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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Speciation of hydrogen in silica glass by 1H MAS NMR
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Speciation of hydrogen in silica glass by 1H MAS NMR

机译：1H MAS NMR测定石英玻璃中氢的形态

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摘要

The H-bearing species in silica glass melted quartz powder in hydrogen atmosphere have been investi_gated using high-resolution ~1H magicangle spinning nuclear magnetic resonance ('H MAS NMR) spec_troscopy, Fourier transform infrared (FTIR) spectroscopy and quadrupole mass spectrometry. The results show that molecular H_2, hydroxyl (OH) groups and hydride (SiH) groups are present in the glass. The physically dissolved molecular H_2 is represented by a broad NMR peak with the effects of strong H-H magnetic dipolar interactions. Isolated OH groups and hydrogen bonding OH groups in silica glass have been distinguished by the chemical shift of the ~1H NMR spectrum. The influence of E' center on the ~1H MAS NMR spectrum are also analyzed.
机译：使用高分辨率〜1H魔角旋转核磁共振（'H MAS NMR）光谱，傅里叶变换红外（FTIR）光谱和四极质谱法研究了氢气氛中石英玻璃熔融石英粉中含H的物质。结果显示玻璃中存在分子H_2，羟基（OH）和氢化物（SiH）。物理溶解的分子H_2由宽的NMR峰表示，具有强的H-H磁偶极相互作用。石英玻璃中孤立的OH基和氢键合OH基的特征在于〜1H NMR光谱的化学位移。还分析了E'中心对〜1H MAS NMR谱的影响。

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