abstract
Metal–organic frameworks (MOFs) are promising porous materials for CO2 adsorption due to their high surface area, tunable properties, and selective adsorption capabilities. The recently reported Calgary Framework 20 (CALF-20) MOF has very appealing CO2 capture properties: high uptake capacity; low regeneration energy; durability (>450 000 cycles) under steam and wet acid gases; simple and scalable synthesis. This study investigates the microwave (MW)-assisted synthesis of CALF-20, which reduces reaction time 12-fold while enhancing the synthesis yield to 97%. Structural analysis confirmed that MW-synthesized CALF-20 retains its crystallographic structure and shows improved CO2 capture performance, exhibiting higher adsorption capacity (∼20% higher), selectivity, and lower regeneration energy. This method provides a rapid and efficient alternative for producing the CALF-20 adsorbent for CO2 capture and separation applications.
authors
Daniel Pereira, Mariana Sardo, Ricardo Vieira, Ildefonso Marín-Montesinos, Luís Mafra*
our authors
Daniel António Cunha Pereira
PhD Student
Ildefonso Marin Montesinos
Junior Researcher
Luís Mafra
Principal Researcher
Mariana Coutinho Sardo
Assistant ResearcherProjects
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
acknowledgements
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 (DOI 10.54499/UIDB/50011/2020), UIDP/50011/2020 (DOI 10.54499/UIDP/50011/2020) & LA/P/0006/2020 (DOI 10.54499/LA/P/0006/2020), financed by national funds through the FCT/MCTES (PIDDAC). The NMR spectrometers are part of the National NMR Network (PTNMR) and are partially supported by Infrastructure Project 022161 (cofinanced by FEDER through COMPETE 2020, POCI and PORL and FCT through PIDDAC). This work has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Grant Agreement 865974). FCT is also acknowledged by D.P. for a Ph.D. Studentship UI/BD/151048/2021 (DOI: 10.54499/UI/BD/151048/2021). M.S. for an Assistant Research (DOI 10.54499/2020.00056.CEECIND/CP1589/CT0005) and R.V. for a Junior Researcher position (CEECIND/02127/2017).