控制和监测2LiF-BeF2融盐中233Pa溶解的氧化还原潜力
Zhongqi Zhao1,2,3, Junxia Geng1,2, Zhiqiang Cheng1,2
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China.
RSC advances
|May 20, 2024
概括
控制融盐FLiBe中的氧化还原潜力,可以防止protactinium沉积. 添加化 (NiF2) 将沉积的233Pa重新溶解,确保反应堆的稳定化条件.
科学领域:
- 核化学 核化学 核化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 在燃料循环中,-233 (233U) 的前体-233 (233Pa) 可以在FLiBe融盐中降解性沉积.
- 保持稳定的活性化物和裂变产品行为对于盐反应堆的运行至关重要.
研究的目的:
- 为了研究控制FLiBe盐的氧化还原潜力的方法.
- 为了防止233Pa的降解沉积,并确保其在融中的稳定存在.
- 为了评估氧化还原控制对盐中其他元素的影响.
主要方法:
- 使用氧化剂试验调整和控制FLiBe化氧化还原潜力.
- 添加化 (NiF2) 来重新溶解沉积的233Pa.
- 对,,海王星和裂变产物 (95Nb, 131I) 在NiF2处理的FLiBe.中分布和行为的分析.
主要成果:
- 添加NiF2有效地重新溶解了沉积的233Pa,将其返回到融盐中.
- U,Th,Np和大多数裂变产物的行为在很大程度上不受NiF2氧化的影响.
- -131 (131I) 被确定为监测FLiBe盐氧化状态的潜在氧化还原指标.
结论:
- 使用NiF2进行氧化控制是一种可行的方法,可以在FLiBe盐中稳定233Pa.
- 这种方法支持溶盐反应堆 (TMSR) 的安全和高效运行.
- 这些发现为管理先进核燃料循环中的氧化还原条件提供了关键数据.
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