第53卷第2期2024年2月应用化工AppliedChemicalIndustryVol.53No.2Feb.2024分析测试季戊四醇在二元溶剂中溶解度测定与关联司超，施云海，郑实，朱煦（华东理工大学化学工程研究所，上海200237）摘要：采用合成法测定了323.15~353.15K下季戊四醇在不同比例异丙醇-水、叔丁醇-水混合溶剂中的溶解度，并用修正的Apelblat方程、Jouyban-Acree模型和Van'tHoff-Jouyban-Acree模型对实验数据进行了关联，最大绝对偏差（D)均小于0.00433,平均相对偏差（ARD）低于3.21%，模型的计算值与实验值吻合良好。根据VantHoff方程计算了季戊四醇溶解过程的溶解恰、溶解、吉布斯自由能变化量、恰贡献值和熵贡献值。结果表明，季戊四醇在两种混合溶剂中表现出相同的溶解规律,温度升高,溶解度增加；温度相同时,其溶解度随溶剂中醇溶剂含量的增加而降低；溶解恰均大于零，温度升高利于季戊四醇溶解；溶剂中恰贡献值均大于50%，吉布斯自由能变化量主要受溶解恰变的影响。采用KAT-LSER模型分析了季戊四醇在混合溶剂的溶剂效应,得季戊四醇的溶解度主要受溶质-溶剂间氢键作用影响。关键词：季戊四醇；溶解度；模型关联；热力学分析；溶剂效应中图分类号:TQ013.1;TQ460.1(InstituteofChemicalEngineering,EastChinaUniversityofScienceandTechnology,Shanghai200237,China)Abstract:Thesolubilityofpentaerythritolindifferentproportionsofisopropanol-waterandtert-butanol-watermixedsolventsat323.15~353.15Kwasdeterminedbysyntheticmethod.TheexperimentaldatawerecorrelatedbymodifiedApelblatequation,Jouyban-AcreemodelandVan'tHoff-Jouyban-Acreemodel.Themaximumabsolutedeviation(D)waslessthan0.00433,andtheaveragerelativedeviation(ARD)waslessthan3.21%.Thecalculatedvaluesofthemodelwereingoodagreementwiththeexperi-mentalvalues.AccordingtotheVan'tHoffequation,thedissolutionenthalpy,dissolutionentropy,Gibbsfreeenergychange,enthalpycontributionvalueandentropycontributionvalueofthepentaerythritoldisso-lutionprocesswerecalculated.Theresultsshowthatpentaerythritolshowsthesamedissolutionlawinthetwomixedsolvents.Thesolubilityincreaseswiththeincreaseoftemperature.Atthesametemperature,itssolubilitydecreaseswiththeincreaseofalcoholsolventcontentinthesolvent.Thedissolutionenthalpyisgreaterthanzero,andtheincreaseoftemp...
