Jiang Yunjia, Hu Jianbo, Wang Lingyao, Sun Wanqi, Xu Nuo, Krishna Rajamani, Duttwyler Simon, Cui Xili, Xing Huabin, Zhang Yuanbin
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, P.R. China.
Key laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, P.R. China.
Angew Chem Int Ed Engl. 2022 Apr 25;61(18):e202200947. doi: 10.1002/anie.202200947. Epub 2022 Mar 7.
Propyne/propylene (C H /C H ) separation is an important but challenging industrial process to produce polymer-grade C H and recover high-purity C H . Herein, we report an ultrastable TiF anion cross-linked metal-organic framework (ZNU-2) with precisely controlled pore size, shape and functionality for benchmark C H storage (3.9/7.7 mmol g at 0.01/1.0 bar and 298 K) and record high C H /C H (10/90) separation potential (31.0 mol kg ). The remarkable C H /C H (1/99, 10/90, 50/50) separation performance was fully demonstrated by simulated and experimental breakthroughs under various conditions with excellent recyclability and high productivity (42 mol kg ) of polymer-grade C H from a 1/99 C H /C H mixture. A modelling study revealed that the symmetrical spatial distribution of six TiF on the icosahedral cage surface provides two distinct binding sites for C H adsorption: one serves as a tailored single C H molecule trap and the other boosts C H accommodation by cooperative host-guest and guest-guest interactions.
丙炔/丙烯（C₃H₄/C₃H₆）分离是生产聚合物级C₃H₆和回收高纯度C₃H₄的重要但具有挑战性的工业过程。在此，我们报道了一种具有精确控制孔径、形状和功能的超稳定TiF₆阴离子交联金属有机框架（ZNU-2），用于基准C₃H₄存储（在0.01/1.0 bar和298 K下为3.9/7.7 mmol g）以及创纪录的高C₃H₄/C₃H₆（10/90）分离潜力（31.0 mol kg⁻¹）。通过在各种条件下的模拟和实验突破，充分展示了其卓越的C₃H₄/C₃H₆（1/99、10/90、50/50）分离性能，具有出色的可回收性以及从1/99的C₃H₄/C₃H₆混合物中生产聚合物级C₃H₆的高生产力（42 mol kg⁻¹）。一项建模研究表明，二十面体笼表面六个TiF₆的对称空间分布为C₃H₄吸附提供了两个不同的结合位点：一个作为定制的单个C₃H₄分子陷阱，另一个通过主客体和客体-客体协同相互作用促进C₃H₄容纳。
Zotero 插件