Measurement of europium (III)/europium (II) couple in fluoride molten salt for redox control in a molten salt reactor concept
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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Measurement of europium (III)/europium (II) couple in fluoride molten salt for redox control in a molten salt reactor concept
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Measurement of europium (III)/europium (II) couple in fluoride molten salt for redox control in a molten salt reactor concept

机译：测量铕（III）/铕（II）氟化盐中氟化盐反应器概念中的氧化还原控制中的铕（III）/铕（II）耦合

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AbstractThe fluoride molten salt such as FLiNaK and FLiBe is one of the coolant candidates for the next generation nuclear reactor concepts, for example, the fluoride salt cooled high temperature reactor (FHR). For mitigating corrosion of structural materials in molten fluoride salt, the redox condition of the salts needs to be monitored and controlled. This study investigates the feasibility of applying the Eu3+/Eu2+couple for redox control. Cyclic voltammetry measurements of the Eu3+/Eu2+couple were able to obtain the concentrations ratio of Eu3+/Eu2+in the melt. Additionally, the formal standard potential of Eu3+/Eu2+was characterized over the FHR's operating temperatures allowing for the application of the Nernst equation to establish a Eu3+/Eu2+concentration ratio below 0.05 to prevent corrosion of candidate structural materials. A platinum quasi-reference electrode with potential calibrated by potassium reduction potential is shown as reliable for the redox potential measurement. These results show that the Eu3+/Eu2+couple is a feasible redox buffering agent to control the redox condition in molten fluoride salts.]]>
机译：<！[CDATA [ 抽象 氟化物熔融盐如Flinak和Flind的氟化盐是下一代核反应堆概念的冷却剂候选者之一，例如，氟化物盐冷却的高温反应器（FHR）。为了减轻熔融氟化物中结构材料的腐蚀，需要监测和控制盐的氧化还原条件。本研究调查了应用欧盟 3 + / eu 2 + redox的可行性控制。欧盟的循环伏安法测量eu 3 + / eu 2 + 夫妇能够获得Eu 3 + / eu 2 + 在熔体中> 2 + 。另外，欧盟的正式标准电位 3 + / eu 2 + 的特征在于FHR的工作温度允许应用NERNST方程来建立EU 3 + / EU 2 + 浓度比低于0.05，以防止候选结构材料的腐蚀。对于通过钾降低电位校准的铂准参参参考电极被显示为氧化还原电位测量的可靠性。这些结果表明，欧盟 3 + / eu 2 + 夫妇是一个可行的redox缓冲试剂控制熔融氟盐盐中的氧化还原条件。 ]]>

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