超临界乙醇萃取苯酚的实验研究  

Extraction of phenol by supercritical ethanol

作　　者：何选明[1,2] 陈诚 曾宪灿 张杜 程晓晗 

机构地区：[1]武汉科技大学化工学院,湖北武汉430081 [2]煤转化与新型炭材料湖北省重点实验室,湖北武汉430081

出　　处：《现代化工》2014年第9期106-109,共4页Modern Chemical Industry

摘　　要：以乙醇为超临界溶剂,采用恒容升温法研究了超临界乙醇对苯酚的萃取效果,探讨了温度和压力对萃取效果的影响.结果表明,在萃取温度为270 ～ 275℃,萃取压力为13 MPa左右时,萃取效果明显,萃取率达62％以上,苯酚在超临界乙醇中的质量浓度为0.015 657 g/mL,实验效果明显.研究得出,温度与压力对固体物质的超临界溶解度具有明显的选择调节性.A method about increasing temperature at constant volume is used to study the extraction efficiency of phenol with supercritieal ethanol as extraction solvent. The result shows that the extraction efficiency is obviously influenced by temperature and pressure. The excellent extraction efficiency can be obtained when the temperature and pressure are at about 270 -275℃ and about 13 MPa, respectively. The extraction efficiency can reach above 62% and the phenol concentration in supercfitical ethanol is 0. 015 657 g/mL.

关 键 词：苯酚 超临界乙醇 萃取率 

分 类 号：TQ522[化学工程—煤化学工程]