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Discrimination of xylene isomers in a stacked coordination polymer

Journal Article · · Science
 [1];  [2];  [3];  [4];  [5];  [5];  [2];  [5];  [5];  [5];  [4]
  1. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China.; Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.; OSTI
  2. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China.
  3. Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.
  4. Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.; Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, P. R. China.
  5. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China.; Institute of Zhejiang University-Quzhou, Quzhou 324000, P. R. China.

The separation and purification of xylene isomers is an industrially important but challenging process. Developing highly efficient adsorbents is crucial for the implementation of simulated moving bed technology for industrial separation of these isomers. Herein, we report a stacked one-dimensional coordination polymer {[Mn(dhbq)(H2O)2], H2dhbq = 2,5-dihydroxy-1,4-benzoquinone} that exhibits an ideal molecular recognition and sieving of xylene isomers. Its distinct temperature-adsorbate–dependent adsorption behavior enables full separation ofp-,m-, ando-xylene isomers in both vapor and liquid phases. The delicate stimuli-responsive swelling of the structure imparts this porous material with exceptionally high flexibility and stability, well-balanced adsorption capacity, high selectivity, and fast kinetics at conditions mimicking industrial settings. This study may offer an alternative approach for energy-efficient and adsorption-based industrial xylene separation and purification processes.

Research Organization:
Wake Forest Univ., Winston-Salem, NC (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
SC0019902
OSTI ID:
1980732
Journal Information:
Science, Journal Name: Science Journal Issue: 6603 Vol. 377; ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English

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