Studying Thermochemical Conversion of Sm2O3 to SmCl3 using AlCl3 in LiCl-KCl Eutectic Melt

IF 3 4区 工程技术 Q3 ELECTROCHEMISTRY
Nibedita Samanta, M. Chandra, S. Maji, P. Venkatesh, S. Annapoorani, Ashish Jain
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引用次数: 2

Abstract

In this report the thermochemical conversion of Sm 2 O 3 to SmCl 3 using AlCl 3 in LiCl-KCl melt at 773 K is discussed. The final product was a mixture of SmCl 3 , Al 2 O 3 , unreacted Sm 2 O 3 and AlCl 3 in the chloride melt. The electrochemical attri-butes of the mixture was analyzed with cyclic voltammetry (CV) and square wave voltammetry (SWV). The crystallo-graphic phases of the mixture were studied with X-ray diffraction (XRD) technique. The major chemical conversion was optimized by varying the effective parameters, such as concentrations of AlCl 3 , duration of reaction and the amount of LiCl-KCl salt. The extent of conversion and qualitative assessment of efficiency of the present protocol were evaluated with fluorescence spectroscopy, UV-Vis spectrophotometry and inductively coupled plasma atomic emission spectroscopy (ICP-AES) studies of the mixture. Thus, a critical assessment of the thermochemical conversion efficiency was accomplished by analysing the amount of SmCl 3 in LiCl-KCl melt. In the process, a conversion efficiency of 95% was achieved by dou-bling the stoichiometric requirement of AlCl 3 in 50 g of LiCl-KCl salt. The conversion reaction was found to be very fast as the reaction reached equilibrium in 15 min.
用AlCl3在LiCl-KCl共晶熔体中研究Sm2O3向SmCl3的热化学转化
本文讨论了在773K的LiCl-KCl熔体中用AlCl3将Sm2O3热化学转化为SmCl3的反应。最终产物是SmCl3、Al2O3、未反应的Sm2O3和AlCl3在氯化物熔体中的混合物。用循环伏安法(CV)和方波伏安法(SWV)分析了混合物的电化学性质。用X射线衍射(XRD)技术对混合物的结晶相进行了研究。通过改变有效参数,如AlCl3的浓度、反应时间和LiCl-KCl盐的量,优化了主要的化学转化率。通过混合物的荧光光谱、UV-Vis分光光度法和电感耦合等离子体原子发射光谱(ICP-AES)研究,评估了本方案的转化程度和效率的定性评估。因此,通过分析LiCl-KCl熔体中SmCl3的量,对热化学转化效率进行了关键评估。在该工艺中,通过加倍50克LiCl-KCl盐中AlCl3的化学计量要求,实现了95%的转化率。发现转化反应非常快,因为反应在15分钟内达到平衡。
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来源期刊
CiteScore
6.30
自引率
8.10%
发文量
44
期刊介绍: Covering fields: - Batteries and Energy Storage - Biological Electrochemistry - Corrosion Science and Technology - Electroanalytical Chemistry and Sensor Technology - Electrocatalysis - Electrochemical Capacitors & Supercapcitors - Electrochemical Engineering - Electrodeposition and Surface Treatment - Environmental Science and Technology - Fuel Cells - Material Electrochemistry - Molecular Electrochemistry and Organic Electrochemistry - Physical Electrochemistry - Solar Energy Conversion and Photoelectrochemistry
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