Adsorptive Molecular Sieving of Styrene over Ethylbenzene by Trianglimine Crystals

Avishek Dey, Santanu Chand, Bholanath Maity, Prashant Bhatt, Munmun Ghosh, Luigi Cavallo, Mohamed Eddaoudi, Niveen M. Khashab

Research output: Contribution to journalArticlepeer-review

Abstract

The separation of styrene (ST) and ethylbenzene (EB) mixtures is of great importance in the petrochemical and plastics industries. Current technology employs multiple cycles of energy-intensive distillation due to the very close boiling points of ST and EB. Here, we show that the molecular sieving properties of easily scalable and stable trianglimine crystals offer ultrahigh selectivity (99%) for styrene separation. The unique molecular sieving properties of trianglimine crystals are corroborated by DFT calculations, suggesting that the incorporation of the nonplanar EB requires a significant deformation of the macrocyclic cavity whereas the planar ST can be easily accommodated in the cavity.
Original languageEnglish (US)
JournalJournal of the American Chemical Society
DOIs
StatePublished - Mar 10 2021

ASJC Scopus subject areas

  • Biochemistry
  • Colloid and Surface Chemistry
  • Chemistry(all)
  • Catalysis

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