Phloroglucinol based microporous polymeric organic frameworks with-OH functional groups and high CO2 capture capacity

Alexandros P. Katsoulidis, Mercouri G. Kanatzidis

Research output: Contribution to journalArticle

192 Citations (Scopus)

Abstract

A new family of microporous polymeric organic frameworks (POF)s is described. The POFs are assembled from phlorglucinol (1,3,5-trihydroxybenzene) and several benzaldehyde derivatives under solvothermal conditions using Bakelite type chemistry of forming C-C bonds without any catalyst. The materials exhibit semiconductor-like optical absorption properties with energy gaps in the range of 1.5-2.5 eV. The new materials form as uniform, microporous, spherical particles and exhibit surface areas up to 917 m2 g -1. The micropores have a very uniform size as the gas adsorption isotherms of these amorphous materials are similar to those of crystalline microporous zeolites. The micropores are internally decorated with a large number of -OH reactive groups which are available for functionalization. The POFs capture as much as 18% of their mass of CO2 at atmospheric pressure which is significantly larger than other porous polymers including systems which exhibit much larger surface areas; sodium-functionalized POFs exhibit enhanced heat of adsorption for H2 of 9 kJ/mol compared to pristine POF at 8.3 kJ/mol.

Original languageEnglish
Pages (from-to)1818-1824
Number of pages7
JournalChemistry of Materials
Volume23
Issue number7
DOIs
Publication statusPublished - Apr 12 2011

Keywords

  • H absorption
  • Porous materials
  • gas separation
  • gas storage
  • microporous polymer

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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