物理化学学报 >> 2015, Vol. 31 >> Issue (12): 2251-2258.doi: 10.3866/PKU.WHXB201510232

热力学,动力学和结构化学 上一篇    下一篇

UF4/KBr在空气中的室温水解及其热转化行为在线FT-IR研究

仲敬荣,邵浪,余春荣,任一鸣()   

  • 收稿日期:2015-08-25 发布日期:2015-12-04
  • 基金资助:
    国家自然科学基金(21507118)

In-situ FT-IR Study of Hydrolyzation Reaction at Ambient Temperature and Thermal Transformation Behaviors of UF4/KBr in Air

Jing-Rong. ZHONG,Lang. SHAO,Chun-Rong. YU,Yi-Ming. REN()   

  • Received:2015-08-25 Published:2015-12-04
  • Supported by:
    the National Natural Science Foundation of China(21507118)

摘要:

采用原位透射式傅里叶变换红外(FT-IR)光谱仪在线研究了UF4/KBr在空气中室温条件下的水解反应及其热转化行为,获取反应前后不同铀化合物的红外光谱变化图.结果表明, UF4/KBr在空气中的水解反应,首先主要生成的是UO2F2及其水合物形式;随着时间增长,还伴生有U3O8, UO2, UO3等多种铀化合物;加热过程中, UF4/KBr的水解产物发生相互转化反应,其中形成的铀酰化合物最后全部转变为铀的氧化物形式.

关键词: UF4, FT-IR, 水解反应, 转化行为

Abstract:

The hydrolyzation reaction and thermal transformation of UF4/KBr in air at ambient temperatures were studied by in-situ transmission Fourier transform infrared (FT-IR) spectroscopy. The infrared spectra for a series of different compounds containing uranium before and after reaction were obtained. Following hydrolysis of UF4/KBr in air, the primary products were UO2F2 and their hydrolysates. Other products, including U3O8, UO2, and UO3, appeared with increased reaction time. During the heating process, the hydrolysates of UF4/KBr reacted with each other, finally yielding only uranium oxides.

Key words: UF4, FT-IR, Hydrolyzation reaction, Transformation behavior

MSC2000: 

  • O641