摘要
采用溶剂热法制备介孔聚二乙烯基苯(PDVB)树脂,考察了甲苯质量浓度、吸附温度和VOC种类对PDVB动态吸附过程及其性能的影响,并对其吸附等温线和穿透曲线分别进行数学拟合.结果表明:PDVB比表面积和孔容分别达1219.1 m^2/g和1.2 cm^3/g,其对甲苯的吸附等温线均属于典型的工型,相较于Langmuir,Freundlich吸附等温方程对等温线的拟合度更高;在不同温度和不同VOCs质量浓度的实验条件下,Yoon-Nelson模型对PDVB床层动态吸附穿透曲线均能进行很好拟合,从实验数据中得出的模型参数能够较好描述动态吸附过程,也能准确地预测各条件下的吸附穿透曲线.
Polydivinylbenzene （PDVB） resin with mesopore was synthesized by solvothermal method,the process and property of danymic adsorption of VOCs in different conditions（different inlet concentration,temperature and VOCs）were studied. Moreover,its adsorption isotherm and breakthrough curves were simulated with models separately. The results show that the BET surface and pore volume of PDVB were 1 219. 1 m^2/g, 1. 2 cm^3/g. Compared to Langmuir equation,its adsorption isotherms of toluene belonging to type I isotherms can be correlated with Freundlich equation better. Under the experimental conditions,the Yoon-Nelson model was found to fit the breakthrough curves well, and the model parameters obtained from the experimental data not only describe the adsorption process very well but also predict the breakthrough curves correctly.
出处
《浙江工业大学学报》
CAS
2012年第4期422-427,共6页
Journal of Zhejiang University of Technology
基金
浙江省科技厅重大专项资助项目(2007C13042)
浙江省自然科学基金资助项目(Y5090202)
