A performance study of CAB-MWCNTs blend mixed matrix membrane for CO2/N2 separation

Le résumé fourni par la source

• The synergistic effect of MWCNTs with CAB on the gas permeance properties. • Effects of loadings on MWCNTs were studied to determine the optimize loadings. • Increment of T g indicate good interaction between disperse and continuous phases. • Enhance CO 2 permeance due to the interactions functional groups originated from β-CD. • The MMM improved the permeance and selectivity performance in all aspect. Based on literature, it is found that there have been controversial findings regarding the impact of embedding and analysing the inorganic filler within gas separation polymer matrix, targeting the carbon dioxide (CO 2 )/nitrogen (N 2 ) separation. Therefore, in this study, a Mixed Matrix Membrane (MMM), comprising of cellulose acetate butyrate (CAB) with functionalized multi-walled carbon nanotubes (MWCNTs-F), was synthesized via the wet-phase inversion method to determine CO 2 /N 2 separation performance. Accordingly, different loadings of MWCNTs-F between 0.7 wt% to 0.9 wt% were investigated. The results of MMM-0.8F gas permeation has shown that the highest CO 2 permeance is at 377.62±1.20 Gas Permeation Unit. This achieved where 0.8 wt% of MWCNTs-F was incorporated into the CAB polymer matrix with CO 2 /N 2 gas selectivity performance of 13.17 ± 1.39. In this matter, the agglomeration caused by van der Waals attraction of MWCNTs was overcome by the superior performance of MMM-0.8F. It is attributed to embedding the best loading of MWCNTs-F into the CAB polymer matrix. This study highlights the industrial scalability and potential real-world applications of MMM-0.8F. It offers a cost-effective and energy-efficient solution for CO 2 /N 2 separation with compatibility to be used into existing carbon capture and gas treatment systems.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.