文献类型：期刊文献

英文题名：Synthesis, characterization, and adsorption properties of ionic liquid-modified hypercrosslinked polystyrene resins

作者：Wu, Xiaoyu[1,2,3];Liu, Yi[1,2,4];Liu, Yongfeng[1,2,4];Di, Duolong[1,2,4];Guo, Mei[5];Zhao, Lei[6]

第一作者：Wu, Xiaoyu

通信作者：Di, DL[1]

机构：[1]Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwest Plant Resources, Lanzhou 730000, Peoples R China;[2]Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Nat Med Gansu Prov, Lanzhou 730000, Peoples R China;[3]Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China;[4]Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Resource Chem & New Mat, Qingdao 266100, Peoples R China;[5]Gansu Coll Tradit Chinese Med, Dept Pharm, Lanzhou 730000, Peoples R China;[6]Gansu Coll Tradit Chinese Med, Coll Gansu Prov, Key Lab Chem & Qual Tradit Chinese Med, Lanzhou 730000, Peoples R China

第一机构：Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwest Plant Resources, Lanzhou 730000, Peoples R China

通信机构：[1]corresponding author), Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwest Plant Resources, Lanzhou 730000, Peoples R China.

年份：2015

卷号：5

期号：89

起止页码：72601

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20153601251489);Scopus(收录号：2-s2.0-84940887520);WOS:【SCI-EXPANDED(收录号:WOS:000360552000022)】；

基金：The authors gratefully acknowledge the support of the National Natural Science Foundation of China (NSFC, no. 21374128) and the "Hundred Talents Program" of the Chinese Academy of Sciences for this work.

语种：英文

外文关键词：Ionic liquids - Polystyrenes - Scanning electron microscopy - Gas adsorption - Flavonoids - Fourier transform infrared spectroscopy - Friedel-Crafts reaction - Integral equations

摘要：A series of ionic liquid modified hypercrosslinked polystyrene resins are synthesized by adding different quantities of imidazole in the Friedel-Crafts reaction. The resins are characterized by nitrogen adsorption/desorption, Fourier transform infrared spectroscopy, elemental analysis and scanning electron microscopy. The adsorption properties of (-)-epigallocatechin gallate and (-)-epicatechin are investigated and compared with macroporous adsorption resins Seplite D101 and Seplite AB-8. The (-)-epigallocatechin gallate and (-)-epicatechin uptakes on HP-IL16 are remarkably larger than those of macroporous adsorption resins Seplite D101 and Seplite AB-8. The maximum adsorption capacity of HP-IL16 are up to 73.1 mg g(-1) for (-)-epigallocatechin gallate and 93.0 mg g(-1) for (-)-epicatechin. The adsorption isotherms are best described by the Langmuir model, and their adsorption kinetics follow the pseudo-second-order kinetic equation and intra-particle diffusion model. Analysis of the adsorption mechanism suggest that the synergistic effect of the specific surface area, molecular sieving effect, and multiple adsorption interactions are the driving forces of adsorption. The resin is reusable and presents a good desorption rate. Based on these results, this study opens up the possibility of synthesizing ionic liquid modified hypercrosslinked polymeric resins for purification of catechin from herbal plants.