A Raman spectroscopic study of H/D isotopically substituted hydrous aluminosilicate glasses
A Raman spectroscopic study of H/D isotopically substituted hydrous aluminosilicate glasses
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H/D同位素取代的水合铝硅酸盐玻璃的拉曼光谱研究
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发表时间：
1993
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通讯作者：
R. Remmele
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作者：
P. McMillan;B. Poe;Thomas R. Stanton;R. Remmele
我们获得了两个H/D同位素取代的水合铝硅酸盐玻璃的高质量拉曼光谱，它们的组成沿NaAlSi3O8-SiO_2连接。与以前的研究结果一致，−1附近900cmVh/Vd=1.004±0.004的同位素位移非常小，其强度随含水率的增加而增大。然而，该谱带缺乏明确的H/D同位素位移并不排除它与玻璃中含水物种的振动有关，因为水合骨架物种的不同振动模式之间可能存在强烈的耦合。900 cm的−-1谱带很可能是由于水合玻璃中的T-OH(T=Si，Al)伸缩或弯曲振动所致，这是由于近红外光谱中在4500 cm−-1附近存在一个组合谱带所必需的。
We have obtained high quality Raman spectra for two H/D isotopically substituted hydrous aluminosilicate glasses with compositions along the NaAlSi3O8-SiO2 join. Consistent with the results of previous studies, the isotope shift for the band near 900 cm−1, whose intensity grows with increasing water content, is extremely small: vh/vd= 1.004 ± 0.004. The lack of a definite H/D isotope shift for this band does not, however, preclude its association with a vibration of a hydrous species in the glass, because of likely strong coupling between different vibrational modes of hydrated framework species. The 900 cm−1 band could well be due to a T — OH (T = Si, Al) stretching or bending vibration in the hydrous glass, as required by the presence of a combination band near 4500 cm−1 in near-infrared spectra.