Tailor-Made Microporous Metal–Organic Frameworks for the Full Separation of Propane from Propylene Through Selective Size Exclusion

Hao Wang, Xinglong Dong, Valentina Colombo, Qining Wang, Yanyao Liu, Wei Liu, Xin Long Wang, Xiao Ying Huang, Davide M. Proserpio, Angelo Sironi, Yu Han, Jing Li

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35 Citations (Scopus)

Abstract

Adsorptive separation of olefin/paraffin mixtures by porous solids can greatly reduce the energy consumption associated with the currently employed cryogenic distillation technique. Here, the complete separation of propane and propylene by a designer microporous metal–organic framework material is reported. The compound, Y6(OH)8(abtc)3(H2O)6(DMA)2 (Y-abtc, abtc = 3,3′,5,5′-azobenzene-tetracarboxylates; DMA = dimethylammonium), is rationally designed through topology-guided replacement of inorganic building units. Y-abtc is both thermally and hydrothermally robust, and possesses optimal pore window size for propane/propylene separation. It adsorbs propylene with fast kinetics under ambient temperature and pressure, but fully excludes propane, as a result of selective size exclusion. Multicomponent column breakthrough experiments confirm that polymer-grade propylene (99.5%) can be obtained by this process, demonstrating its true potential as an alternative sorbent for efficient separation of propane/propylene mixtures.

Original languageEnglish
Article number1805088
JournalAdvanced Materials
Volume30
Issue number49
DOIs
Publication statusPublished - Dec 6 2018

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Keywords

  • adsorbents
  • adsorptive separation
  • metal–organic frameworks
  • molecular sieving
  • olefin/paraffin separation

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Wang, H., Dong, X., Colombo, V., Wang, Q., Liu, Y., Liu, W., Wang, X. L., Huang, X. Y., Proserpio, D. M., Sironi, A., Han, Y., & Li, J. (2018). Tailor-Made Microporous Metal–Organic Frameworks for the Full Separation of Propane from Propylene Through Selective Size Exclusion. Advanced Materials, 30(49), [1805088]. https://doi.org/10.1002/adma.201805088