聚合离子液体分离煤焦油中苯酚的试验研究

Experimental Study on Separation of Phenol from Coal Tar by Polymerization Ionic Liquids

基于国内外研究现状,得出了聚合离子液体P[VBnU]Cl材料的制备方法、苯酚含量的测定方法以及苯酚吸附实验方法。然后对苯酚吸附能力、吸附机理以及再生性能分析。结果表明,聚合离子液体对苯酚的吸附过程为单分子层吸附,20 min达到吸附平衡,吸附过程放出热量,低温有利于此吸附过程。同时,聚合离子液体对苯酚的吸附能力随着N/Cl比的升高而增大,其作用力主要源于N→OH之间酸碱络合作用。聚合离子液体具有良好的再生吸附能力,是一种对苯酚具有良好吸附性能的吸附材料。

The preparation method of P[VBnU]C1 polymer, the determination of phenol content and the experimental method of phenol adsorption were introduced. Then, the adsorption capacity, adsorption mechanism and regeneration performance of phenol in the simulated oil were studied. The results showed that the adsorption of phenol on the polymeric ionic liquid was adsorption on the monolayer, and the adsorption equilibrium was reached after 20 min. The adsorption process released heat and the low temperature favored the adsorption process. At the same time, the adsorption capacity of the polymeric ionic liquid to phenol increased with the increase of N/Cl ratio, and its force was mainly due to acid-base complexation between N→OH, and the polymeric ionic liquid had good adsorption ability, is a kind of adsorption material with good adsorption performance for ohenol.