2018 Fall Meeting

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Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 503-1 Reactor Chemistry, Radiation Chemistry, Corrosion, Water Chemistry,Water Quality Control

[3C01-04] Chemistry of Cesium, Spallation Products

Fri. Sep 7, 2018 9:30 AM - 10:35 AM Room C (B21 -B Building)

Chair:Kazushige Ishida(Hitachi)

9:45 AM - 10:00 AM

[3C02] Thermodynamic properties of silicon-cesium compounds at high temperature

*Rizky Dwi Septian1, Yoshinao Kobayashi1, Isamu Sato2 (1. Tokyo Institute of Technology, 2. Tokyo City University)

Keywords:Insoluble cesium particles, cesium silicate, chemical equilibrium technique, thermodynamic properties

Thermodynamic properties of SiO2 and Cs2O have been investigated to elucidate the formation mechanism of insoluble radioactive particles. The experimental condition of chemical equilibrium technique has been established to determine the activities and acitivity coefficients of SiO2 and Cs2O to understand the affinity between these two components.