The effects of aminosilane grafting on NaY zeolite–Matrimid®5218 mixed matrix membranes for CO2/CH4 separation

Zeolitic imidazolate framework ZIF‐11 particles were prepared and mixed with Matrimid® 5218 polyimide, from 0 to 40 wt. % loadings. The ZIF‐11 particles and the Matrimid® 5218 polyimide matrix were studied using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X‐Ray diffraction (XRD), infrared spectroscopy (FT‐IR), and scanning electron microscopy (SEM) techniques. Surface and cross‐sectional scanning electron microscopy images of the mixed matrix membranes (MMMs) were taken to examine the dispersion of particles in the polymer matrix. No visible agglomeration between ZIF‐11 particles and the polymer matrix was spotted, even at 40 wt. % ZIF‐11 loading. Mixed matrix membranes were described by the measured permeabilities of H2, CO2 and CH4 gases. Ideal gas selectivities were determined. Permeability of all gases increased with increasing ZIF‐11 percentages. The permeabilities for all gases decreased at 40 wt. % loading, and the CO2/CH4, and H2/CH4 selectivities were increased. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

“…%. This increase in permeability performance is related to good dispersion of the filler in the polymer matrix . Keskin et al .…”

Section: Resultsmentioning

confidence: 99%

ZIF‐11/Matrimid® mixed matrix membranes for efficient CO₂, CH₄, and H₂ separations

2018

View full text Add to dashboard Cite

show abstract

“…To achieve membranes with better performance, various types of materials have been used . Among them, the polymeric membranes offered a wide range of molecular transport characteristics with easier techniques and lower membrane fabrication costs . However, polymeric membranes included a trade‐off issue between permeability and selectivity of transport species .…”

Section: Introductionmentioning

confidence: 92%

A new permeation model in porous filler–based mixed matrix membranes for CO₂ separation

2019

Self Cite

View full text Add to dashboard Cite

In this paper, a novel comprehensive permeation model for mixed matrix membranes (MMMs) is introduced. This model shows the importance of understanding and developing a more reliable model for the permeation behavior of MMMs containing porous filler nanoparticles. A new method is established to provide a more precise/large‐scale three‐dimensional MMMs geometry. The required number of spherical porous fillers in random/nonuniform positions in the polymer matrix is calculated. Interfacial equilibrium constant (K) at the polymer/filler interfaces was adjusted as the concentration ratio of the diffusing penetrants (C2 and C1) at the interface, respectively. In this case, the K values are changed by varying the intended gaseous concentration due to their permeation through the MMM. Hence, its effect on penetrants effective diffusion coefficient was examined. Then, the obtained results were evaluated with similar experimental data, which showed much consistency. Therefore, the accurate calculation method for MMMs permeability was governed for the entire range of the operating pressures in MMMs. The results showed that the permeability of MMMs increases with increasing filler particle size. On the other hand, variations that occur in the MMM permeability at various particle size were much more distinct at higher loadings. Moreover, some well‐known analytical permeation models were used to compare and validate the model's permeability results. It can be concluded that this model provides a method for more precise and realistic design of MMMs as well as to better construe the large number of related experimental data. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

“…There is ongoing pioneering work on the aminosilane grafting of zeolites for the manufacture of defect-free Matrimid-MMMs [35]. There is ongoing pioneering work on the aminosilane grafting of zeolites for the manufacture of defect-free Matrimid-MMMs [35].…”

Section: Direct Coupling Of Mof and Polymermentioning

confidence: 99%

MOF‐Based Mixed‐Matrix Membranes in Gas Separation – Mystery and Reality

Friebe

Diestel

Knebel

et al. 2016

Chemie Ingenieur Technik

View full text Add to dashboard Cite

Microporous additives like nanosized metal-organic framework (MOF) particles can improve the gas separation performance of polymer membranes. These membranes which consist of added filler particles in a continuous polymer phase are called mixed-matrix membranes (MMM). While inorganic zeolites and organic polymers do not match well, the preparation of defect-free MOF-based MMMs is much easier. However, some problems can also occur during the preparation. Solutions how to avoid them and prepare perfect MMMs are given. In practical gas separation, the selectivity of the MMMs was found to be even higher than predicted by the Maxwell model.

show abstract

The effects of aminosilane grafting on NaY zeolite–Matrimid®5218 mixed matrix membranes for CO2/CH4 separation

Cited by 160 publications

References 92 publications

ZIF‐11/Matrimid® mixed matrix membranes for efficient CO₂, CH₄, and H₂ separations

ZIF‐11/Matrimid® mixed matrix membranes for efficient CO₂, CH₄, and H₂ separations

A new permeation model in porous filler–based mixed matrix membranes for CO₂ separation

MOF‐Based Mixed‐Matrix Membranes in Gas Separation – Mystery and Reality

Contact Info

Product

Resources

About

The effects of aminosilane grafting on NaY zeolite–Matrimid®5218 mixed matrix membranes for CO2/CH4 separation

Cited by 160 publications

References 92 publications

ZIF‐11/Matrimid® mixed matrix membranes for efficient CO2, CH4, and H2 separations

ZIF‐11/Matrimid® mixed matrix membranes for efficient CO2, CH4, and H2 separations

A new permeation model in porous filler–based mixed matrix membranes for CO2 separation

MOF‐Based Mixed‐Matrix Membranes in Gas Separation – Mystery and Reality

Contact Info

Product

Resources

About

ZIF‐11/Matrimid® mixed matrix membranes for efficient CO₂, CH₄, and H₂ separations

ZIF‐11/Matrimid® mixed matrix membranes for efficient CO₂, CH₄, and H₂ separations

A new permeation model in porous filler–based mixed matrix membranes for CO₂ separation