Richards Jason M, Martin Leigh R, Fugate Glenn A, Cheng Meng-Dawn
Isotope and Fuel Cycle Technology Division, Oak Ridge National Laboratory One Bethel Valley Road Oak Ridge TN 37831 USA
Environmental Sciences Division, Oak Ridge National Laboratory One Bethel Valley Road Oak Ridge TN 37831 USA.
RSC Adv. 2020 Sep 18;10(57):34729-34731. doi: 10.1039/d0ra05520d. eCollection 2020 Sep 16.
UF is commonly employed in enrichment technologies and is known to react rapidly with water vapor to form radioactive particulates and hydrofluoric acid vapor. The kinetics of the UF hydrolysis reaction have been observed directly for the first time. The rate appears to be half order and second order for UF and water, respectively, with a rate constant of 1.19 ± 0.22 Torr s. The proposed mechanism involves formation of the [UF·2HO] adduct two separate reactions.
六氟化铀常用于浓缩技术,并且已知它会与水蒸气迅速反应形成放射性微粒和氢氟酸蒸气。六氟化铀水解反应的动力学首次得到了直接观测。该反应速率对于六氟化铀和水而言似乎分别为半级反应和二级反应,速率常数为1.19 ± 0.22托每秒。所提出的反应机理涉及通过两个单独的反应形成[UF·2H₂O]加合物。