Thin Film Composite Mixed-Matrix Membranes Based on Matrimid and Zeolitic Imidazolate Frameworks for CO2/N2 Separation Performance
Year: 2024
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Membrane-based gas separation processes are a technology in continuous evolution. Various types of polymer membranes have been developed, many exhibiting high CO 2 permeability and selective properties over competing gases such as N 2 and CH 4 . In order to be competitive, membranes must be less-expensive, more stable, and more efficient, and their production must be scalable. One solution is to develop thin-film composites with mixed-matrix membranes (TFC_MMM) that have the potential to boost productivity while maintaining low costs. In this work, TFC_MMMs containing Matrimid mixed with 12 wt % ZIF-94 were prepared by kiss coating on a porous support. The SEM analysis showed that defect-free membranes with a 3 μm selective layer have been obtained. At 1 bar, the addition of ZIF resulted in improved the separation performance for the CO 2 /N 2 pair, with CO 2 permeance of 4 GPU and CO 2 /N 2 selectivity of 40, surpassing neat TFC-Matrimid (CO 2 permeance ≈ 3 GPU, CO 2 /N 2 selectivity ≈ 29). The use of ZIF-94 also had a stabilizing effect on the membranes against CO 2 plasticization at high pressure.
Authors: Elsa Lasseuguette, Maria-Chiara Ferrari
Institution: University of Edinburgh
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Award: G805718368
OpenAlex ID: W4404227456