硫氧镁化合物的水热合成、FTIR光谱和Raman光谱表征  

Hydrothermal Synthesis, FTIR and Raman Spectra Characterization of Magnesium Oxysulfate

作　　者：岳涛[1] 朱黎霞[2] 高世扬[1] 夏树屏[2] 

机构地区：[1]兰州大学化学化工学院,甘肃兰州730000 [2]中国科学院盐湖研究所西安二部,陕西西安710043

出　　处：《光谱学与光谱分析》2003年第6期1115-1118,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(No.29971032)

摘　　要：采用水热合成技术,于160℃时控制MgSO_4-NaOH-H_2O四元交互体系的组分,分别制得了3种不同组成的硫氧镁化合物晶体,即MgSO_4·5Mg(OH)_2·2H_2O,2MgSO_4·Mg(OH)_2和2MgSO_4·Mg(OH)_2·2H_2O。给出了这3种化合物的FTIR光谱和Raman光谱,探讨了结构与光谱峰值的关系,并用SEM对晶体的形貌进行了表征。Three kinds of magnesium oxysulfate crystals, namely, MgSO4 . 5Mg(OH)(2) . 2H(2)O, 2MgSO(4) .Mg(OH)(2) and 2MgSO(4) . Mg (OH)(2) . 2H(2)O were synthesized by hydrothermal reaction in MgSO4-NaOH-H2O quaternary reciprocal system at 160degreesC. The compositions of these compounds were defined by chemical analysis and X-ray powder diffraction. Their structures and properties were discussed by FTIR spectra and Raman spectra, and the morphologies of the crystals were characterized by SEM. The results indicated that different magnesium oxysulfate can be obtained at different concentration of the MgSO4 solution in the same system, and the molecular structures and the morphologies of these magnesium oxysulfate crystals are very different.

关 键 词：硫氧镁化合物晶体 水热法 合成 结构 FTIR光谱 RAMAN光谱 傅立叶变换红外光谱 拉曼光谱 扫描电子显微镜 

分 类 号：O614.22[理学—无机化学] O741.5[理学—化学]