III International Conference

PP-III-38The activation energy found out from these dependences for ANM makes 61,6 kJ/mole,that practically coincides with the data published in work [2] for catalytic decompositionEDTA at activated charcoal (BAC) and platinized silica gel.0,11k, min -1k, min -10,10,010,0029 0,00295 0,003 0,00305 0,00311/TFig. 1. For Sibunite: S/L = 1/100;N (HNO 3 ) = 2,190,010,00288 0,00293 0,00298 0,00303 0,003081/ТFig. 2. For ANM: S/L = 1/100;N (HNO 3 ) = 2,19For Sibunite activation energy is Е а = 81,6 kJ/mole.Stability of carbon materials is checked up at long influence of nitric acid in a researchedinterval of temperatures. The possible mechanism of heterogeneous - catalytic decompositionof EDTA is discussed.This work was financed by the project of the RFBR - 06-03-96201.References1. 1 Ananjev A.V., Tananaev I.G., Shilov V.P. Heterogeneous - catalytic oxidation-reductionreactions in chemistry and technologies of a nuclear fuel cycle// Uspehi himii, 2005. №74 (11). P.1132-1155.2. Shilov V.P., Dzjubenko V.I., Astafurova L.N., Krot N.N. Heterogeneous - catalyticdecomposition of the complexons// Russian Journal of Applied chemistry, 1990. №2. P. 348 -353.542