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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Novel insights on magadiite disaggregation: a multitechnique study on thermal stability
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Novel insights on magadiite disaggregation: a multitechnique study on thermal stability

机译:辉石分解的新见解:热稳定性的多技术研究

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Disaggregated magadiite was obtained through ion-exchange in acidic media from magadiite intercalated in the synthesis with cetyltrimethylamonium cations. The combination of Soxhlet extraction and ultrasound during the procedure resulted in different morphology and different properties when compared with the pristine material, as observed by SEM. Thermal and surface properties studies performed by VT-XRD, TG, VT-FTIR, HETCOR SS-NMR, and N2 physisorption show that disaggregated magadiite presents a basal space of 1.35 nm and that [SiO4] entities of adjacent magadiite silicate layers connect during ion-exchange under ultrasound. Despite these bonding events, the surface area increased from 20-26 m~2 g~(-1) in CTA-magadiite to 55-72 m~2 g~(-1) in disaggregated magadiite.
机译:通过在酸性介质中进行离子交换,从在合成过程中插入有十六烷基三甲基铵阳离子的菱镁矿中获得分解的菱镁矿。通过扫描电镜观察,与原始材料相比,该过程中索氏提取与超声的结合导致了不同的形态和不同的性能。通过VT-XRD,TG,VT-FTIR,HETCOR SS-NMR和N2物理吸附进行的热和表面性质研究表明,分解的辉铁矿呈现1.35 nm的基本空间,相邻的辉铁硅酸盐硅酸盐层的[SiO4]实体在离子作用期间连接-在超声下交换。尽管发生了这些键合事件,但表面积从CTA-镁铁矿中的20-26 m〜2 g〜(-1)增加到了分解的镁铁矿中的55-72 m〜2 g〜(-1)。

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