Experimental determination of solubilities and supersolubilities of 2,2',4,4',6,6'-hexanitrostilbene in different organic solvents

doi:10.1016/j.cjche.2016.09.004

摘要/Abstract

摘要： The laser monitor technique was used to determine solubilities and supersolubilities of HNS in N,N-dimethylformamide, dimethyl sulfoxide, acetonitrile, N-methyl-2-pyrrolidone and 1,4-butyrolactone. The experimental solubility values were correlated with λh equation, modified Apelblat equation and NRTL model. Furthermore, the dissolution enthalpy, dissolution entropy and the Gibbs energy of HNS were calculated by the experimental data. The results show that the solubilities of HNS in the above solvents increase with the increasing temperature. Besides, at the same temperature, the order of solubility is N-methyl-2-pyrrolidone > dimethyl sulfoxide > N,N-dimethylformamide > 1,4-butyrolactone > acetonitrile. The temperature dependence of predicted solubility is in agreement with the experimental data.

关键词: HNS, Solubility, Liquid-solid equilibrium, Correlation, Laser monitor technique

Abstract: The laser monitor technique was used to determine solubilities and supersolubilities of HNS in N,N-dimethylformamide, dimethyl sulfoxide, acetonitrile, N-methyl-2-pyrrolidone and 1,4-butyrolactone. The experimental solubility values were correlated with λh equation, modified Apelblat equation and NRTL model. Furthermore, the dissolution enthalpy, dissolution entropy and the Gibbs energy of HNS were calculated by the experimental data. The results show that the solubilities of HNS in the above solvents increase with the increasing temperature. Besides, at the same temperature, the order of solubility is N-methyl-2-pyrrolidone > dimethyl sulfoxide > N,N-dimethylformamide > 1,4-butyrolactone > acetonitrile. The temperature dependence of predicted solubility is in agreement with the experimental data.

Key words: HNS, Solubility, Liquid-solid equilibrium, Correlation, Laser monitor technique

Lizhen Chen, Liang Song, Yupeng Gao, Aipeng Zhu, Duanlin Cao. Experimental determination of solubilities and supersolubilities of 2,2',4,4',6,6'-hexanitrostilbene in different organic solvents[J]. , 2017, 25(6): 809-814.

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