Unravelling the origin of enhanced CO2 selectivity in amine-PIM-1 during mixed gas permeation
    
Yazarlar (15)
Carmen Rizzuto Consiglio Nazionale delle Ricerche (CNR)
Francesca Nardelli
Consiglio Nazionale delle Ricerche (CNR)
Marcello Monteleone
Consiglio Nazionale delle Ricerche (CNR)
Lucia Calucci
Consiglio Nazionale delle Ricerche (CNR)
C. Grazia Bezzu
Swansea University
Mariolino Carta
Swansea University
Elena Tocci
Consiglio Nazionale delle Ricerche (CNR)
Elisa Esposito
Consiglio Nazionale delle Ricerche (CNR)
Giorgio De Luca
Consiglio Nazionale delle Ricerche (CNR)
Bibiana Comesana-Gandara
Universidad de Valladolid
Neil B. Mckeown
University of Edinburgh
Doç. Dr. Bekir SAYGINER Kırşehir Ahi Evran Üniversitesi, Türkiye
Peter M. Budd
University of Manchester
Johannes C. Jansen
Consiglio Nazionale delle Ricerche (CNR)
Alessio Fuoco
Consiglio Nazionale delle Ricerche (CNR)
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı JOURNAL OF MATERIALS CHEMISTRY A (Q1)
Dergi ISSN 2050-7488 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Makale Dili Türkçe Basım Tarihi 06-2025
Cilt / Sayı / Sayfa 13 / 23 / 17865–17876 DOI 10.1039/d4ta08839e
Makale Linki https://doi.org/10.1039/d4ta08839e
Özet
Previously, it has been reported that amine-PIM-1, a polymer of intrinsic microporosity obtained by reduction of nitrile groups of PIM-1 to primary amine groups, shows enhanced CO2 selectivity during mixed gas permeation studies with respect to single gas measurements for gas pairs involving CO2. This distinct and potentially useful behaviour was ascribed to the affinity of CO2 for the polymer amine groups. Here, we demonstrate that enhanced selectivity originates from both CO2 physisorption and chemisorption. A combination of 13C and 15N solid-state NMR spectroscopic analyses of a CO2-loaded amine-PIM-1 membrane allowed the identification and quantitative determination of both chemisorbed and physisorbed species and the characterization of polymer-CO2 interactions. Experiments with 13C isotopically enriched CO2 unequivocally demonstrated the conversion of 20% of the NH2 groups into …
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