论文部分内容阅读
研究了胺基修饰的超高交联吸附树脂NDA-99对水溶液中对甲苯磺酸、4-氯苯磺酸、4B酸等3种芳香磺酸的静态吸附性能。结果表明,Freundlich方程能够对3种芳香磺酸的吸附等温线进行很好的拟合,相关系数均大于0.99,其平衡吸附量的顺序为4B酸>对甲苯磺酸>4-氯苯磺酸。对吸附热力学与动力学的研究表明,NDA-99树脂对3种芳香磺酸的吸附均为自发进行的放热过程,主要表现为物理吸附;4-氯苯磺酸的吸附速率主要由液膜扩散控制,而对甲苯磺酸和4B酸吸附速率主要由颗粒内扩散控制。
The static adsorption properties of NDA-99, an amine-modified supercrosslinked adsorption resin, on three aromatic sulfonic acids, p-toluenesulfonic acid, 4-chlorobenzenesulfonic acid, and 4- The results show that the Freundlich equation can well fit the adsorption isotherms of the three aromatic sulfonic acids with the correlation coefficients greater than 0.99. The order of equilibrium adsorption is 4B acid> p-toluenesulfonic acid> 4-chlorobenzenesulfonic acid . The study of adsorption thermodynamics and kinetics showed that NDA-99 resin adsorbed three kinds of aromatic sulfonic acids spontaneously, and mainly showed physical adsorption. The adsorption rate of 4-chlorobenzenesulfonic acid was mainly composed of liquid film Diffusion control, while the p-toluenesulfonic acid and 4B acid adsorption rate mainly controlled by intra-particle diffusion.