Abstract Zn Al Layered Double Hydroxides with nitrate as interlamellar anion have been synthesized in the presence of different amines [methylamine (MMA), dimethylamine (DMA) and trimethylamine (TMA)] in the coprecipitation medium. Then, the solids were submitted to hydrothermal post-treatment by conventional heating and microwave assisted heating in order to improve the crystallinity and the properties of the solids. The samples were characterized by element chemical analysis, powder X-ray diffraction, FT-IR spectroscopy, thermal analysis, specific surface area analysis, SEM, and particle size distribution. The results showed an enhancement of their crystallinity when the samples had been synthetized in the presence of DMA, such a crystallinity degree improving after a long hydrothermal treatment. Although aggregates were formed, they disaggregated easily after short ultrasound treatments, and thus it was possible to obtain solid with a narrow particle size distribution.

中文翻译：

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胺存在下Zn、Al层状双氢氧化物的合成

摘要 在共沉淀介质中，在不同胺类[甲胺(MMA)、二甲胺(DMA)和三甲胺(TMA)]存在下，合成了以硝酸盐为层间阴离子的锌铝层状双氢氧化物。然后，通过常规加热和微波辅助加热对固体进行水热后处理，以提高固体的结晶度和性能。通过元素化学分析、粉末X射线衍射、FT-IR光谱、热分析、比表面积分析、SEM和粒度分布对样品进行表征。结果表明，当样品在 DMA 存在下合成时，它们的结晶度提高，这种结晶度在长时间水热处理后得到提高。虽然形成了聚合体，