Journal of Thermal Analysis and Calorimetry ( IF 3.0 ) Pub Date : 2020-08-03 , DOI: 10.1007/s10973-020-10082-6 Ivan Skvortsov , Anton Smirnov , Elena Belova
The gas evolution dynamics has been studied during thermal oxidation of 0.15 and 0.2 mol L−1 solutions of N,N,N′,N’-tetra-n-octyldiglycolamide (TODGA) in Isopar M diluent with n-decanol depending on the concentration of nitric acid. The effect of irradiation of the system “TODGA in Isopar M with n-decanol” on the possibility of a thermal explosion has been determined. Weak exothermic effects were observed for non-irradiated and irradiated mixtures in the presence of 4 mol L−1 HNO3 at 170 °C. At a concentration of nitric acid in the aqueous phase of 8 mol L−1 or more, for non-irradiated and irradiated two-phase systems, the process passes into a thermal explosion mode.
中文翻译:
高于大气压的萃取系统“含正癸醇的Isopar M中的TODGA”的热稳定性
在N,N,N ',N'-四-正辛基二甘醇酰胺(TODGA)的0.15和0.2 mol L -1溶液中,用正癸醇根据浓度对N,N,N ',N'-四-正辛基二甘醇酰胺(TODGA)进行热氧化时,研究了气体释放动力学硝酸。已经确定了用正癸醇辐照系统“ Isopar M中的TODGA ”对热爆炸可能性的影响。在170℃下,在存在4 mol L -1 HNO 3的情况下,未辐照和辐照的混合物均观察到微弱的放热效应。在水相中硝酸浓度为8 mol L -1时 或更多,对于非辐射和辐射两相系统,该过程进入热爆炸模式。