Theoretical Calculation on Solvent Effect of Ammonium Dinitramide

被引：0

作者：

Chen X.-J. ^{[1
]}

Hu D.-D. ^{[1
]}

Hu Y.-F. ^{[1
]}

Wang Y.-L. ^{[2
]}

Ren Z.-Q. ^{[1
]}

机构：

[1] College of Chemical Engineering, Beijing University of Chemical Technology, Beijing

[2] Xi'an Modern Chemistry Research Institute, Xi'an

来源：

Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2021年 / 44卷 / 04期

关键词：

ADN; Ammonium dinitramide; Crystal habit; Hygroscopicity; Physical chemistry; Solvent effect;

D O I：

10.14077/j.issn.1007-7812.202105004

中图分类号：

学科分类号：

摘要：

To investigate the effects of solvents on the crystal nucleation and growth, solubility and hygroscopicity of ammonium dinitramide (ADN), the crystal nucleation rate of ADN in different solvents was calculated based on normalized dissolution enthalpy theory. The solvent effect on the morphology of ammonium dinitramide was investigated by the modified attachment energy model. According to the percentage of crystallographic planes with low water sorption capacity, the hygroscopicity of ADN crystals in the different solvents was also analyzed. The results show that the order for the crystal nucleation rate is as follows: cyclohexane>toluene>tributyl phosphate>dichloromethane>n-butanol>acetonitrile>γ-butyrolactone>isopropanol>ethanol>methanol>acetone>dimethyl sulfoxide>water, and it is found that the normalized dissolution enthalpy has a linear relationship with solubility. The crystal habits of ammonium dinitramide in different solvents are prismatic or plate-like shape. It is analyzed that the hygroscopicity of ammonium dinitramide after crystallization in non-polar solvents is low, while the hygroscopicity after crystallization in polar solvents is high. © 2021, Editorial Board of Journal of Explosives & Propellants. All right reserved.

引用

页码：455 / 460

页数：5

共 17 条

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