Title: Separating Xylene Isomers with a Calcium Metal‐Organic Framework

Journal Article · · Angewandte Chemie
 [1];  [2];  [3];  [4];  [4];  [4];  [4];  [3];  [5]; ORCiD logo [2]
  1. School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China, Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic 7098 Liuxian Blvd., Nanshan District Shenzhen 518055 P. R. China
  2. Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic 7098 Liuxian Blvd., Nanshan District Shenzhen 518055 P. R. China
  3. Department of Physics and Center for Functional Materials Wake Forest University Winston-Salem NC 27109 USA
  4. School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
  5. Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic 7098 Liuxian Blvd., Nanshan District Shenzhen 518055 P. R. China, Department of Chemistry and Chemical Biology Rutgers University 123 Bevier Road Piscataway NJ 08854 USA
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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.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0019902
OSTI ID:
2007423
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 41 Vol. 135; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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