Eco-friendly fabrication of highly selective amide-based polymer for CO2 capture
journal contributionposted on 12.11.2019, 09:29 authored by Kehinde Fayemiwo, Nutchapon Chiarasumran, Seyed ali NabaviSeyed ali Nabavi, Konstantin Loponov, Vasilije ManovicVasilije Manovic, Brahim BenyahiaBrahim Benyahia, Goran VladisavljevicGoran Vladisavljevic
© 2019 American Chemical Society. 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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