文献类型：期刊文献

英文题名：Determination and correlation of solubility and Thermodynamic properties of allantoin in four binary solvents from 288.15 K to 333.15 K

作者：Liu, Junlan[1];Wu, Yanyang[1,2];Chen, Kui[1];Wu, Bin[1];Ji, Lijun[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Chem Engn Res Ctr, Shanghai, Peoples R China

年份：2024

卷号：211

期号：1

起止页码：11

外文期刊名：CHEMICAL ENGINEERING COMMUNICATIONS

收录：;EI(收录号：20232414232167);WOS:【SCI-EXPANDED(收录号:WOS:001002157600001)】；

语种：英文

外文关键词：Allantoin; Correlation; Solubility; Thermodynamic model

摘要：The solid-liquid equilibrium data of allantoin were determined by gravimetric method in four binary solvents (methanol-water, ethanol-water, ethylene glycol-water and methanol-ethylene glycol) at temperatures ranging from 288.15 to 333.15 K. The allantoin exhibited high solubility in ethylene glycol-water solvents. The solubility increased and then decreased with the increasing ratio of ethanol to water above 318.15 K. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) indicated that allantoin would be decomposed above 505 K (T-5%). X-ray diffraction (XRD) showed that no crystalline transformation occurred in the investigated system. In the meanwhile, the experimental data were correlated by four thermodynamic models including modified Apelblat equation, Van't Hoff equation, Jouyban-Acree model, and lambda h equation. All the models fitted well with the experimental data. This study can help the industrial crystallization of allantoin.