Limitations and high pressure behavior of MOF-5 for CO2 capture

Joo Young Jung, Ferdi Karadas, Sonia Zulfiqar, Erhan Deniz, Santiago Aparicio, Mert Atilhan, Cafer T. Yavuz, Seung Min Han

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Porous network structures (e.g. metal-organic frameworks, MOFs) show considerable potential in dethroning monoethanol amine (MEA) from being the dominant scrubber for CO2 at the fossil-fuel-burning power generators. In contrast to their promise, structural stability and high-pressure behavior of MOFs are not well documented. We herein report moisture stability, mechanical properties and high-pressure compression on a model MOF structure, MOF-5. Our results show that MOF-5 can endure all tested pressures (0-225 bar) without losing its structural integrity, however, its moist air stability points at a 3.5 hour safety window (at 21.6°C and 49% humidity) for an efficient CO2 capture. Isosteric heats of CO2 adsorption at high pressures show moderate interaction energy between CO2 molecules and the MOF-5 sorbent, which combined with the large sorption ability of MOF-5 in the studied pressure-temperature ranges show the viability of this sorbent for CO2 capturing purposes. The combination of the physicochemical methods we used suggests a generalized analytical standard for measuring viability in CO2 capture operations. © the Owner Societies 2013.
Original languageEnglish (US)
Pages (from-to)14319-14327
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume15
Issue number34
DOIs
StatePublished - Sep 14 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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