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Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene.

The separation of styrene (St) and ethylbenzene (EB) mixtures is important in the chemical industry. Here, we explore the St and EB adsorption selectivity of two pillar-shaped macrocyclic pillar[n]arenes (EtP5 and EtP6; n = 5 and 6). Both crystalline and amorphous EtP6 can capture St from a St-EB mi...

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Published in:Journal of the American Chemical Society Vol. 139; no. 8; pp. 2908 - 2912
Main Authors: Kecheng Jie, Ming Liu, Yujuan Zhou, Little, Marc A., Bonakala, Satyanarayana, Chong, Samantha Y., Stephenson, Andrew, Linjiang Chen, Feihe Huang, Cooper, Andrew I.
Format: Abstract
Published: American Chemical Society 3/1/2017
Subjects:
Styrene
Aromatic compounds
Online Access:View this record in EBSCOhost
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        atl: Styrene Purification by Guest-Induced Restructuring of Pillar[6]arene.
      aug:
        au:
          Kecheng Jie
          Ming Liu
          Yujuan Zhou
          Little, Marc A.
          Bonakala, Satyanarayana
          Chong, Samantha Y.
          Stephenson, Andrew
          Linjiang Chen
          Feihe Huang
          Cooper, Andrew I.
        affil:
          State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
          Department of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
      su:
        Styrene
        Aromatic compounds
      sug:
        subj:
          Styrene
          Aromatic compounds
      ab: The separation of styrene (St) and ethylbenzene (EB) mixtures is important in the chemical industry. Here, we explore the St and EB adsorption selectivity of two pillar-shaped macrocyclic pillar[n]arenes (EtP5 and EtP6; n = 5 and 6). Both crystalline and amorphous EtP6 can capture St from a St-EB mixture with remarkably high selectivity. We show that EtP6 can be used to separate St from a 50:50 v/v St:EB mixture, yielding in a single adsorption cycle St with a purity of >99%. Single-crystal structures, powder X-ray diffraction patterns, and molecular simulations all suggest that this selectivity is due to a guest-induced structural change in EtP6 rather than a simple cavity/pore size effect. This restructuring means that the material "self-heals" upon each recrystallization, and St separation can be carried out over multiple cycles with no loss of performance.
      pubtype: Academic Journal
      doctype: Abstract
      src: R
    language: English
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