An Application of the Photochemistry of Uranyl Ion to Nuclear Fuel Reprocessing

铀酰离子光化学在核燃料后处理中的应用

基本信息

  • 批准号:
    62580174
  • 负责人:
  • 金额:
    $ 1.09万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1987
  • 资助国家:
    日本
  • 起止时间:
    1987 至 1988
  • 项目状态:
    已结题

项目摘要

Photochemical reactions of uranyl ion (UO_2^<2+>) in nitric acid have been investigated from a point of applications to a spent nuclear fuel reprocessing.Quantum yields of fluorescence from excited uranyl ion in nitric acid were determined by comparing with the photoemission of quinine in sulfuric acid taken as a refernce. It was found that the yields is an order of 10^<-3> and concentration dependence of nitric acid was measured. The emission is strongly affected by the presence of additives and quenching parameters for some additives were determined. The evaluated values were consistent with reported. Further, a simple method is proposed to evaluate the absolute concentration of uranyl ion from the quenching measurements in the presence of quenchers as impuruties.Quantum yield of photoreduction of uranyl ion to uranous ion (U^<4+>) by ethanol in nitric acid was determined. On the basis of the concentration dependence of nitric acid and ethanol, and effects of oxygen, and concomitant ions of [H^+] and [NO^<3->], mechanism of the photochemical reactions was derived. Finally, it is concluded that photoreduction of uranyl ion by ethanol could be used for developing new techniques of the nuclear fuel reprocessing.
从乏燃料后处理的应用角度出发,研究了铀酰离子在硝酸中的光化学反应。以奎宁在硫酸中的光电发射为参照,测定了铀酰离子在硝酸中激发的荧光量子产率。结果表明,硝酸的产率为10^&lt;-3&gt;,并测定了硝酸的浓度依赖关系。添加剂的存在对发射有很大的影响,并确定了某些添加剂的猝灭参数。评价值与文献报道一致。在此基础上,提出了一种简单的方法来估算在有猝灭剂存在的杂质存在下的铀酰离子的绝对浓度,并测定了乙醇在硝酸中将铀酰离子光还原为铀离子的量子产率。根据硝酸和乙醇的浓度依赖性以及氧以及伴随离子[H^+]和[NO^&lt;3-&gt;]的影响,推测了光化学反应的机理。最后得出结论,乙醇光还原铀酰离子可用于开发核燃料后处理新技术。

项目成果

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Y.Katsumura,;H.Abe.;T.Yotsuyanagi.;K.Ishigure.: Submitted for Journal of Photochemisty.
Y.Katsumura,;H.Abe.;T.Yotsuyanagi.;K.Ishigure.:提交给《光化学杂志》。
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    0
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Y.Katumura,;H.Abe,;T.Yotsuyanagi,;K.Ishigure.: submitted for Journal of Photochemistry.
Y.Katumura,;H.Abe,;T.Yotsuyanagi,;K.Ishigure.:提交给《光化学杂志》。
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    0
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KATSUMURA Yosuke其他文献

KATSUMURA Yosuke的其他文献

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{{ truncateString('KATSUMURA Yosuke', 18)}}的其他基金

Study on high temperature radiolysis of water relevant to water chemistry
水的高温辐射分解与水化学相关的研究
  • 批准号:
    23246168
  • 财政年份:
    2011
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Evaluation of water decomposition by irradiation of heavy ion beam and development of the visualization of the ion track in matter
重离子束照射水分解的评价以及物质中离子轨迹可视化的发展
  • 批准号:
    16310036
  • 财政年份:
    2004
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Radiation Effect of Groundwater relevant to Radioactive Waste Repository
放射性废物处置库相关地下水的辐射效应
  • 批准号:
    10480115
  • 财政年份:
    1998
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on the Radiation Induced Reactions in Aqueous Solutions
水溶液中辐射诱发反应的研究
  • 批准号:
    07458098
  • 财政年份:
    1995
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Radiation Chemical Effects of Nitrogen Oxides
氮氧化物的辐射化学效应
  • 批准号:
    04453163
  • 财政年份:
    1992
  • 资助金额:
    $ 1.09万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)

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    20K05426
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    2020
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EAGER: COLLABORATIVE RESEARCH: Hybrid Quantum Dot-Metal Nanocrystals for Photoreduction of CO2: Synthesis, Spectroscopy and Catalysis
渴望:合作研究:用于二氧化碳光还原的混合量子点金属纳米晶体:合成、光谱学和催化
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EAGER: Collaborative Research: Hybrid Quantum Dot-Metal Nanocrystals for Photoreduction of CO2: Synthesis, Spectroscopy and Catalysis
EAGER:合作研究:用于二氧化碳光还原的混合量子点金属纳米晶体:合成、光谱学和催化
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    $ 1.09万
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    Standard Grant
Kinetics of Mercury Photoreduction with Changng Salinity
含盐度变化的汞光还原动力学
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    526391-2018
  • 财政年份:
    2018
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在环境条件下使用多孔玻璃纳米腔光还原二氧化碳
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Reductive umpolung reactions with low-valent titanium catalysts: From the development, application and mechanistic understanding to a new concept for photoreduction catalysis
低价钛催化剂的还原反极性反应:从开发、应用和机理理解到光还原催化的新概念
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