文献类型：期刊文献

英文题名：Selective Adsorption and Separation of Xylene Isomers and Benzene/Cyclohexane with Microporous Organic Polymers POP-1

作者：Tan, Huiling;Chen, Qibin[1];Chen, Tingting;Liu, Honglai[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：10

期号：38

起止页码：32717

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20183905857864);WOS:【SCI-EXPANDED(收录号:WOS:000446142100099)】；

基金：This work is supported by the National Natural Science Foundation of China, the Fundamental Research Funds for the Central Universities of China, and the 111 Project of Ministry of Education of China. QC. received funding from the National Natural Science Foundation of China (no. 21576079) and the Fundamental Research Funds for the Central Universities of China (no. WK1213003). H.L. received funding from the National Natural Science Foundation of China (no. 91334203) and the 111 Project of Ministry of Education of China (no. B08021).

语种：英文

外文关键词：microporous organic polymers; xylene isomers; benzene/cyclohexane systems; separation; weak interaction

摘要：The separation of chemical substances with analogous chemical structures and physical properties remains a great challenge. In this work, triptycene-like microporous organic polymers (MOPs), POP-1, was synthesized via choosing 1,4-dimethoxybenzene (DMB) and triptycene as external cross-linkers and building blocks, respectively, and POP-1 was employed to separate xylene isomers and benzene (Bz)/cyclohexane (Cy). Results show that POP-1 has a higher uptake for m-xylene (0.29 g/g) and Bz (1.02 g/g); more intriguingly, their complete separation can be realized within 0.6 min using a column packed with POP-1. The interaction between POP-1 networks and adsorbates was also investigated using theoretical (density functional theory together with noncovalent interaction analysis) and experimental (inverse gas chromatography) approaches. Especially, both results present a good agreement, that is, weak interactions such as CH/pi interactions play a dominant role in defining the separation performance of POP-1 for xylene isomers and Bz/Cy mixtures. Our findings suggest that MOPs may open up a new route for separating the chemicals that are similar in structure and size.