燃料化学学报2018，Vol.46Issue(6)：710-716,7.
甲苯在多级孔丝光沸石上的吸附平衡和吸附动力学
Adsorption equilibrium and kinetics of toluene on hierarchical mordenite
摘要
Abstract
The adsorption isotherms and kinetic curves of toluene on a series of hierarchical mordenite zeolites with different mesoporosities were measured to investigate the effect of hierarchical pore structures of mordenite on the adsorption and kinetics.The isotherms of hierarchical mordenites show the combination of characteristics of both micropore and mesopore adsorption.Furthermore, the fitting of experimental isothermal data of toluene reveals that the isotherms of toluene can be well described by dual-sites Toth-type model.The fitting parameters and the Henry's constants (KH) and the initial heats of adsorption (Qst) calculated show that the introduction of mesopores into mordenite weakens the interaction between toluene and zeolitic surface.Additionally, the adsorption kinetic curves show that the adsorption rates of toluene on hierarchical mordenite are much larger than that on microporous mordenite, revealing the enhanced effect of mesopore on the mass transfer in zeolites.关键词
多级孔丝光沸石/甲苯/吸附等温线/吸附动力学/双位Toth吸附模型Key words
hierarchical mordenite zeolite/toluene/adsorption isotherms/adsorption kinetics/dual-site toth model分类
化学化工引用本文复制引用
张辉,杨元涛,马静红,李瑞丰..甲苯在多级孔丝光沸石上的吸附平衡和吸附动力学[J].燃料化学学报,2018,46(6):710-716,7.基金项目
The project was supported by National Nature Science Foundation of China (U1510127).国家自然科学基金(U1510127)资助 （U1510127）
