Remarkable separation of C 5 olefins in anion-pillared hybrid porous materials  

作　　者：Ying Yu Lifeng Yang Bin Tan Jianbo Hu Qingju Wang Xili Cui Huabin Xing 

机构地区：[1]Key Laboratory of Biomass Chemical Engineering of Ministry of Education,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China [2]Institute of Zhejiang University-Quzhou,Quzhou 324000,China [3]Ningxia Coal Industry Co.,Ltd,CHN Energy,Shizuishan 753200,China

出　　处：《Nano Research》2021年第2期541-545,共5页纳米研究（英文版）

基　　金：the Zhejiang Provincial Natural Science Foundation of China(No.LR20B060001);the Key Research and Development Program of Ningxia(No.2018BDE02057);the National Natural Science Foundation of China(No.U1862110,21938011);Zhejiang University Academic Award for Out-standing Doctoral Candidates,and the Research Computing Center in College of Chemical and Biological Engineering at Zhejiang University.The single-crystal X-ray diffraction data of TIFSIX-2-Cu-i have been deposited in the Cambridge Crystallographic Data Centre under accession num ber CCDC:1857691.

摘　　要：C5 olefin separation is of great importance and challenge in industry with the increasing demand for synthetic rubber.However,the related study is limited due to the complex compositions and the similar boiling points.Here,we for the first time employ two anionpillared hybrid porous materials(ZU-62 and TIFSIX-2-Cu-i)towards the challenging separation of C5 olefin mixtures(trans-2-pentene,1-pentene and isoprene).These two adsorbents not only exhibit the unprecedented separation performance,but also show excellent recycle performance.Owing to the favorable electrostatic environment within a suitable confined space,TIFSIX-2-Cu-i is able to distinguish the three C5 olefins(frans-2-pentene,1-pentene and isoprene)with a high uptake of trans-2-pentene(3.1mmgol·g^(-1))ZU-62(also termed as NbOFFIVE-2-Cu-i)with contracted aperture size shows exclusion effect to the relatively large molecule of isoprene at low pressure range(0-6 kPa),contributing to the excellent separation selectivity of 1-pentene/isoprene(300).The excellent separation performance of ZU-62 and TIFSIX-2-Cu-i is verified by the breakthrough experiment.And interestingly,the regeneration tests show that C5 olefins can be easily desorbed from ZU-62,TIFSIX-2-Cu-i under 298 K.Moreover,the detailed adsorption behavior is further revealed by simulation studies.

关 键 词：C5 olefin SEPARATION metal-organic frameworks adsorption 

分 类 号：TB33[一般工业技术—材料科学与工程]