Measurement and Correlation of the Solubility of Maltitol in Different Pure Solvents, Methanol–Water Mixtures, and Ethanol–Water Mixtures
Measurement and Correlation of the Solubility of Maltitol in Different Pure Solvents, Methanol–Water Mixtures, and Ethanol–Water Mixtures
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DOI：
10.1021/acs.jced.5b00565
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发表时间：
2016-02
影响因子：
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通讯作者：
Zhenfang Li;Teng Zhang;Cui Huang;Haisheng Wang;Bo Yu;J. Gong
中科院分区：
文献类型：
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作者：
Zhenfang Li;Teng Zhang;Cui Huang;Haisheng Wang;Bo Yu;J. Gong
采用重量法测定了麦芽糖醇在298.15 ~ 323.15K温度范围内在5种纯溶剂、甲醇-水和乙醇-水混合溶剂中的溶解度。在一定温度下，麦芽糖醇在5种纯溶剂中的溶解度顺序为：异丙醇<乙醇<甲醇< DMF <水。与修正的Van 't霍夫方程相比，修正的Apelblat方程对麦芽糖醇在不同纯溶剂中的溶解度具有更好的一致性。麦芽糖醇的溶解度随温度的升高而增大，随甲醇或乙醇初始摩尔分数的增大而减小。结果表明，在甲醇-水和乙醇-水混合物中，修正的Apelblat方程的关联结果优于近理想二元溶剂/Redlich-Kister方程和两种Jouyban-Acree模型。
A gravimetric method was used to determine the solubility of maltitol in five pure solvents, methanol–water mixtures, and ethanol–water mixtures at different temperatures from 298.15 to 323.15 K. At a given temperature, the solubility of maltitol in the five pure solvents follows this order: 2-propanol < ethanol < methanol < DMF < water. Compared with the modified Van’t Hoff equation, the modified Apelblat equation presents a better consistence with the solubility of maltitol in different pure solvents. The solubility of maltitol increases with rising temperature, but decreases with the increase of the initial mole fraction of methanol or ethanol. It is found that the modified Apelblat equation can give better correlation results in methanol–water mixtures and ethanol–water mixtures than the combined nearly ideal binary solvent/Redlich–Kister equation or the two kinds of Jouyban–Acree models.