Preparation of UO_2 fine particles from uranium alkoxide

醇铀制备UO_2细颗粒

基本信息

  • 批准号:
    06680459
  • 负责人:
  • 金额:
    $ 1.28万
  • 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:
    1994
  • 资助国家:
    日本
  • 起止时间:
    1994 至 1995
  • 项目状态:
    已结题

项目摘要

UCl_4 can be used as the starting materials for U (IV) alkoxide preparation. UCl_4 was prepared from UO_2 and CCl_4. The three reaction methods of UO_2 and CCl_4 were applied. The first one was as followed : UO_2 powder and CCl_4 solution were enclosed in a PYREX capsule, which was heated about at 300゚C.The second way was one of the Chemical Vapor Deposition(CVD) method. UO_2 and CCl_4 were placed in a PYREX closed tube separately. UO_2 was heated at 550゚C,and produced UCl_4 deposited at 300-350゚C region as a single crystal. The third way was also CDV method. UO_2 was placed at the center of open PYREX tube, and heated 620゚C.Argon gas which hed been bubbling through CCl_4 solution was passed through the heated UO_2 powder. The produced UCl_4 vapor deposited about 300゚C region as a single crystal.U (IV) alkoxide can be prepared by reaction with UCl_4 produced by CVD method and Li or Na alkoxide. U (IV) ethoxide in ethanol solution which was prepared from UCl_4 and Na alkoxide was used to make UO_2 fine particles by alkoxide method. About 100mul of 90% ethanol-10% H_2O was taken into the U (IV) ethoxide solution. U (IV) ethoxide was hydrolyzed to polymerized uranium oxide, and finally to fine particles of uranium oxide, that were separated from ethanol solution by centrifuge, and were dried by infra-red lamp. The electron micrographs of the uranium oxide particles were measured by scanning electron microscope (SEM). It is concluded by the micrographs that sub-micrometer mono dispersed uranium oxide particles had been prepared.
UCl4可作为制备U(IV)醇盐的原料。以UO2和CCl4为原料,采用UO2和CCl4三种反应方法制备UCl4。第一种方法是将UO_2粉末和CCl_4溶液包裹在一个高温胶囊中,在300゚C左右加热。第二种方法是化学气相沉积法。将UO_2和CCl_4分别放置在PYREX密闭管中。UO_2在550゚C温度下加热,生成沉积在300-350゚C区的UCl4单晶。第三种方法也是CDV法。将UO_2放置在敞开的PYREX管的中心,加热620゚C,通过CCl_4溶液鼓泡的气体通过加热的UO_2粉末。用化学气相沉积法制备的UCl4与Li或Na醇盐反应可制得U(IV)醇盐,生成的UCl4蒸气沉积在约30 0゚C区。以UCl4和醇钠为原料,在乙醇溶液中制备U(IV)乙氧化物,采用醇盐法制备UO2微粒。在U(IV)乙醇溶液中加入约100-100-90%乙醇-10%H_2O。将U(IV)乙醇水解成聚合的氧化铀,最后得到细小的氧化铀颗粒,用离心机从乙醇溶液中分离出来,并用红外灯干燥。用扫描电子显微镜(SEM)对氧化铀颗粒的电子显微镜进行了观察。显微照片表明,已制备出亚微米级的单分散氧化铀颗粒。

项目成果

期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
菅沼英夫: "混合溶媒中におけるTm^<3+>の化学的挙動の研究" 核理研研究報告. 27. 23-26 (1994)
Hideo Suganuma:“混合溶剂中 Tm^<3+> 的化学行为研究”RIKEN 研究报告。27. 23-26 (1994)。
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    0
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  • 通讯作者:
三頭聰明: "Extraction of Am and Lanthanides with TBP from water-deficient nitrate medea" Journal of Alloys and Compounds. 213/214. 347-350 (1994)
Satoshi Santo:“用 TBP 从缺水的硝酸盐中提取 Am 和镧系元素”《合金与化合物杂志》213/214 (1994)。
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SATOH Isamu其他文献

SATOH Isamu的其他文献

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{{ truncateString('SATOH Isamu', 18)}}的其他基金

Materials chemistry of uranium complexes with one-axis symmetry
一轴对称铀配合物的材料化学
  • 批准号:
    22550053
  • 财政年份:
    2010
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Uranium redox-flow battery for leveling of wind power
用于风电平准化的铀氧化还原液流电池
  • 批准号:
    19360433
  • 财政年份:
    2007
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Analysis of Multilayer Structure Constituted by Light-Elements with Total Reflection PIXE
全反射PIXE光元件多层结构分析
  • 批准号:
    09558056
  • 财政年份:
    1997
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
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