Tailoring CO2/CH4 Separation Performance of Mixed Matrix Membranes by Using ZIF-8 Particles Functionalized with Different Amine Groups

Suhaimi, Nadia Hartini; Yeong, Yin Fong; Ch’ng, Christine Wei Mann; Jusoh, Norwahyu

doi:10.3390/polym11122042

Cited by 28 publications

(11 citation statements)

References 67 publications

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“…According to Lin and Chung [97], the 6FDA-durene polymer, with four methyl groups, has a CO 2 permeability close to 700 Barrer at 2 atm and close to 500 Barrer at 10 atm, with CO 2 /CH 4 selectivity of 5 and 2.8, respectively. Suhaimi et al [99] reported enhanced separation performance for the 6FDA-durene PI with ZIF-8 particles functionalized with a different types of amine groups. The results disclosed that the membrane containing 0.5 wt% AAPTMS (N- propyl] ethylenediamine) functionalized ZIF-8 in 6FDA-durene polymer matrix displayed an enhanced and highest CO 2 permeability of 825 Barrer, and CO 2 /CH 4 ideal selectivity of 26.2 with 0.2024 FFV, compared to the 6FDAdurene without the filler at 510 Barrer, 8.6 selectivity and 0.1981 FFV [99].…”

Section: Incorporation Of Bulky Groupsmentioning

confidence: 99%

“…Suhaimi et al [99] reported enhanced separation performance for the 6FDA-durene PI with ZIF-8 particles functionalized with a different types of amine groups. The results disclosed that the membrane containing 0.5 wt% AAPTMS (N- propyl] ethylenediamine) functionalized ZIF-8 in 6FDA-durene polymer matrix displayed an enhanced and highest CO 2 permeability of 825 Barrer, and CO 2 /CH 4 ideal selectivity of 26.2 with 0.2024 FFV, compared to the 6FDAdurene without the filler at 510 Barrer, 8.6 selectivity and 0.1981 FFV [99]. Even though these 6FDA-durene hollow-fibre membranes have impressive separation performance, their gas permeation flux deteriorated significantly with time [97], which shows lower aging resistance.…”

Section: Incorporation Of Bulky Groupsmentioning

confidence: 99%

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Recent Advances of Polymeric Membranes in Tackling Plasticization and Aging for Practical Industrial CO2/CH4 Applications—A Review

et al. 2022

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Membranes are a promising technology for bulk CO2 separation from natural gas mixtures due to their numerous advantages. Despite the numerous fundamental studies on creating better quality membrane efficiency, scaling up the research work for field testing requires huge efforts. The challenge is to ensure the stability of the membrane throughout the operation while maintaining its high performance. This review addresses the key challenges in the application of polymeric technology for CO2 separation, focusing on plasticization and aging. A brief introduction to the properties and limitations of the current commercial polymeric membrane is first deliberated. The effect of each plasticizer component in natural gas towards membrane performance and the relationship between operating conditions and the membrane efficiency are discussed in this review. The recent technological advancements and techniques to overcome the plasticization and aging issues covering polymer modification, high free-volume polymers, polymer blending and facilitated transport membranes (FTMs) have been highlighted. We also give our perspectives on a few main features of research related to polymeric membranes and the way forwards. Upcoming research must emphasize mixed gas with CO2 including minor condensable contaminants as per real natural gas, to determine the competitive sorption effect on CO2 permeability and membrane selectivity. The effects of pore blocking, plasticization and aging should be given particular attention to cater for large-scale applications.

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Section: Incorporation Of Bulky Groupsmentioning

confidence: 99%

Section: Incorporation Of Bulky Groupsmentioning

confidence: 99%

Recent Advances of Polymeric Membranes in Tackling Plasticization and Aging for Practical Industrial CO2/CH4 Applications—A Review

et al. 2022

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“…Future optimization of obtaining parameters for these membranes could potentially drive to more CO 2 selective ultimately extremely competitive membranes. Additionally, as it was previous demonstrated, by functionalizing the fillers with suitable amino groups, the separation performances of the membrane could be improved, due to the enhancement of the interfacial asset between the filler and the polymer matrix [21,37].…”

