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镁铝氢氧化物正电溶胶结构研究 被引量:18

Studies on Structure of Magnesium Aluminium Hydroxide Positive Sol
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摘要 镁铝氢氧化物正电溶胶结构研究韩书华,张春光,侯万国,孙德军,王果庭(山东大学胶体与界面化学研究所,济南,250100)关键词镁铝氢氧化物,正电溶胶,共沉淀镁铝氢氧化物是一种层状的氢氧化物。Burba等[1]提出将镁铝氢氧化物与钠质蒙脱土作用可得到抑制... Using the coprecipitation method,magnesium aluminium hydroxide sol charged positive was prepared.The structure and composition were studied with powder XRD,TEM,TGA-DTA, FT-IR and chemical analysis.Results showed that the structure of magnesium aluminium hydroxide was hydrotalcite-like,and belonged to hexagonal system;lattice constants a and c both increased with the increase of the molar ratio of Mg/Al.The shape of magnesium aluminium hydroxide particles is hexagonal plate and the mean particle size is 11.7nm.Three peaks of obtained magnesium aluminium hydroxide caused by weight losses were detected:the first peak(around 160 ℃)might be attributed to physical adsorption water and interlayer water;the second one(around 258℃)was due to elimination of crystalline water and the third one(around 400℃)was due to the dehydroxylation of the mixed metal hydroxide layers.The first and the second weight loss peaks were superimposed and widen when the molar ratio of Mg/AI was above 2.84.
出处 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 1996年第11期1785-1787,共3页 Chemical Journal of Chinese Universities
基金 山东大学青年科学基金
关键词 镁铝氢氧化物 正电溶胶 共沉淀 Magnesium aluminium hydroxide,Positive sol,Coprecipitation
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参考文献2

  • 1黄伯龄,矿物差热分析鉴定手册,1987年
  • 2彭文世,矿物红外光谱图集,1982年

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