27Al Solid-state NMR structural studies of hydrotalcite compounds calcined at different temperatures

被引：0
作者：
Department of Chemistry, Hankuk University of Foreign Studies, Yongin 449-791, Korea, Republic of [1 ]
机构：
[1] Department of Chemistry, Hankuk University of Foreign Studies
来源：
Bull. Korean Chem. Soc. | 2009年 / 1卷 / 149-152期
关键词：
1D MAS; 2D; 3QMAS; !sup]27[!/sup]Al NMR; Hydrotalcite; Solid-state NMR;
D O I：
10.5012/bkcs.2009.30.1.149
中图分类号：
学科分类号：
摘要：
Hydrotalcites are anionic clays that are quite prevalent in nature and their importance is growing more and more because of their very wide range of potential applications and uses. Understanding the structural and compositional changes that occur on the molecular scale during the thermal decomposition of hydrotalcite compounds is essential for the basic prediction and comprehensive understanding of the behavior and technical application of these materials. In this study, several hydrotalcite compounds calcined at different temperatures for applications in a chlorine resistant textile were prepared and 27-Aluminm solid-state nuclear magnetic resonance (NMR) spectroscopy was used as a tool to study their local structure and behavior. The changes in the Al coordination of the hydrotalcite compounds were investigated with one dimensional (1D) solid-state magic angle spinning (MAS) NMR spectroscopy. The two broad resonances arising from the structurally different Al coordinations of these compounds were clearly resolved by two dimensional (2D) triple quantum magic angle spinning (3QMAS) NMR spectroscopy.
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页码：149 / 152
页数：3
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