Perspective of mixed matrix membranes for carbon capture

Kanehashi, Shinji; Scholes, Colin A.

doi:10.1007/s11705-019-1881-5

Cited by 9 publications

(7 citation statements)

References 61 publications

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“…When the polymer dissolves in the specified solvent or as a result of feed moisture, swelling happens. Owing to these and many other drawbacks associated with conventional membranes, researchers’ attention has been diverted toward the mixed-matrix membranes (MMMs), the design of which is one of the promising approaches to improve the performance of conventional polymeric and inorganic membranes. , …”

Section: Membranes Used For Co2 Separationmentioning

confidence: 99%

Mixed Matrix Membranes for Carbon Capture and Sequestration: Challenges and Scope

et al. 2023

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Carbon dioxide (CO 2 ) is a major greenhouse gas responsible for the increase in global temperature, making carbon capture and sequestration (CCS) crucial for controlling global warming. Traditional CCS methods such as absorption, adsorption, and cryogenic distillation are energy-intensive and expensive. In recent years, researchers have focused on CCS using membranes, specifically solution-diffusion, glassy, and polymeric membranes, due to their favorable properties for CCS applications. However, existing polymeric membranes have limitations in terms of permeability and selectivity trade-off, despite efforts to modify their structure. Mixed matrix membranes (MMMs) offer advantages in terms of energy usage, cost, and operation for CCS, as they can overcome the limitations of polymeric membranes by incorporating inorganic fillers, such as graphene oxide, zeolite, silica, carbon nanotubes, and metal−organic frameworks. MMMs have shown superior gas separation performance compared to polymeric membranes. However, challenges with MMMs include interfacial defects between the polymeric and inorganic phases, as well as agglomeration with increasing filler content, which can decrease selectivity. Additionally, there is a need for renewable and naturally occurring polymeric materials for the industrial-scale production of MMMs for CCS applications, which poses fabrication and reproducibility challenges. Therefore, this research focuses on different methodologies for carbon capture and sequestration techniques, discusses their merits and demerits, and elaborates on the most efficient method. Factors to consider in developing MMMs for gas separation, such as matrix and filler properties, and their synergistic effect are also explained in this Review.

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Section: Membranes Used For Co2 Separationmentioning

confidence: 99%

Mixed Matrix Membranes for Carbon Capture and Sequestration: Challenges and Scope

et al. 2023

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“…Nonetheless, there is still much work to be done in order to understand how these parameters can influence the performance of mixed-matrix ion gels. Moreover, some reports suggested that the incorporation of porous solid materials (such as porous aromatic frameworks (PAFs), metal–organic polyhedra (MOP), and porous organic polymers (POPs)) can improve the membranes stability against physical aging. , This means that future developments should involve the preparation of mixed-matrix ion gels with highly stable materials and additives/fillers/solid particles that can improve the long-term stability under realistic conditions.…”

Section: Perspectives and Opportunitiesmentioning

confidence: 99%

Mixed-Matrix Ion Gel Membranes for Gas Separation

Nabais

Neves

Tomé

2022

ACS Appl. Polym. Mater.

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The potential of ionic liquid materials to improve membrane-based gas separation processes has been realized during the past few years, through the exploitation of diverse configurations, chemical functionalities, and properties. Nowadays, one of the most recent trends on this field is the development of mixed-matrix ion gels, an emerging family of ionic soft-solid materials, in which fillers are embedded into polymer/IL matrices. This review aims at presenting an overview on the latest developments and advances on ion gel membranes containing a third component, such as zeolites, metal organic frameworks, silica, graphene oxide, metal salts, and nanoparticles, for gas separation processes. We provide an analysis of this building system and highlight the diverse type of mixed-matrix ion gels hitherto reported, for which the impact of the different fillers on the ion gels’ overall properties is discussed in detail. The main challenges on their preparation, as well as their transport mechanism and how it can be influenced by the different fillers, are also addressed. Finally, technological aspects, perspectives, and opportunities to pursue this topic are discussed from a critical point of view.

