CO 2 /CH 4 separation by high performance co-casted ZIF-8/Pebax 1657/PES mixed matrix membrane

Jomekian, Abolfazl; Behbahani, Reza Mosayebi; Mohammadi, Toraj; Kargari, Ali

doi:10.1016/j.jngse.2016.03.067

Cited by 112 publications

(38 citation statements)

References 42 publications

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“…The hard polyamide (PA) blocks supply mechanical strength and the presence of the polar ethylene oxide (PEO) group, increases the affinity for CO 2 , allowing for a good CO 2 /non-polar (H 2 , N 2 , and CH 4 ) species separation and permselectivity. Several membranes have been prepared in the form of composite hollow fibre membranes [30][31][32], hybrid and mixed matrix membranes for gas separation [33][34][35][36][37][38][39][40][41][42][43]. Mixed matrix membranes based on amine-functionalized and pristine MIL-53(Al) in Pebax1657 have shown an increased CO 2 separation and the higher permeability (PCO 2 100 Barrer and αCO 2 /CH 4 = 17; CO 2 /N 2 = 50), was attributed to high porosity introduced by the presence of the MOF, as well as the selective adsorption of CO 2 inside the MOF [41].…”

Section: Introductionmentioning

confidence: 99%

Glassy PEEK-WC vs. Rubbery Pebax®1657 Polymers: Effect on the Gas Transport in CuNi-MOF Based Mixed Matrix Membranes

et al. 2020

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Mixed matrix membranes (MMMs) are seen as promising candidates to overcome the fundamental limit of polymeric membranes, known as the so-called Robeson upper bound, which defines the best compromise between permeability and selectivity of neat polymeric membranes. To overcome this limit, the permeability of the filler particles in the MMM must be carefully matched with that of the polymer matrix. The present work shows that it is not sufficient to match only the permeability of the polymer and the dispersed phase, but that one should consider also the individual contributions of the diffusivity and the solubility of the gas in both components. Here we compare the gas transport performance of two different MMMs, containing the metal-organic framework CuNi-MOF in the rubbery Pebax ® 1657 and in the glassy poly(ether-ether-ketone) with cardo moiety, PEEK-WC. The chemical and structural properties of MMMs were investigated by means of FT-IR spectroscopy, scanning electron microscopy and EDX analysis. The influence of MOF on the mechanical and thermal properties of both polymers was investigated by tensile tests and differential scanning calorimetry, respectively. The MOF loading in Pebax ® 1657 increased the ideal H 2 /N 2 selectivity from 6 to 8 thanks to an increased H 2 permeability. In general, the MOF had little effect on the Pebax ® 165 membranes because an increase in gas solubility was neutralized by an equivalent decrease in effective diffusivity. Instead, the addition of MOF to PEEK-WC increases the ideal CO 2 /CH 4 selectivity from 30 to~48 thanks to an increased CO 2 permeability (from 6 to 48 Barrer). The increase in CO 2 permeability and CO 2 /CH 4 selectivity is maintained under mixed gas conditions. natural gas treatment (CO 2 /CH 4 ) [6], and post-combustion carbon capture from flue gas (CO 2 /N 2 ) [7]. This increasing interest is dictated by the advantages of membrane technology compared to traditional gas separation techniques. Gas separation by means of membrane technology is an economical process; it is easily scalable and it can be used in non-drastic temperature and pressure conditions, which are more environmentally friendly. Despite numerous efforts to develop new materials for gas separation, the membrane market still needs to overcome some challenges. In fact, the highly permeable rubbery polymers present low selectivity, and the highly-selective glassy polymers are less permeable. To overcome this trade-off between permeability and selectivity, extensively reported by Robeson in 1991 and in 2008 [8,9], researchers are focusing on the design and development of hybrid membranes based on the combination of two different materials in order to get the advantages of both [10]. According to this concept, a valid strategy is the embedding of porous metal-organic frameworks (MOFs) in the polymer matrix in order to obtain mixed matrix membranes (MMMs) with enhanced gas transport properties [11][12][13][14][15][16]. MOFs are an attractive new class of microporous materials built by the combination o...

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Section: Introductionmentioning

confidence: 99%

Glassy PEEK-WC vs. Rubbery Pebax®1657 Polymers: Effect on the Gas Transport in CuNi-MOF Based Mixed Matrix Membranes

et al. 2020

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“…Consequently, because of CO 2 ’s upper critical temperature and affinity to the membrane matrix, it has the highest permeability of these gases, whereas N 2 has the least permeability because of its smaller kinetic diameter, lower critical temperature, and lower condensability compared to CH 4 …”

Section: Resultsmentioning

confidence: 99%

“…An increase in gas permeability within the membranes fabricated by PEBAX 1657 was reported by Lin and Freeman and by Chen et al . Higher permeability stems from an increase in poly ether content in the membrane structure, which is the same as an increase in the total free volume . Fillers are normally categorized into two main classifications: porous and nonporous.…”