Section: Membrane Testing/gas Permeationmentioning

confidence: 84%

Coal Fly Ash Derived Silica Nanomaterial for MMMs—Application in CO2/CH4 Separation

et al. 2021

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In order to obtained high selective membrane for industrial applications (such as natural gas purification), mixed matrix membranes (MMMs) were developed based on polysulfone as matrix and MCM-41-type silica material (obtained from coal fly ash) as filler. As a consequence, various quantities of filler were used to determine the membranes efficiency on CO2/CH4 separation. The coal fly ash derived silica nanomaterial and the membranes were characterized in terms of thermal stability, homogeneity, and pore size distribution. There were observed similar properties of the obtained nanomaterial with a typical MCM-41 (obtained from commercial silicates), such as high surface area and pore size distribution. The permeability tests highlighted that the synthesized membranes can be applicable for CO2 removal from CH4, due to unnoticeable differences between real and ideal selectivity. Additionally, the membranes showed high resistance to CO2 plasticization, due to permeability decrease even at high feed pressure, up to 16 bar.

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“…It is an energy-efficient separation process that requires a detailed study of gas transport properties within the membrane material. Among inorganic, polymer, and hybrid membranes, the polymeric type is being used commercially to separate gases [ 5 ]. However, a tradeoff performance between permeability and selectivity has been observed.…”

Section: Introductionmentioning

confidence: 99%

A Molecular Simulation Study of Silica/Polysulfone Mixed Matrix Membrane for Mixed Gas Separation

et al. 2021

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Polysulfone-based mixed matrix membranes (MMMs) incorporated with silica nanoparticles are a new generation material under ongoing research and development for gas separation. However, the attributes of a better-performing MMM cannot be precisely studied under experimental conditions. Thus, it requires an atomistic scale study to elucidate the separation performance of silica/polysulfone MMMs. As most of the research work and empirical models for gas transport properties have been limited to pure gas, a computational framework for molecular simulation is required to study the mixed gas transport properties in silica/polysulfone MMMs to reflect real membrane separation. In this work, Monte Carlo (MC) and molecular dynamics (MD) simulations were employed to study the solubility and diffusivity of CO2/CH4 with varying gas concentrations (i.e., 30% CO2/CH4, 50% CO2/CH4, and 70% CO2/CH4) and silica content (i.e., 15–30 wt.%). The accuracy of the simulated structures was validated with published literature, followed by the study of the gas transport properties at 308.15 K and 1 atm. Simulation results concluded an increase in the free volume with an increasing weight percentage of silica. It was also found that pure gas consistently exhibited higher gas transport properties when compared to mixed gas conditions. The results also showed a competitive gas transport performance for mixed gases, which is more apparent when CO2 increases. In this context, an increment in the permeation was observed for mixed gas with increasing gas concentrations (i.e., 70% CO2/CH4 > 50% CO2/CH4 > 30% CO2/CH4). The diffusivity, solubility, and permeability of the mixed gases were consistently increasing until 25 wt.%, followed by a decrease for 30 wt.% of silica. An empirical model based on a parallel resistance approach was developed by incorporating mathematical formulations for solubility and permeability. The model results were compared with simulation results to quantify the effect of mixed gas transport, which showed an 18% and 15% percentage error for the permeability and solubility, respectively, in comparison to the simulation data. This study provides a basis for future understanding of MMMs using molecular simulations and modeling techniques for mixed gas conditions that demonstrate real membrane separation.

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Tailoring CO2/CH4 Separation Performance of Mixed Matrix Membranes by Using ZIF-8 Particles Functionalized with Different Amine Groups

Cited by 28 publications

References 67 publications

Recent Advances of Polymeric Membranes in Tackling Plasticization and Aging for Practical Industrial CO2/CH4 Applications—A Review

Recent Advances of Polymeric Membranes in Tackling Plasticization and Aging for Practical Industrial CO2/CH4 Applications—A Review

Coal Fly Ash Derived Silica Nanomaterial for MMMs—Application in CO2/CH4 Separation

A Molecular Simulation Study of Silica/Polysulfone Mixed Matrix Membrane for Mixed Gas Separation

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