Presence of Li Clusters in Molten LiCl-Li.
Presence of Li Clusters in Molten LiCl-Li.
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DOI：
10.1038/srep25435
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发表时间：
2016-05-05
影响因子：
4.6
通讯作者：
Chidambaram D
中科院分区：
文献类型：
--
作者：
Merwin A;Phillips WC;Williamson MA;Willit JL;Motsegood PN;Chidambaram D
氯化锂和金属锂的熔融混合物在各种金属氧化物还原工艺中具有重要意义。据报道，这些溶液表现出看似异常的物理特征，缺乏全面的解释。本文利用原位拉曼光谱研究了含锂和不含锂氧化物的氯化锂和金属锂熔融溶液的物理化学性质。从这些溶液中获得的拉曼光谱与先前报道的锂簇Li8的光谱一致。这一观察结果表明，Li8的纳米流体型胶体悬浮液存在于熔盐基质中。这表明，锂团簇在氯化锂中的形成和悬浮是这些溶液所表现出的各种现象的原因，这些现象以前是无法解释的。
Molten mixtures of lithium chloride and metallic lithium are of significant interest in various metal oxide reduction processes. These solutions have been reported to exhibit seemingly anomalous physical characteristics that lack a comprehensive explanation. In the current work, the physical chemistry of molten solutions of lithium chloride and metallic lithium, with and without lithium oxide, was investigated using in situ Raman spectroscopy. The Raman spectra obtained from these solutions were in agreement with the previously reported spectrum of the lithium cluster, Li8. This observation is indicative of a nanofluid type colloidal suspension of Li8 in a molten salt matrix. It is suggested that the formation and suspension of lithium clusters in lithium chloride is the cause of various phenomena exhibited by these solutions that were previously unexplainable.