| Popis: |
Thermochemical degradation of two-phase systems TBP-HNO3 and 30% TBP in dodecane-HNO3 (HNO3 concentration 1.5-10 M) on heating in a sealed vessel to 130-170°C is studied. Heating to 130-150°C promotes exothermic oxidation of the organic phase, resulting in its self-heating. The oxidation rate (self-heating and specific volume of gaseous products) increases with increasing HNO3 concentration in the aqueous phase. Irradiation of the organic phase decreases the thermal resistance of the systems, which is reflected in a decrease in the onset temperature of exothermic reactions. In the organic phase 30% TBP in dodecane, irradiated to doses of 1.5-2.4 MGy, in contact with 14 M HNO3, exothermic reactions start at 85-95°C. |
