【摘要】 采用共沉淀法合成了Mg-Al-Cr、Co-Mg-Al三元类水滑石和两个替换二价和三价同时部分替换的Co-Mg-Al-Cr的四元类水滑石样品.应用X-射线衍射、差热分析和比表面积测定等分析方法对样品进行研究及表征.研究结果表明,合成了晶型比较完好的水滑石化合物,合成三元类水滑石比四元类水滑石较容易,且其晶型比合成的四元类水滑石更为理想.更多还原

【Abstract】 In this paper,the samples of Mg-Al-Cr,Co-Mg-Al,and Co-Mg-Al-Cr hydrotalcite-like compounds(HTLcs) were prepared by using coprecipitation method.And the samples were studied by X-ray diffraction(XRD),differential scanning colourimetry(DSC),and Brunner-Emmett-Teller method(BET).The result showed that all the precursors formed the structure of HTLcs.更多还原