STUDY ON THE REACTION-KINETICS OF URANIUM HEXAFLUORIDE WITH GASEOUS-HYDROGEN HALIDES

The reaction kinetics of UF6 + HX (HX = HCl, HBr and HI) has teen stud ied. It was found that the reaction rates of UF6 + HX increased with c he sequence from HCl to HI, for example, the rate constants were 2.32 x 10(-6), 6.43 x 10(-4) and 5.89 x 10(-3)s(-1). Pa-1 at room temperatu re, respectively, The apparent activation energies of the reactions of UF6 + HCl and UF6 + HBr were 11.29 and 4.18 kJ/mol, respectively. The increase order of the rates and the decrease order of the apparent ac tivation energies are consistent with the decrease in the bond energy of HX with the sequence front HCl to HI.