Solubility determination and correlation for 1,8-dinitronaphthalene in (acetone plus methanol), (toluene plus methanol) and (acetonitrile plus methanol) mixed solvents
Solubility determination and correlation for 1,8-dinitronaphthalene in (acetone plus methanol), (toluene plus methanol) and (acetonitrile plus methanol) mixed solvents
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DOI：
10.1016/j.jct.2015.10.015
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发表时间：
2016-03-01
影响因子：
2.6
通讯作者：
Zhao, Hongkun
中科院分区：
文献类型：
--
作者：
Du, Cunbin;Xu, Renjie;Zhao, Hongkun
采用等温溶解平衡法，在101.3kPa、273.15 ~ 313.15 K的温度范围内，测定了1，8-二硝基萘在（丙酮+甲醇）、（甲苯+甲醇）和（乙腈+甲醇）混合溶剂中的溶解度。对于丙酮+甲醇和乙腈+甲醇体系，随着温度的升高和丙酮或乙腈质量分数的增加，1，8-二硝基萘的溶解度增加。对于（甲苯+甲醇）体系，在一定的甲苯组成下，1，8-二硝基萘的溶解度随温度的升高而增大;而在相同温度下，随着甲苯质量分数的增加，1，8-二硝基萘的溶解度先增大后减小。在相同温度和质量分数的丙酮、乙腈和甲苯中，1，8-二硝基萘在丙酮中的溶解度大于在其他两种溶剂中的溶解度。采用Jouyban-Acree模型、van 't Hoff-Acree模型、修正的Apelblat-Acree模型、Ma模型和Sun模型对溶解度数据进行关联。Jouyban-Acree模型被证明能很好地代表实验溶解度数据。在测定溶解度的基础上，计算了溶出过程的溶出度。1，8-二硝基萘在这些混合溶剂中的溶解是吸热过程。(C)2015爱思唯尔有限公司版权所有。
The solubility of 1,8-dinitronaphthalene in mixed solvents of (acetone + methanol), (toluene + methanol) and (acetonitrile + methanol) were determined experimentally by using the isothermal dissolution equilibrium method within the temperature range from (273.15 to 313.15) K under 101.3 kPa. The solubility of 1,8-dinitronaphthalene increased with increasing temperature and mass fraction of acetone or acetonitrile for the systems (acetone + methanol) and (acetonitrile + methanol). For the (toluene + methanol) system, at a certain composition of toluene, the solubility of 1,8-dinitronaphthalene increased with an increase in temperature; nevertheless at the same temperature, they increased at first and then decreased with an increase in mass fraction of toluene. At the same temperature and mass fraction of acetone, acetonitrile or toluene, the solubility of 1,8-dinitronaphthalene in acetone was greater than that in two others. The obtained solubility data were correlated by employing Jouyban-Acree model, van't Hoff-Acree model, modified Apelblat-Acree model, Ma model and Sun model. The Jouyban-Acree model was proven to give good representation of the experimental solubility data. On the base of the measured solubility, the dissolution enthalpies of the dissolution process were calculated. Dissolution of 1,8-dinitronaphthalene in these mixed solvents is an endothermic process. (C) 2015 Elsevier Ltd. All rights reserved.