Na3AlF6-Al2O3系熔盐离子结构的拉曼光谱研究

吕秀梅; 尤静林; 王媛媛; 王建; 伍俊; 王敏; 刘晓伟

doi:doi:10.13883/j.issn1004-5929.201501009

光散射学报, 2015, 27 (1): 39, 网络出版: 2015-09-08

Na₃AlF₆-Al₂O₃系熔盐离子结构的拉曼光谱研究

Raman Spectroscopic Study on the Structure of Na₃AlF₆-Al₂O₃ Molten Salt System

论文大纲

吕秀梅 ^*尤静林王媛媛王建伍俊王敏刘晓伟

作者单位

上海大学,上海市现代冶金与材料制备重点实验室, 上海 200072

高温熔盐拉曼光谱络合离子 Na3AlF6-Al2O3 Na3AlF6-Al2O3 high temperature molten salt Raman spectroscopy complexion

摘要

利用激光共焦拉曼光谱仪测定了不同氧化铝含量的Na3AlF6-Al2O3体系的常温与升温拉曼光谱,通过解析该拉曼光谱总结了其离子结构的种类以及随温度的变化规律,并对相应的拉曼谱峰进行了归属.结果表明当温度升至1173 K及以上时,样品开始熔化并出现AlF63-→AlF4-的转化,同时伴有复杂离子的生成.将实验结果与模拟计算结合,发现在氧化铝含量较高的样品中存在络合离子Al2O2F42-.

Abstract

Raman spectra of the Na3AlF6-Al2O3 systems containing different alumina were measured by laser confocal Raman Spectrometer at room temperature and high temperature.Various ion clusters were assigned and identified,as well as the temperature dependent evolution of ion clusters by analyzing in-situ Raman spectra obtained.It revealed that as the temperature was heated up to 1173 K,the samples began to melt accompanied by the transformation from AlF63-to AlF4-and the formation of more complicated ion clusters.With the consideration of computational data,it suggested that the complex ion Al2O2F42-emerge in samples with higher alumina content.

参考文献

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吕秀梅, 尤静林, 王媛媛, 王建, 伍俊, 王敏, 刘晓伟. Na₃AlF₆-Al₂O₃系熔盐离子结构的拉曼光谱研究[J]. 光散射学报, 2015, 27(1): 39. LV Xiu-mei, YOU Jing-lin, WANG Yuan-yuan, WANG Jian, WU Jun, WANG Min, LIU Xiao-wei. Raman Spectroscopic Study on the Structure of Na₃AlF₆-Al₂O₃ Molten Salt System[J]. The Journal of Light Scattering, 2015, 27(1): 39.

Na₃AlF₆-Al₂O₃系熔盐离子结构的拉曼光谱研究

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