| 新型除铯环境材料硅钛酸钠孔道结构化合物(Na4Ti4Si3O10)合成及结构表征 |
| Synthesis and Structure Characterization of a Novel Cs Removal Open-Framework Silicotitanate(Na4Ti4Si3O10) |
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| 摘要: 通过溶胶凝胶-水热合成法制备出一种新型的硅钛酸钠孔道结构化合物(Na4Ti4Si3O10)。经XRD、SEM、TEM、X-荧光分析等方法对其晶体结构进行了表征。晶体学数据为：P43，a=b=7.8110?、c=11.9735?、α=β=γ=90°。该化合物具有三维空间结构，组成基本单元为Ti-O八面体簇和Si-O四面体，孔道结构为两端都开放的管状毛细孔。微观形貌为规整的四方晶粒，粒子的平均尺寸为20nm;研究了Na4Ti4Si3O10的化学稳定性、热稳定性以及在整个pH范围内的除铯性能。 |
| 关键词: 溶胶凝胶-水热合成法 硅钛酸钠 表征 分配系数 |
| 基金项目: |
| Abstract: A novel open-framework silicotitanate (Na4Ti4Si3O10) with high surface area has been synthesized by a com-bination of sol gel-hydrothermal method. The crystal structure of Na4Ti4Si3O10 was characterized by X-ray diffrac-tion， scanning electron microscope， transmission electron micrograph and so on. The compound is tetragonal， P43， a=b=7.8110?， c=11.9735?， α=β=γ=90°. Na4Ti4Si3O10 has a three dimensional framewok constitution of Ti-O octahedral clusters and Si-O tetraheda. The chemical stability， thermal stability and the cesium removal property of Na4Ti4Si3O10 were also studied. |
| Keywords: sol gel-hydrothermal method silicotitanate characterization distribution coefficient |
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| 于波,陈靖,宋崇立.新型除铯环境材料硅钛酸钠孔道结构化合物(Na4Ti4Si3O10)合成及结构表征[J].无机化学学报,2003,19(2):119-124. |
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