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“…As stated above, kinetic separations require less material because the material acts as a gate for carbon dioxide to travel through. ,,, Given MOFs are crystalline powders, making a perfect gate requires the incorporation of MOFs into a matrix such as a polymeric membrane (i.e., mixed-matrix membranes; MMMs). Polymeric membranes are modular, easy to scale-up, and the low capital and operating costs, low energy requirements, and ease of operation are among the advantages of membrane separation processes …”

Section: Introductionmentioning

confidence: 99%

Incorporating Microporous Zn₃ and Zn₂Cd MOFs into Pebax/PVDF Mixed Matrix Membranes for Improved Carbon Dioxide Separation Performance

Basafa

Parsons

Berdichevsky

et al. 2023

ACS Appl. Energy Mater.

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A pair of related metal–organic frameworks (Zn 3 and Zn 2 Cd) developed in our group were incorporated into Pebax 30R51 and PVDF Kynar 761 polymers to fabricate mixed matrix membranes (MMMs). These MOFs were chosen due to the carbon dioxide molecular sieving ability of Zn 3 , and the slightly larger pore aperture of Zn 2 Cd that allows carbon dioxide and larger gases to enter the pores. For Pebax-based MMMs, this work demonstrated an over two-fold and four-and-a-half-fold increase in carbon dioxide permeability for Zn 3 - (15 wt %) and Zn 2 Cd-containing (10 wt %) MMMs over the pristine polymer. Separation selectivity (CO2:N2) of 4.21 and 7.33 were observed for Zn 3 and Zn 2 Cd (10 wt %). For PVDF-based MMMs, the incorporation of Zn 3 and Zn 2 Cd (10 wt %) increased the carbon dioxide permeability approximately two- and three-fold. The CO2/N2 selectivity of the PVDF membranes increased 73% (1.01 to 1.86) and 68% (1.01 to 1.68) when 15 wt % Zn 3 and Zn 2 Cd were incorporated into PVDF. The improved performance of Pebax over PVDF based MMMs is attributed to matching the permeability of the polymer bulk phase (Pebax over PVDF) and the dispersed phase (Zn 3 and Zn 2 Cd). The lower permeability allows the MOF, which has slow kinetics associated with molecular sieving, to participate in the permeation process better. With regards to Zn 3 vs Zn 2 Cd, while Zn 3 acts as a molecular sieve and Zn 2 Cd does not, we hypothesize that the faster diffusion of carbon dioxide gas in Zn 2 Cd can outcompete the lower nitrogen gas permeability and molecular sieving properties of Zn 3 . However, we expect that further increasing the pore aperture would increase the permeabilities of nitrogen gas such that differences in diffusion kinetics due to molecular size would be unimportant.

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Perspective of mixed matrix membranes for carbon capture

Cited by 9 publications

References 61 publications

Mixed Matrix Membranes for Carbon Capture and Sequestration: Challenges and Scope

Mixed Matrix Membranes for Carbon Capture and Sequestration: Challenges and Scope

Mixed-Matrix Ion Gel Membranes for Gas Separation

Incorporating Microporous Zn₃ and Zn₂Cd MOFs into Pebax/PVDF Mixed Matrix Membranes for Improved Carbon Dioxide Separation Performance

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Perspective of mixed matrix membranes for carbon capture

Cited by 9 publications

References 61 publications

Mixed Matrix Membranes for Carbon Capture and Sequestration: Challenges and Scope

Mixed Matrix Membranes for Carbon Capture and Sequestration: Challenges and Scope

Mixed-Matrix Ion Gel Membranes for Gas Separation

Incorporating Microporous Zn3 and Zn2Cd MOFs into Pebax/PVDF Mixed Matrix Membranes for Improved Carbon Dioxide Separation Performance

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Incorporating Microporous Zn₃ and Zn₂Cd MOFs into Pebax/PVDF Mixed Matrix Membranes for Improved Carbon Dioxide Separation Performance