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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Thermo-Raman spectroscopic study of the natural layered double hydroxide manasseite
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Thermo-Raman spectroscopic study of the natural layered double hydroxide manasseite

机译:天然层状双氢氧化物锰铁矿的热拉曼光谱研究

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Raman and thermo-Raman spectroscopy have been applied to study the natural hydrotalcite manasseite Mg6Al2(OH)(16)(CO3)(.)4H(2)O. Hydrogen bond distances calculated using a Libowitzky-type empirical function varied between 2.61 and 3.00 angstrom. Stronger hydrogen bonds were formed by water units as compared to the hydroxyl units. Thermo-Raman spectroscopy enabled the identification of bands attributed to the hydroxyl units. Two Raman bands at 1062 and 1058 cm(-1) are assigned to symmetric stretching modes of the carbonate anion. Thermal treatment shifts these bands to higher wavenumbers indicating a change in the carbonate bonding. (c) 2005 Elsevier B.V. All rights reserved.
机译:拉曼光谱和热拉曼光谱已用于研究天然水滑石菱镁矿Mg6Al2(OH)(16)(CO3)(。)4H(2)O。使用Libowitzky型经验函数计算的氢键距离在2.61至3.00埃之间变化。与羟基单元相比,水单元形成更强的氢键。热拉曼光谱法能够鉴定归因于羟基单元的谱带。在1062和1058 cm(-1)处的两个拉曼谱带被分配给碳酸根阴离子的对称拉伸模式。热处理将这些谱带移动到更高的波数,表明碳酸盐键的变化。 (c)2005 Elsevier B.V.保留所有权利。

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