脱水引起的水的干扰在合成气酸盐纳托利特中
Yongjae Lee1, Sun Jin Kim, Ivor Bull
1Department of Earth System Sciences, Yonsei University, Seoul 120-749, Korea. yongjaelee@yonsei.ac.kr
Journal of the American Chemical Society
|October 16, 2007
概括
合成了一种具有纳托利特结构的新型气酸热. 它的水分子表现出温度依赖的排序,脱水和可逆结构变化.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 岩石是具有多种应用的晶体酸.
- 了解结构动力学对于热带石设计至关重要.
- 气酸热石具有独特的特性.
研究的目的:
- 合成和表征一种新的二二氧化硫酸氧化.
- 研究温度依赖的结构行为,专注于水分子.
- 确定脱水和再水对热带石框架的影响.
主要方法:
- 气酸热水合成的气酸地.
- 单色同步X射线粉末衍射用于结构分析.
- 瑞特维尔德精细化用于温度的函数的精确结构确定.
主要成果:
- 合成了一种具有纳托利特拓 (K8.2Ga8.2Si11.8O40.11.5H2O) 的新型气酸焦.
- 这种合成的材料与有序的水分子呈现着正方体对称性,与已知的四角形相不同.
- 温度诱导的可逆变化包括水分子乱,选择性脱水,在完全脱水后显著减少15%的体积.
结论:
- 合成的热石显示了与水分子有关的独特的温度依赖的结构转变.
- 通过脱水-再水循环,框架保持稳定,离子分布基本不受影响.
- 这种材料显示出需要控制水吸收/释放和结构灵活性的应用的潜力.
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