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Publication Detail
Functionalized MOFs for Enhanced CO2 Capture
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Torrisi A, Bell RG, Mellot-Draznieks C
  • Publisher:
    AMER CHEMICAL SOC
  • Publication date:
    07/2010
  • Pagination:
    2839, 2841
  • Journal:
    CRYST GROWTH DES
  • Volume:
    10
  • Issue:
    7
  • Print ISSN:
    1528-7483
  • Language:
    EN
  • Keywords:
    METAL-ORGANIC FRAMEWORKS, CARBON-DIOXIDE, ADSORPTION, MIL-53, THERMODYNAMICS, TRANSITIONS, HYDROGEN, METHANE
  • Addresses:
    Bell, RG
    UCL
    Dept Chem
    London
    WC1H 0AJ
    England
Abstract
Based on computational studies, we propose new metal organic framework materials, in which the bridging ligands have been functionalized by different substituents, with the aim of improving the CO2 adsorption capacity of the material. The materials are based on the large-pore form of MIL-53(Al3+), with the following functional groups: OH-, COOH-, NH2-, and CH3-. For each form, adsorption heats and isotherms were simulated using the Grand Canonical Monte Carlo method which were found to be consistent with DFT calculations. The study illustrates the enormous impact of the functional groups in enhancing CO2 capture in the pressure range 0.01-0.5 bar and at room temperature. It also provides important insights into the structural factors which play a key role in the CO2 adsorption process in the functionalized MOFs. We propose the material (OH)(2)-MIL-53(Al3+) as an optimal candidate for improved CO2 capture at low pressures.
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