Letters. Chloride ion sites in silicate and aluminosilicate glasses: A preliminary study by 35Cl solid-state NMR
Letters. Chloride ion sites in silicate and aluminosilicate glasses: A preliminary study by 35Cl solid-state NMR
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信件。
DOI：
10.2138/am-2002-2-320
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发表时间：
2002
影响因子：
3.1
通讯作者：
L. Du
中科院分区：
文献类型：
--
作者：
J. Stebbins;L. Du
摘要尽管氯离子在岩浆和从岩浆中分离出来的流体中很重要，但人们对硅酸盐玻璃中氯离子的原子尺度结构环境知之甚少。我们在这里提出的第一个固态35 Cl NMR数据Cl硅酸盐和铝硅酸盐玻璃，可能的可用性非常高（14.1至18.8特斯拉）的磁场。我们发现，35 Cl具有广泛的化学位移，以及与阳离子-Cl距离，从而包含相当多的结构信息。在一般情况下，氯主要是由网络改性碱金属或碱土金属阳离子协调，我们没有看到任何证据的Al-Cl键。
Abstract Despite the importance of the chloride ion in magmas and the fluids that separate from them, very little is known about atomic-scale structural environments for Cl- in silicate glasses. We present here the first solid-state 35Cl NMR data for Cl in silicate and aluminosilicate glasses, made possible by the availability of very high (14.1 to 18.8 Tesla) magnetic fields. We find that 35Cl has a wide range in chemical shifts that correlate well with cation-Cl distance and thus contain considerable structural information. In general, Cl is coordinated primarily by network-modifying alkali or alkaline earth cations, and we see no evidence for Al-Cl bonding.