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层间距为1.44 nm层状氢氧化苯甲酸锌剥离重组行为研究 总被引:1,自引:0,他引:1
层间距为1.44 nm层状氢氧化苯甲酸锌在乙醇、正丙醇、正丁醇介质中可剥离成其基本组成单元纳米层. 用TG-DTA、XRD、SEM、TEM和元素分析等手段研究了剥离的纳米层重组得到样品的结构特征、形貌和化学组成. 结果表明: 水热合成样品和剥离的纳米层重组样品具有相同的层状结构, 它们的化学组成分别为Zn(OH)1.12(C6H5COO)0.88和Zn(OH)1.1(C6H5COO)0.9. 水热合成的纤维状粒子剥离重组后改变成为像纳米带和纳米花粒子形貌. 相似文献
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The organic-inorganic layered compound zinc hydroxide-benzoic acid with basal spacing of 1.92 nm was synthesized hydrothermally using amorphous Zn(OH)2 and benzoic acid at the reaction temperature of 90~130 ℃, the molar ratio of C6H5COOH/Zn(Containing 6 mmol of Zn) of 0.4~0.6, 20 mL H2O and the reaction time of 6 h. The character, structure, particle morphology and chemical composition of the layered compound were characterized by means of XRD, TG-DTA, SEM, TEM and elemental analysis. The results indicate that the layered compound is of plate-like morphology and that with the temperature raising of hydrothermal synthesis, the particle of plate-like piece becomes smaller. The chemical formula of the layered compound could be written as Zn(OH)2-y·(C6H5COO)y·0.3H2O, 0.36≤y≤0.54. 相似文献
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NaHSO4•SiO2作催化剂, 1,3-二羰基化合物和伯胺在室温下反应合成了一系列β-烯胺酮(酯), 该法反应条件温和, 产率高, 催化剂能回收再利用. 相似文献
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