AI Article Synopsis
- The purification of p-xylene (pX) from its isomers (o-xylene and m-xylene) is a complex but vital industrial process.
- Research reveals that a calcium-based metal-organic framework material, HIAM-203, efficiently separates pX due to its flexible structure.
- Experiments show that at high temperatures, pX is selectively adsorbed while oX and mX are excluded, with theoretical calculations aiding in understanding this process.
Article Abstract
The purification of p-xylene (pX) from its xylene isomers represents a challenging but important industrial process. Herein, we report the efficient separation of pX from its ortho- and meta- isomers by a microporous calcium-based metal-organic framework material (HIAM-203) with a flexible skeleton. At 30 °C, all three isomers are accommodated but the adsorption kinetics of o-xylene (oX) and m-xylene (mX) are substantially slower than that of pX, and at an elevated temperature of 120 °C, oX and mX are fully excluded while pX can be adsorbed. Multicomponent column breakthrough measurements and vapor-phase/liquid-phase adsorption experiments have demonstrated the capability of HIAM-203 for efficient separation of xylene isomers. Ab initio calculations have provided useful information for understanding the adsorption mechanism.
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| http://dx.doi.org/10.1002/anie.202310672 | DOI Listing |
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