An international journal published by K. N. Toosi University of Technology

Document Type : Research Article


Nuclear Fuel Cycle Research School‎, ‎Nuclear Science and Technology Research Institute‎, ‎P.O‎. ‎Box‎: ‎11365-8486‎, ‎Tehran‎, ‎Iran


Since the production of tellurium hexafluoride gas requires the design of a suitable reactor system, so the study of tellurium oxide fluorination kinetics is of great importance. For this purpose, a novel laboratory system was designed and constructed to study the fluorination reactions by the volumetric method. Fluorine gas was injected into the reactor containing a tellurium oxide pellet, and the reaction was studied by following the changes in pressure of the gas phase using a pressure transmitter instrument. In this volumetric system, the kinetic parameters of the reaction between tellurium oxide pellet and fluorine gas have been derived for a pressure range of 137.9 and 181.2 kPa by monitoring the gas phase pressure. The reaction temperature was adjusted to 204±1 C using a heater. The results showed that the fluorination reaction of tellurium oxide is a first-order reaction. The reaction rate constant is calculated to be 6.86 × 10-4 s-1.


  • The kinetic reaction of tellurium hexafluoride synthesis was studied using the volumetric method.
  • A laboratory system was designed and constructed for the volumetric method.
  • The fluorination of tellurium oxide was a first-order reaction in the temperature of 204 ± 1 C


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