镁铝氢氧化物正电溶胶结构研究  

Studies on Structure of Magnesium Aluminium Hydroxide Positive Sol

作　　者：韩书华[1] 张春光[1] 侯万国[1] 孙德军[1] 王果庭[1] 

机构地区：[1]山东大学胶体与界面化学研究所

出　　处：《高等学校化学学报》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

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.

关 键 词：镁铝氢氧化物 正电溶胶 共沉淀 

分 类 号：O614[理学—无机化学] O648.16[理学—化学]