Síntese e caracterização de Poli (líquidos iônicos) catiônicos e avaliação do seu potencial para captura de CO2

Abstract

With the increase in CO2 emissions into the atmosphere, it is essential to develop technologies to mitigate the environmental impacts. Technologies such as amines aqueous solutions and cellulose acetate membranes need to be improved or replaced to obtain a better economic and energetic results for CO2 capture processes. A promising research area is Poly (ionic liquids) (PILs), a class of materials that can combine the affinity of ionic liquids for acidic gases with the polymeric materials processability. Cationic PILs are gaining more and more attention for being materials of easy synthesis and incredible versatility. They can be paired with several counter-anions to change their characteristics. In this context, this work aims to synthesize and characterize ionic liquids and PILs obtained from this IL combined with different counter-anions. The sample that stands out is the PLI-PCBF4 showing the best CO2 capture results. The results were 33.5 and 104.8 mgCO2/g, at P= 1 and 10 bar respectively and T= 303.15 K. Comparing to the literature the results are similar to PILs with anionic polymeric chain and higher than PILs with cationic polymeric chain.