引用本文:
朱黎霞, 岳涛, 高世扬, 夏树屏. Mg(OH)2•2MgSO4•2H2O晶体的水热生长过程[J]. 物理化学学报,
2003, 19(03): 212-215.
doi:
10.3866/PKU.WHXB20030305
Citation: Zhu Li-Xia, Yue Tao, Gao Shi-Yang, Xia Shu-Ping. Hydrothermal Crystal Growth of Mg(OH)2•2MgSO4•2H2O[J]. Acta Physico-Chimica Sinica, 2003, 19(03): 212-215. doi: 10.3866/PKU.WHXB20030305
Citation: Zhu Li-Xia, Yue Tao, Gao Shi-Yang, Xia Shu-Ping. Hydrothermal Crystal Growth of Mg(OH)2•2MgSO4•2H2O[J]. Acta Physico-Chimica Sinica, 2003, 19(03): 212-215. doi: 10.3866/PKU.WHXB20030305
Mg(OH)2•2MgSO4•2H2O晶体的水热生长过程
摘要:
对MgSO4-NaOH-H2O四元交互体系在160 ℃水热条件下,相同物料配比,不同反应时间的晶体生长过程进行了研究,得到5Mg(OH)2•MgSO4•2H2O(简称MOS)晶须和Mg(OH)2•2MgSO4•2H2O棒状晶体两种硫氧镁化合物.通过化学分析、X-ray粉末衍射、FT-IR光谱和SEM对反应产物进行了表征.前者是该体系水热条件下介稳产物,而新的硫氧镁化合物Mg(OH)2•2MgSO4•2H2O是该体系的稳定相.
English
Hydrothermal Crystal Growth of Mg(OH)2•2MgSO4•2H2O
Abstract:
The hydrothermal reaction processes of MgSO4-NaOH-H2O system with the same raw materials concentration for different reaction time at 160 ℃ have been studied. There are two magnesium oxysulfate compounds obtained by hydrothermal reaction, namely 5Mg(OH)2•MgSO4•2H2O(MOS) whisker and Mg(OH)2•2MgSO4•2H2O crystal. The compounds were characterized by chemical analysis, XRD, FT-IR and SEM. The 5Mg(OH)2•MgSO4•2H2O whisker is a metastable phase in MgSO4-NaOH-H2O system at 160 ℃,whereas the Mg(OH)2•2MgSO4•2H2O crystal is the stable phase.
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