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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 >Quantitative Raman spectroscopy: High-temperature speciation of potassium silicate melts
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Quantitative Raman spectroscopy: High-temperature speciation of potassium silicate melts

机译：定量拉曼光谱：硅酸钾熔体的高温形态

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In situ, high-temperature Raman spectroscopy was used to study the Q(n) speciation in binary potassium silicate melts. Over 300 Raman spectra in the compositional range from 20 to 38 mol% K2O were collected at temperatures between 800 and 1200 K. Quantitative information on the relative abundances of species in melts was obtained from the Raman spectra through a quantification procedure that does not require any a priori assumptions about the line shapes or external calibration of the Raman scattering efficiencies for the various Q(n) species. The Delta H-0 associated with the speciation reaction 2Q(3) = Q(4) + Q(2) was found to be 33.1 +/- 7.3 kJ/mol. (c) 2007 Elsevier B.V. All rights reserved.
机译：原位高温拉曼光谱用于研究二元硅酸钾熔体中的Q（n）形态。在800至1200 K的温度范围内，收集到300多种拉曼光谱，其组成范围为20至38 mol％K2O。有关熔体中物种相对丰度的定量信息是通过不需要任何定量分析程序的拉曼光谱获得的关于各种Q（n）物种的拉曼散射效率的线形或外部校准的先验假设。与形态反应2Q（3）= Q（4）+ Q（2）相关的Delta H-0被发现是33.1 +/- 7.3 kJ / mol。 （c）2007 Elsevier B.V.保留所有权利。

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