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研究了焙烧温度对焙烧MgAl水滑石体相结构和表面性质的影响 .在 6 73K、873K和 10 73K温度下焙烧样品的MAS2 7Al核磁共振结果呈现显著的物相转变 ,其转变中的过渡态对确定样品表面酸碱性质显得很重要 .XPS测定样品中Al2S和O1S结合能与样品表面酸碱中心的强度相关
The effects of calcination temperature on the phase structure and surface properties of calcined MgAl hydrotalcite were studied.The results of MAS2 7Al NMR showed that there are significant phase transitions in the calcined samples at 673K, 873K and 1073K, It is important to determine the acid-base properties of the sample surface.XPS determination of the sample Al2S and O1S binding energy and the sample surface acid-base strength