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 m-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–Hp interactions. Moreover, the trianglimine crystals are readily recyclable due to the reversible transformation between the guest-free and guest-loaded structures.
Bibliographical noteKAUST Repository Item: Exported on 2021-08-31
ASJC Scopus subject areas
- Materials Chemistry
- Surfaces, Coatings and Films
- Metals and Alloys
- Ceramics and Composites
- Electronic, Optical and Magnetic Materials