摘要
以乙醇为超临界溶剂,采用恒容加温法研究煤焦油洗油馏分中的氧芴在超临界乙醇中的溶解度。通过GC检测分析萃取余液的,结果表明在萃取温度为255℃、压力为7.0MPa时,氧芴在超临界乙醇中的溶解度达到0.01 652 g/mL,萃取效率达到106.5%,实验效果明显。研究得出,温度与压力对于固体物质的超临界溶解度的具有明显的选择调节性,其中温度对于溶解度的影响较大。
As a constituent of wash oil in coal tar, dibenzofuran solubility in supercritical ethanol was studied by the method ,of heating in constant volume. The results show that under the conditions of temperature at 255℃, pressure at 7.0 MPa,dibenzofuran solubility in SC- EtOH is 0.01 652 g/mL and the extract efficiency reaches 106.5% by GC analysis. The effect of experiment is obvious. The research reveals that temperature and pressure have an effect on obvious selectivity in solid solubility in supercritical fluid, and temperature is more activity.
出处
《能源环境保护》
2011年第6期21-23,共3页
Energy Environmental Protection
关键词
氧芴
超临界乙醇萃取
GC分析
溶解度
Dibenzofuran
Supercritical ethanol extract
GC analysis
Solubility
