文献类型：期刊文献

英文题名：Two-Effects-in-One: Kinetic Quantum and Molecular Sieving Effect in a Robust-Flexible [Th6Co2] Cage for both Isotope and Isomer Separation

作者：Yin, Mengjia[1]; Krishna, Rajamani[2]; Wang, Wenjing[3]; Yuan, Daqiang[4]; Fan, Yaling[1]; Feng, Xuefeng[1]; Wang, Li[5]; Luo, Feng[1]

机构：[1] East China University of Technology, China; [2] University of Amsterdam, Netherlands; [3] Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China; [4] Fujian Institute of Research on the Structure of Matter, China; [5] East China University of Science and Technology, China

年份：2020

外文期刊名：Research Square

收录：EI(收录号：20220231798)

语种：英文

外文关键词：Hydrogen - Isomers - Isotopes - Plants (botany) - Separation

摘要：Although molecular and quantum sieving (MS and QS) effects have been realized and employed to execute separation tasks, however, little is known about the coexistence of both effects in a compound and its corresponding structure. In this work, we show the first observation of coexistence of both quantum and molecular sieving effects in a [Th6Co2] cage-based compound (Th-Co-Cage-1). The [Th6Co2] cage shows 0.78 nm aperture but with an irregular crescent-like window. This allows [Th6Co2] cage to give ultrahigh uptake for hydrogen isotope and selectivity towards D2 over H2, leading to complete hydrogen isotope separation, as evidenced by experimental breakthrough test. When the size of guest molecule is more than the crescent-like window, a highly rare robust-flexible adsorption was observed, consequently leading to complete isomer separation for C4 and C6 isomers through molecular sieving effect. High thermal, water and chemical stability further supports the materials for practical separation application. The results open up a gate of material with coexistence of QS and MS effects and its fundamental design for superior separation application. ? 2020, CC BY.