Thermodynamic analysis of the breathing of amino-functionalized MIL-53(Al) upon CO2 adsorption

Anne Boutin*, Sarah Couck, Franois Xavier Coudert, Pablo Serra-Crespo, Jorge Gascon, Freek Kapteijn, Alain H. Fuchs, Joeri F.M. Denayer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

Carbon dioxide gas adsorption in amino-functionalized MIL-53(Al) at various temperatures has been analysed in combination with temperature programmed XRD. Similarly to the regular MIL-53(Al) material, the so-called breathing phenomenon was shown to take place in the amino-MIL-53 upon adsorption of different molecules, i.e. the transition between a large-pore (lp) and a narrow-pore (np) structure. Using the osmotic thermodynamic model analysis, the temperature-loading phase diagram was derived. The overall diagram is similar to that for the regular MIL-53(Al), but a spectacular difference is the much larger stability domain of the np structure, which can be accounted for by the increased affinity for CO2 due to the presence of the amino groups in the pore space.

Original languageEnglish (US)
Pages (from-to)108-113
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume140
Issue number1-3
DOIs
StatePublished - Apr 1 2011

Keywords

  • Adsorption
  • Metal-Organic Framework
  • Theory
  • Thermodynamics

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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