Synthesis of ZnAl2O4 spinel directly from zinc aluminum layered double hydroxide precursor
首发时间:2012-04-20
Abstract:Single-phase ZnAl2O4 spinel has been prepared by a novel simple route using layered double hydroxides (LDHs) as a precursor. ZnAl2O4 spinel is directly obtained by calcination of zinc aluminum layered double hydroxide whose Zn/Al molar radio is 0.5 without further chemical treatment. The key feature of this method is that it affords uniform distribution of all metal cations on an atomic level in the precursors. The structural characteristics of the as-synthesized precursors and the result calcined products were obtained by X-ray diffraction (XRD) and scanning electron microscope (SEM).
keywords: Layered double hydroxide ZnAl2O4 spinel Urea method
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以锌铝类水滑石为前驱体制备锌铝尖晶石
摘要:本文通过一种新型简便的方法以LDHs作为前驱体制备出单相ZnAl2O4尖晶体。通过煅烧Zn/Al摩尔比为0.5的锌铝层状氢氧化物在无需化学处理的情况下可直接得到ZnAl2O4尖晶体,这种方法的主要好处在于是在前驱体中所有金属阳离子在原子水平上达到均匀分布。所合成的前驱体和煅烧产物的结构特征通过XRD和SEM得到表征。
关键词: 层状双氢氧化物 ZnAl2O4尖晶体 尿素法
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