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MgSO_4·5Mg(OH)_2·3H_2O的水热合成及反应时间对其形貌的影响(英文) 被引量:18

Hydrothermal Synthesis and the Effect of Reaction Time on Morphology of MgSO_4·5Mg(OH)_2·3H_2O
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摘要 Both whisker and nanometer MgSO4·5Mg(OH)2·3H2O(MOS) were prepared by hydrothermal method at 140℃for different times, using NaOH and MgSO4·7H2O as raw materials. The MgSO4·5Mg(OH)2·3H2O part icles were characterized by powder X ray diffraction(XRD),thermal analysis(TGA DSC), infrared spectroscopy(FT IR),transmission electron microscopy(SEM) and scanning electron microscopy(TEM). The size distribution in whisker like and nanocrystalline materials arein the range of 10~50μm and 10~20nm respectively. The whisker MOS is metastable phase in MgSO4 NaOH H2O system at 140℃,whereas nanometer MOS is stable phase. Both whisker and nanometer MgSO4·5Mg(OH)2·3H2O(MOS) were prepared by hydrothermal method at 140℃for different times, using NaOH and MgSO4·7H2O as raw materials. The MgSO4·5Mg(OH)2·3H2O part icles were characterized by powder X ray diffraction(XRD),thermal analysis(TGA DSC), infrared spectroscopy(FT IR),transmission electron microscopy(SEM) and scanning electron microscopy(TEM). The size distribution in whisker like and nanocrystalline materials arein the range of 10~50μm and 10~20nm respectively. The whisker MOS is metastable phase in MgSO4 NaOH H2O system at 140℃,whereas nanometer MOS is stable phase.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2003年第1期99-102,共4页 Chinese Journal of Inorganic Chemistry
基金 国家自然科学基金资助项目(No.29971032)。
关键词 MgSO4·5Mg(OH)2·3H2O 水热合成 反应时间 形貌 硫氧镁 hydrothermal synthesis magnesium oxysulfate morphology
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