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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >A Simple Mechanochemical Route to Layered Double Hydroxides: Synthesis of Hydrotalcite-Like Mg-Al-NO3-LDH by Manual Grinding in a Mortar
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A Simple Mechanochemical Route to Layered Double Hydroxides: Synthesis of Hydrotalcite-Like Mg-Al-NO3-LDH by Manual Grinding in a Mortar

机译：层状双氢氧化物的简单机械化学路线：通过在砂浆中手动研磨合成类似水滑石的Mg-Al-NO3-LDH

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摘要

Hydrotalcite-like Mg-Al-NO3-layered double hydroxide (LDH) was successfully prepared in a mortar by manually grinding the hydrated magnesium and aluminum nitrate salts with sodium hydroxide. Various techniques, including XRD, MAS NMR, FTIR, SEM; thermogravimetric and differential thermal analyses (TGA,DTA), Surface area and zeta potential measurements were used to establish a correlation between the LDH samples prepared in the mortar and by co-precipitation. The LDH prepared in the mortar showed all the characteristics of a layered structure but with a lower crystallinity. This product was tested for its anion exhange property with tetraborate anions and 52% of the theoretical exchange capacity was reached. The mortar route does not require heating/refluxing treatment, CO-free atmosphere and solvent as in the conventional preparation methods and allows obtaining LDHs in a short reaction time.
机译：通过用氢氧化钠手动研磨水合镁盐和硝酸铝盐，在研钵中成功制备了类似水滑石的Mg-Al-NO3层状双氢氧化物（LDH）。各种技术，包括XRD，MAS NMR，FTIR，SEM;使用热重分析和差热分析（​​TGA，DTA），表面积和Zeta电位测量来建立砂浆中制备的LDH样品和共沉淀过程中的相关性。在灰浆中制备的LDH显示出层状结构的所有特征，但结晶度较低。测试了该产物与四硼酸根阴离子的阴离子交换性能，达到了理论交换容量的52％。砂浆路线不需要像常规制备方法中那样的加热/回流处理，无CO的气氛和溶剂，并且可以在短的反应时间内获得LDH。

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