二甲基甲酰胺(DMF)在同样条件下只与重稀土硝酸盐水合物发生配体交换反应,生成固体配合物。测定它们的热力学常数,可提供这些配合物在稀土分离工艺中应用的理论依据。本文用转动弹量热计测定了硝酸钆与二甲基甲酰胺配合物的恒容燃烧能,换算了它的标准燃烧焓,并由此计算出它的标准生成焓。这些数据未见文献报道。 (一) 实验部分 Dimethylformamide (DMF) undergoes a ligand exchange reaction with heavy rare earth nitrate hydrate under the same conditions to form a solid complex. The determination of their thermodynamic constants can provide the theoretical basis for the application of these complexes in the rare earth separation process. In this paper, the constant volume combustion energy of gadolinium nitrate and dimethylformamide was determined by rotating bomb calorimeter. The standard enthalpy of formation was calculated and the standard enthalpy of formation was calculated. These data have not been reported in the literature. (A) Experimental part