• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International symposium on molten salts >Electronic spectra and solubilities of alkali metal uranages formed upon oxidation of uranium dioxide in alkali metal carbonate and carbonate-based melts
【24h】

Electronic spectra and solubilities of alkali metal uranages formed upon oxidation of uranium dioxide in alkali metal carbonate and carbonate-based melts

机译：在碱金属碳酸盐和碳酸盐基熔化中氧化二氧化铀氧化时形成的碱金属尿尿剂的电子光谱和溶解度

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A detailed investigation of the dissolution of alkali metal uranates in carbonate melts was performed. Solubilities of three alkali metal (Li, Na and K) mono- and diuranates were measured between 450 and 800 deg C in a range of alkali carbonate mixtures, and the mechanism of basic and acdic dissolution determined. The influence of CO_2 and O_2 partial pressures on their disolution was also examined. The rate of UO_2 partial pressures on their dissolution was also examined. The rate of UO_2 oxidation in carbonate and carbonate-based melts is controlled by a formation of a solid layer of alkali metal uranates on the surface of urania. The oxidation of UO_2 by oxygen in a variety of chloride melts was followed spectroscopically. In presence of aluminium ions uranyl chloride complexes are formed, but in pure alkali metal chlorides only alkali uranates are formed. A spectroscopic study of the dissolution of the uranates in chloride melts revealed that monouranates dissolve physically but diuranates undergo chemical dissolution forming ultimately monouranate species.
机译：进行详细研究碱金属溶解在碳酸盐熔体中的溶解。在一系列碱碳酸盐混合物中测量450至800℃的三种碱金属（Li，Na和K）单 - 和共二氨酸的溶解度，并确定碱性和ACDIC溶解的机制。还研究了CO_2和O_2部分压力对其逐渐的影响。还研究了UO_2部分压力对其溶解的速率。通过在铀表面上形成碳酸酯和基于碳酸盐的熔化中的UO_2氧化率的速率控制。采用各种氯化物熔体在各种氯化物中氧化UO_2。光谱法。在存在铝离子的存在下，形成铀酰氯络合物，但在纯碱金属氯化物中仅形成碱金属氨酸。对氯化物熔融酸盐溶解的光谱研究表明，单打酸酯溶解物理上，但共杀酸盐经历化学溶解形成最终的单蛋白酶物种。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号