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  1. Pubblicazioni

Enhanced CO2 Capture by Sorption on Electrospun Poly (Methyl Methacrylate)

Articolo
Data di Pubblicazione:
2023
Abstract:
Poly(methyl methacrylate) (PMMA) is characterized by high CO2 capture yield under mild pressures and temperatures. A morphological modification of powdery amorphous PMMA (pPMMA) is carried out by electrospinning to increase the surface/volume ratio of the resulting electrospun PMMAs (ePMMAs). This modification improves the kinetics and the capture yields. The rate constants observed for ePMMAs are two to three times higher than those for pPMMA, reaching 90% saturation values within 5–7 s. The amount of sorbed CO2 is up to eleven times higher for ePMMAs at 1 °C, and the highest difference in captured CO2 amount is observed at the lowest tested pressure of 1 MPa. The operating life of the ePMMAs shows a 5% yield loss after ten consecutive runs, indicating good durability. Spent electrospun PMMAs after several cycles of CO2 sorption-desorption can be regenerated by melting and again electrospinning the molten mass, resulting in a CO2 capture performance that is undistinguishable from that observed with fresh ePMMA. Scanning electron and atomic force microscopies show a reduction in surface roughness after gas exposure, possibly due to the plasticization effect of CO2. This study shows the potential of electrospun PMMAs as solid sorbents for carbon capture from natural gas or pre-combustion and oxyfuel combustion processes.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
CO2 capture; electrospinning; natural gas; poly (methyl methacrylate); polymer plasticization; solid sorbents
Elenco autori:
Ciulla, M.; Canale, V.; Wolicki, R. D.; Pilato, S.; Bruni, P.; Ferrari, S.; Siani, G.; Fontana, A.; Di Profio, P.
Autori di Ateneo:
BRUNI PANTALEONE
DI PROFIO Pietro
FERRARI Stefania
FONTANA Antonella
PILATO SERENA
SIANI Gabriella
Link alla scheda completa:
https://ricerca.unich.it/handle/11564/816914
Link al Full Text:
https://ricerca.unich.it//retrieve/handle/11564/816914/402445/2023_Separations_10_00505.pdf
Pubblicato in:
SEPARATIONS
Journal
Progetto:
Innovation, digitalisation and sustainability for the diffused economy in Central Italy - VITALITY
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https://www.mdpi.com/2297-8739/10/9/505
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