FOX-7 在二元（N-甲基吡咯烷酮 + 丙酮、乙醇、水）混合溶剂中的溶解度和热力学特性

IF 1.7 3区材料科学 Q3 CHEMISTRY, APPLIED

Journal of Energetic Materials Pub Date : 2023-10-02 DOI:10.1080/07370652.2021.2017075

Xinhua Zhao, Jianxin Xu, Luyao Zhang, Lizhen Chen, Jianlong Wang

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引用次数: 0

摘要

摘要利用激光监测系统测量了 1,1-二氨基-2,2-二硝基乙烯（FOX-7）在二元（N-甲基吡咯烷酮+丙酮、乙醇、水）混合溶剂中的溶解度，温度在 293.15 K 至 333.15 K 之间变化，压力为 0.1 MPa。将 FOX-7 的实验溶解度数据与 van't Hoff 模型、改进的 Apelblat 模型和 Yaws 模型等热力学模型进行了关联和拟合。结果表明，FOX-7 的溶解度随温度和 N-甲基吡咯烷酮比例的增加而增加。三种模型均可用于关联溶解度数据，值得称赞。不过，Yaws 模型最适合本研究中选定的溶剂系统。最后，可以计算出 FOX-7 的标准溶解焓、标准溶解熵和标准吉布斯自由能。结果发现，FOX-7 在所有测试溶剂中的溶解都是内热和非自发的。

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Solubility and thermodynamics properties of FOX-7 in binary (N-methyl pyrrolidone + acetone, ethanol, water) mixed solvents

ABSTRACT The solubility of 1,1-diamino-2,2-dinitroethylene (FOX-7) was measured by using a laser monitoring system in binary (N-methyl pyrrolidone + acetone, ethanol, water) mixed solvents with temperatures changing from 293.15 K to 333.15 K under 0.1 MPa. The experimental solubility data for FOX-7 were correlated and fitted to thermodynamic models such as van’t Hoff model, modified Apelblat model, and Yaws model. The results show that the solubility of FOX-7 increases with increasing temperature and N-methyl pyrrolidone ratio. Three models can be used to correlate the solubility data commendably. However, the Yaws model fits best for the solvent system selected in this work. At last, the standard dissolution enthalpy, standard dissolution entropy, and standard Gibbs free energy of FOX-7 can be calculated. It was found that the dissolution of FOX-7 in all test solvents was endothermic and non-spontaneous.

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来源期刊

Journal of Energetic Materials 工程技术-材料科学：综合

CiteScore

5.70

自引率

4.80%

发文量

审稿时长

1.8 months

期刊介绍： The Journal of Energetic Materials fills the need for an international forum of scientific and technical interchange in the disciplines of explosives, propellants, and pyrotechnics. It is a refereed publication which is published quarterly. Molecular orbital calculations, synthetic and analytical chemistry, formulation, ignition and detonation properties, thermal decomposition, hazards testing, biotechnology, and toxicological and environmental aspects of energetic materials production are appropriate subjects for articles submitted to the Journal.