Jump to main content
Jump to site search

Issue 38, 2019
Previous Article Next Article

Benchmark selectivity p-xylene separation by a non-porous molecular solid through liquid or vapor extraction

Author affiliations

Abstract

Solid–liquid separation of similarly sized organic molecules utilizing sorbents offers the potential for new energy-efficient approaches to a number of important industrial separations such as xylenes (C8) separations. Research on selective C8 sorption has tended to focus upon rigid porous materials such as zeolites and MOFs but has revealed generally weak selectivity that is inconsistent across the range of C8 molecules. Nevertheless, there are a few recent examples of non-porous molecular materials that exhibit relatively high selectivity for p-xylene (pX) from pX/oX, approaching that of the current benchmark pX sorbent, the zeolite H/ZSM-5. Herein, we report that a L-shaped Ag(I) complex, AgLClO4 (M), which crystallizes as a non-porous molecular solid material, offering exceptional performance for pX selectivity across the range of C8 isomers with liquid extraction selectivity values of 24.0, 10.4 and 6.2 vs. oX, eB and mX, respectively. The pX selectivities over oX and eB are among the highest yet reported. Moreover, M also exhibits strong vapor extraction selectivity and can be regenerated by exposure to vacuum drying.

Graphical abstract: Benchmark selectivity p-xylene separation by a non-porous molecular solid through liquid or vapor extraction

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 May 2019, accepted on 29 Jul 2019 and first published on 06 Aug 2019


Article type: Edge Article
DOI: 10.1039/C9SC02621E
Chem. Sci., 2019,10, 8850-8854
  • Open access: Creative Commons BY-NC license
    All publication charges for this article have been paid for by the Royal Society of Chemistry

  •   Request permissions

    Benchmark selectivity p-xylene separation by a non-porous molecular solid through liquid or vapor extraction

    N. Sun, S. Wang, R. Zou, W. Cui, A. Zhang, T. Zhang, Q. Li, Z. Zhuang, Y. Zhang, J. Xu, M. J. Zaworotko and X. Bu, Chem. Sci., 2019, 10, 8850
    DOI: 10.1039/C9SC02621E

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements