学分析表明，725 ℃ 和 750 ℃ 热处理蛇纹石对酸性介质的反应性和镁被萃取到硫酸溶液中的程度增加的原因是，在 600-750 ℃ 的温度范围内对它们进行热处理后，在蛇纹石成分中形成了过氧化镁（MgO）。通过对蛇纹石热酸处理过程中可能发生的反应、600-750 ℃热处理蛇纹石的相压缩以及在 1.0 M H2SO4 酸处理后进行热力学评估所获得的数据，对结果进行了讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Molecules 化学-有机化学

CiteScore

7.40

自引率

8.70%

发文量

7524

审稿时长

1.4 months

期刊介绍： Molecules (ISSN 1420-3049, CODEN: MOLEFW) is an open access journal of synthetic organic chemistry and natural product chemistry. All articles are peer-reviewed and published continously upon acceptance. Molecules is published by MDPI, Basel, Switzerland. Our aim is to encourage chemists to publish as much as possible their experimental detail, particularly synthetic procedures and characterization information. There is no restriction on the length of the experimental section. In addition, availability of compound samples is published and considered as important information. Authors are encouraged to register or deposit their chemical samples through the non-profit international organization Molecular Diversity Preservation International (MDPI). Molecules has been launched in 1996 to preserve and exploit molecular diversity of both, chemical information and chemical substances.