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题名:
Study on the mechanism of deoxidization and purification for Li2BeF4 molten salt via graphite nanoparticles
作者: Xie, MY; Li, L; Ding, YP; Zhang, GX
刊名: JOURNAL OF NUCLEAR MATERIALS
出版日期: 2017
卷号: 487, 页码:317-322
关键词: Mechanism ; Li2BeF4 molten salt ; Deoxidization and purification ; Graphite nanoparticles ; Vacuum degassing
DOI: 10.1016/j.jnucmat.2017.01.055
文章类型: 期刊论文
英文摘要: Graphite nanoparticles originated from high purity graphite crucible were used for deoxidization and purification of Li2BeF4 molten salt containing a bit of (NH4)(2)BeF4 under high temperature vacuum condition. And the mechanism of deoxidization and purification via graphite nanoparticles was put forward based on analysis of sample characterization and chemical reaction Gibbs free energy calculation. The morphology, particle size, chemical composition and crystal structure of graphite nanoparticles in Li2BeF4 molten salt were characterized by High Resolution Transmission Electron Microscopy (HRTEM, SAED and EDS). Phase analysis, total oxygen content, full elemental and anion concentration for as prepared Li2BeF4 products were studied by X-Ray Diffraction (XRD), LECO nitrogen-oxygen analyzer, Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and Ion Chromatography (IC), respectively. The results of sample characterization showed that graphite nanoparticles in Li2BeF4 molten salt were the poly-crystal round sheet shape with an average diameter of <100 nm. The concentration of total oxygen, sulfur and nickel in as-prepared Li2BeF4 molten salt after treatment were 548 ppm, <0.6 ppm and <0.4 ppm, respectively. Experiment and calculation all showed that SO42- and NO3- could react with carbon at 700 degrees C. And vacuum degassing play an excellent role in deoxidization and purification for Li2BeF4 molten salt via graphite nanoparticles. (C) 2017 Elsevier B.V. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000399506900037
ISSN号: 0022-3115
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27457
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Xie, MY,Li, L,Ding, YP,et al. Study on the mechanism of deoxidization and purification for Li2BeF4 molten salt via graphite nanoparticles[J]. JOURNAL OF NUCLEAR MATERIALS,2017-01-01,487:317-322.
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文件名: Study on the mechanism of deoxidization and purification for Li2BeF4 molten salt via graphite nanoparticles.pdf
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