Jump to main content
Jump to site search

Issue 40, 2017, Issue in Progress
Previous Article Next Article

Confinement of alcohols to enhance CO2 capture in MIL-53(Al)

Author affiliations

Abstract

CO2 capture of MIL-53(Al) was enhanced by confining MeOH and i-PrOH within its micropores. Compared to MIL-53(Al), results showed an approximately 1.3 fold increase in CO2 capture capacity (kinetic isothermal CO2 adsorption experiments), via confining small amounts of both alcohols. Adsorption–desorption properties are investigated for MeOH and i-PrOH and the enthalpy of adsorption, for MeOH and i-PrOH, was measured by differential scanning calorimetry (DSC): ΔH = 50 and 56 kJ mol−1, respectively. Regeneration (CO2 adsorption–desorption cycles) of the sample MeOH@MIL-53(Al) exhibited a loss on the CO2 capacity of only 6.3% after 10 cycles and the desorption is accomplished by only turning the CO2 flow off. Static CO2 adsorption experiments (at 196 K) demonstrated a 1.25-fold CO2 capture increase (from 7.2 mmol g−1, fully activated MIL-53(Al) to 9.0 mmol g−1, MeOH@MIL-53(Al)). The CO2 enthalpy of adsorption for MIL-53(Al) and Me@OHMIL-53(Al) were estimated to be ΔH = 42.1 and 50.3 kJ mol−1, respectively. Computational calculations demonstrated the role of the hydrogen bonds formed between CO2 molecules and confined MeOH and i-PrOH molecules, resulting in the enhancement of the overall CO2 capture.

Graphical abstract: Confinement of alcohols to enhance CO2 capture in MIL-53(Al)

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Mar 2017, accepted on 02 May 2017 and first published on 10 May 2017


Article type: Paper
DOI: 10.1039/C7RA03608F
Citation: RSC Adv., 2017,7, 24833-24840
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Confinement of alcohols to enhance CO2 capture in MIL-53(Al)

    G. A. González-Martínez, J. A. Zárate, A. Martínez, E. Sánchez-González, J. R. Álvarez, E. Lima, E. González-Zamora and I. A. Ibarra, RSC Adv., 2017, 7, 24833
    DOI: 10.1039/C7RA03608F

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements