Spectroscopic and theoretical analyses of the reaction of SrO in molten chloride and fluoride salts
Source abstract
Abstract
In this paper, the reaction of SrO in molten chloride and fluoride systems is investigated using Raman spectroscopy, combined with density functional theory calculations. The formation of Sr 4OCl 6 was observed in various salt compositions, including LiCl, LiCl-KCl, and LiCl-LiF, at temperatures ranging from 298 K to 923 K. Thermodynamic calculations estimated that Sr 4OCl 6 is more stable than SrO and SrCl 2 , while no stable strontium oxyfluoride compound was found. The results were also supported by X-ray analyses: Extended X-ray absorption fine structure analysis indicated that the local structure of Sr in LiCl-KCl and LiCl-LiF consists of one oxygen and six chlorides, corresponding to a complex with a similar local structure of Sr 4OCl 6. Additionally, Sr 4OCl 6 was found in LiCl-LiF, and no strontium compound was observed in LiF-KF using X-ray diffraction. These results provide a comprehensive understanding of the dissolution structures of strontium oxyhalide in molten chloride and fluoride systems.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Molten salt chemistry and electrochemical processes · Inorganic Fluorides and Related Compounds · Metallurgical Processes and Thermodynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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