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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.
The crystal growth process of MgSO4-NaOH-H2O quaternary system at 160 ℃ under hydrothermal conditions, the same material ratio and different reaction time were studied, and 5Mg (OH) 2 · MgSO4 · 2H2O (referred to as MOS) whiskers And Mg (OH) 2 · 2MgSO4 · 2H2O rod-shaped crystals were characterized by chemical analysis, X-ray powder diffraction, FT-IR spectroscopy and SEM.The former is the hydrothermal conditions of the system While the new Mg (OH) 2 · 2MgSO4 · 2H2O is the stable phase of the system.