Smart Hybrid Materials (SHMs) Laboratory, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Kingdom of Saudi Arabia.
Chem Commun (Camb). 2021 Sep 9;57(72):9124-9127. doi: 10.1039/d1cc03531b.
The separation of xylene isomers is one of the most challenging tasks in the petrochemical industry. Herein, we developed an efficient adsorptive molecular sieving strategy using crystalline trianglimine macrocycle (1) to separate the elusive -xylene isomer from an equimolar xylenes mixture with over 91% purity. The selectivity is attributed to the capture of the preferred guest with size/shape selectivity and C-H⋯π interactions. Moreover, the trianglimine crystals are readily recyclable due to the reversible transformation between the guest-free and guest-loaded structures.
二甲苯异构体的分离是石化工业中最具挑战性的任务之一。在此，我们开发了一种使用结晶三角脒大环（1）的高效吸附筛分策略，从等摩尔的二甲苯混合物中分离出难以获得的 - 二甲苯异构体，纯度超过 91%。这种选择性归因于通过大小/形状选择性和 C-H···π 相互作用捕获首选客体。此外，由于无客体和负载客体结构之间的可逆转化，三角脒晶体很容易回收利用。
