1. Separating Xylene Isomers with a Calcium Metal‐Organic Framework.
- Author
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Yu, Liang, Zhang, Jian, Ullah, Saif, Yao, Jinze, Luo, Haoyuan, Huang, Jiajin, Xia, Qibin, Thonhauser, Timo, Li, Jing, and Wang, Hao
- Subjects
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METAL-organic frameworks , *ISOMERS , *XYLENE , *AB-initio calculations , *ADSORPTION kinetics - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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