Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO2 Capture

  • Kehinde A. Fayemiwo
    Kehinde A. Fayemiwo
    Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
  • Nutchapon Chiarasumran
    Nutchapon Chiarasumran
    Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
  • Seyed A. Nabavi
    Seyed A. Nabavi
    Centre for Climate and Environmental Protection, Cranfield University, Bedford MK43 0AL, U.K.
  • Konstantin N. Loponov
    Konstantin N. Loponov
    Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
  • Vasilije Manović
    Vasilije Manović
    Centre for Climate and Environmental Protection, Cranfield University, Bedford MK43 0AL, U.K.
  • Brahim Benyahia*
    Brahim Benyahia
    Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
    *E-mail: [email protected] (B.B.).
  • , and 
  • Goran T. Vladisavljević*
    Goran T. Vladisavljević
    Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
    *E-mail: [email protected]. Fax: +44 1509223923.(G.T.V.).
Cite this: Ind. Eng. Chem. Res. 2019, 58, 39, 18160–18167
Publication Date (Web):September 5, 2019
https://doi.org/10.1021/acs.iecr.9b02347
Copyright © 2019 American Chemical Society
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Abstract

Porous polymeric adsorbents for CO2 capture (HCP-MAAMs) were fabricated by copolymerization of methacrylamide (MAAM) and ethylene glycol dimethacrylate using acetonitrile and azobisisobutyronitrile as a porogen and initiator, respectively. The X-ray photoelectron and Fourier transform infrared spectra revealed a high density of amide groups in the polymer matrix of HCP-MAAMs, which enabled high selectivity to CO2. The polymer BET surface area and total pore volume was up to 277 m2 g–1 and 0.91 cm3 g–1, respectively. The highest CO2 uptake at 273 K and 1 bar CO2 pressure was 1.45 mmol g–1, and the heat of adsorption was 27–35 kJ mol–1. The polymer with the lowest cross-linking density exhibited an unprecedented CO2/N2 selectivity of 394 at 273 K. Life cycle assessment revealed a lower environmental impact of HCP-MAAMs compared to molecularly imprinted polymers. HCP-MAAMs are eco-friendly CO2 adsorbents owing to their low regeneration energy, environmentally benign fabrication process, and high selectivity.

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The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.iecr.9b02347.

  • Liquid nitrogen adsorption isotherms of HCP-MAAM-2C at 77 K, CO2/N2 selectivity values of HCP-MAAMs at 273 and 298 K, mass flow charts for the synthesis of seven polymeric CO2 sorbents per 1 kg of CO2 captured, normalized environmental impacts of previously produced MIP particles across mid-point and end-point categories, and normalized environmental impacts of HCP-MAAMs across end-point and mid-point categories in the case of 90% recycle of acetonitrile during the fabrication process (PDF)

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  8. Kehinde A. Fayemiwo, Nutchapon Chiarasumran, Seyed Ali Nabavi, Vasilije Manović, Brahim Benyahia, Goran T. Vladisavljević. CO2 capture performance and environmental impact of copolymers of ethylene glycol dimethacrylate with acrylamide, methacrylamide and triallylamine. Journal of Environmental Chemical Engineering 2020, 8 (2) , 103536. https://doi.org/10.1016/j.jece.2019.103536