Section: Introductionmentioning

confidence: 99%

“…Higher gas diffusion results from the presence of small amounts of inorganic material, leading to the disruption of polymer chains caused by an increase in the free volume. Iron oxide is a multifunctional material owing to its chemical and physical properties, such as a high electrochemical coupling coefficient, a broad range of radiation absorption, high chemical stability, and high photo stability …”

Section: Introductionmentioning

confidence: 99%

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Magnetic nanoFe₂O₃ – incorporated PEBA membranes for CO₂/CH₄ and CO₂/N₂ separation: experimental study and grand canonical Monte Carlo and molecular dynamics simulations

2019

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Mixed matrix membranes (MMMs) comprised of organic selective polymers and inorganic nano‐particles under the name of fillers have attracted much attention in the field of gas separation. In this study, poly (amide‐6‐b‐ethylene oxide) [PEBA]/Fe2O3 mixed matrix membranes were prepared using the dry phase separation technique with ethanol / water (70/30 wt%) as solvent. Various amount of Fe2O3 nanoparticles were chosen to disperse within the polymer matrix (0, 0.5, 1, 1.5 and 2 wt% of polymer). To prepare this type of novel membrane, a magnetic field of 0.3 T was used to align the position of NPs. The structural properties and surface morphology of prepared membranes were characterized by field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM). Field emission scanning electron microscopy analysis was also used to study the physical bonding. Phase identification and crystallinity, effective area, and distribution of pore size were investigated by X‐ray diffraction (XRD) and Brunauer–Emmett–Teller (BET) analysis. Carbon dioxide permeability through these membranes increased with pressure in the range of 2 to 14 bar. Magnetic membrane loaded with 1.5 wt% of Fe2O3 gave the best performance: CO2 permeability, CO2/CH4, and CO2/N2 selectivity were enhanced by 30, 42 and 81%, compared to a pure membrane, respectively. The results indicated that the magnetic MMMs gave better separation performance than pure membranes. Molecular simulation has also been used to investigate the structural and transport properties of fabricated membranes. Structural characterizations like radial distribution function (RDF), fractional free volume (FFV), and X‐ray diffraction were applied to the simulated membrane cells. Grand canonical Monte Carlo (GCMC) and molecular dynamic (MD) simulations, were used to calculate the selectivity and diffusivity of membranes. Results from experimental tests and simulation runs revealed that the selectivity and permeability of fabricated and simulated membranes are consistent. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…Pebax 1657 is introduced in this research as a selective layer due to its excellent CO 2 adsorbent. 6,7 The unique structure of the elastomer combines both mechanical stability of the polyamide and the soft segment of polyether which act as a separation channel. This combination is believed to be able to improve the permeability-selectivity of PVDF membranes.…”

Section: Introductionmentioning

confidence: 99%

Biomethane Purification Using PVDF/Pebax 1657 Thin Film Composite Membrane

Wahab¹,

Sunarti²,

Latif³

2017

JPS

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CO 2 /CH 4 separation by high performance co-casted ZIF-8/Pebax 1657/PES mixed matrix membrane

Cited by 112 publications

References 42 publications

Glassy PEEK-WC vs. Rubbery Pebax®1657 Polymers: Effect on the Gas Transport in CuNi-MOF Based Mixed Matrix Membranes

Glassy PEEK-WC vs. Rubbery Pebax®1657 Polymers: Effect on the Gas Transport in CuNi-MOF Based Mixed Matrix Membranes

Magnetic nanoFe₂O₃ – incorporated PEBA membranes for CO₂/CH₄ and CO₂/N₂ separation: experimental study and grand canonical Monte Carlo and molecular dynamics simulations

Biomethane Purification Using PVDF/Pebax 1657 Thin Film Composite Membrane

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CO 2 /CH 4 separation by high performance co-casted ZIF-8/Pebax 1657/PES mixed matrix membrane

Cited by 112 publications

References 42 publications

Glassy PEEK-WC vs. Rubbery Pebax®1657 Polymers: Effect on the Gas Transport in CuNi-MOF Based Mixed Matrix Membranes

Glassy PEEK-WC vs. Rubbery Pebax®1657 Polymers: Effect on the Gas Transport in CuNi-MOF Based Mixed Matrix Membranes

Magnetic nanoFe2O3 – incorporated PEBA membranes for CO2/CH4 and CO2/N2 separation: experimental study and grand canonical Monte Carlo and molecular dynamics simulations

Biomethane Purification Using PVDF/Pebax 1657 Thin Film Composite Membrane

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Product

Resources

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Magnetic nanoFe₂O₃ – incorporated PEBA membranes for CO₂/CH₄ and CO₂/N₂ separation: experimental study and grand canonical Monte Carlo and molecular dynamics simulations