Aminosilane grafted Matrimid 5218/nano-silica mixed matrix membrane for CO2/light gases separation

Nezhadmoghadam, Elham; Chenar, Mahdi Pourafshari; Omidkhah, Mohammadreza; Nezhadmoghadam, Amir; Abedini, Reza

doi:10.1007/s11814-017-0282-z

Cited by 36 publications

(6 citation statements)

References 30 publications

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“…Polyethers, fluoroelastomers, and polydimethylsiloxane (PDMS) are available CO 2 -philic polymers containing ether and acetate groups. These groups contain electronegative atoms (F, O, N); such atoms have an electron cloud and can attract the carbon of CO 2 which has positive charge density. − Ethylene oxide (EO) units are one of the most influential groups for attaining high CO 2 permeability. , Moreover, polymers of intrinsic microporosity (PIMs), considered as a “super glassy polymer”, are also in other categories which have attracted an interest in CO 2 separation application …”

Section: Introductionmentioning

confidence: 99%

CO₂ Separation over N₂ and CH₄ Light Gases in Sorbitol-Modified Poly(ether-block-amide) (Pebax 2533) Membrane

Hassanzadeh

Abedini

Ghorbani

2022

Ind. Eng. Chem. Res.

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CO 2 emissions have become one of the biggest industry challenges in recent years. Polymeric membranes have been studied as a promising alternative for CO 2 separation in various gas streams. Poly(ether-block-amide) is a widely used polymer in CO 2 separation, due to its CO 2 -philic nature. In this study, sorbitol as a poly alcoholic modifier was applied to improve the performance of the Pebax 2533 membrane for CO 2 separation over N 2 and CH 4 . The modified membranes were synthesized with 5 to 20 wt % of sorbitol. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and polarizing optical microscopy (POM) were applied to analyze the properties of the synthesized membranes. FTIR spectra confirmed the presence of all specific bands of Pebax 2533 and sorbitol in the modified membrane. Thermal analysis revealed an increase in the glass transition temperature as the sorbitol content within the membrane matrix was raised. The crystallinity of the membranes improved as the sorbitol content was increased up to 15 wt %. FESEM images of the pure membrane showed a uniform structure; however, an increased sorbitol load resulted in a more uneven structure appearing in the final product. Based on gas permeation tests, the CO 2 permeability, CO 2 /N 2 selectivity, and CO 2 /CH 4 selectivity enhanced from 392.5 Barrer, 37.74, and 9.5 in pure membranes to 394.5 Barrer, 48.7, and 13.11, in the modified membrane containing 15 wt % of sorbitol, respectively, at a pressure of 10 bar.

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Section: Introductionmentioning

confidence: 99%

CO₂ Separation over N₂ and CH₄ Light Gases in Sorbitol-Modified Poly(ether-block-amide) (Pebax 2533) Membrane

Hassanzadeh

Abedini

Ghorbani

2022

Ind. Eng. Chem. Res.

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“…CO 2 capture and storage, separation methods include distillation systems, adsorption/desorption cycles, membrane separation, and chemical absorbents, all of which are important depending on operating conditions, process rate, and economics. Membrane technology's superiority over other conventional gas separation techniques is due to its developed technology, simple and clean process, reduced energy consumption, lower environmental impact, and flexibility 8–10 . Many studies have shown that membranes of pure polymerizable material are constrained by a trade‐off between selectivity and permeability.…”

Section: Introductionmentioning

confidence: 99%

“…Membrane technology's superiority over other conventional gas separation techniques is due to its developed technology, simple and clean process, reduced energy consumption, lower environmental impact, and flexibility. [8][9][10] Many studies have shown that membranes of pure polymerizable material are constrained by a trade-off between selectivity and permeability. That is, polymers with lower gas permeability have higher gas selectivity, conversely.…”

Section: Introductionmentioning

confidence: 99%

Performance of amine‐functionalized MIL‐53 incorporated thin‐film nanocomposite Pebax membranes for CO₂/CH₄ mixed gas separation

Fakoori

Azdarpour

Honarvar

2022

Asia-Pacific J Chem Eng

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In the present paper, the gas transport characteristics of amine-functionalized MIL-53 metal-organic frameworks (MOFs) integrated thin-film nanocomposite (TFN) Pebax 2533 membranes dip-coated over a polysulfone (PSF) layer were studied. Various characterization methods were used to investigate the impact of ligand functionalization by NH 2 on the characteristics of the generated TFN membranes and their gas transport properties, including TGA, FESEM, BET, gas adsorption tests, and a series of CO 2 /CH 4 mixed gas separation tests. According to the FESEM pictures, the NH 2 -MIL 53(Al) particles were well distributed in the TFN membranes, with no apparent agglomeration, The gas adsorption experiment of NH 2 -MIL 53(Al) particles showed that they adsorb CO 2 selectively. The incorporation of NH 2 -MIL 53(Al) into TFN membranes led to improved CO 2 /CH 4 selectivity and increased gas permeability. In addition, CO 2 /CH 4 selectivity and CO 2 permeability of the CO 2 /CH 4 mixed gas were enhanced from 11.05 to 26.55 and from 111.6 to 260.2 Barrer, respectively, when NH 2 -MIL 53(Al) 20 wt% was added to the TFN membrane. In the CO 2 /CH 4 mixed gas experiment, increasing the temperature from 30 to 50 C increased the permeability of both CH 4 and CO 2 while decreasing the CO 2 /CH 4 selectivity. Furthermore, the performance of the prepared membranes was assessed at different feed pressures ranging from 4 to 8 bar. As the feed pressure increased, the CO 2 /CH 4 separation improved. Also, with pure gas, the increase in NH 2 -MIL53(Al) loading resulted in lower diffusivity selectivity amounts for the TFN membrane than for the pristine TFN, and solubility selectivity was enhanced from 5 to 20 wt% and was reduced to 25 and 30 wt% in the TFN, respectively. In the present study, the best results were obtained at 6 bar pressure, 30 C temperature, and 20 wt% loading of NH 2 -MIL53(Al).

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“…In addition, the structure of the polyimide membrane can be improved to overcome the upper separation limit. Silica [9,10], Titanium dioxide [11,12], molecular sieves [13][14][15], and carbon nanomaterials [16,17] have been doped into polyimide membranes and significantly improved the separation effect.…”

Section: Introductionmentioning

confidence: 99%

Attapulgite Nanorod-Incorporated Polyimide Membrane for Enhanced Gas Separation Performance

Zhang

Cai

et al. 2022

Polymers

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Polyimide (PI) membrane is an ideal gas separation material due to its advantages of high designability, good mechanical properties and easy processing; however, it has equilibrium limitations in gas selectivity and permeability. Introducing nanoparticles into polymers is an effective method to improve the gas separation performance. In this work, nano-attapulgite (ATP) functionalized with KH-550 silane coupling agent was used to prepare polyimide/ATP composite membranes by in-situ polymerization. A series of characterization and performance tests were carried out on the membranes. The obtained results suggested a significant increase in gas permeability upon increasing the ATP content. When the content of ATP was 50%, the gas permeability of H2, He, N2, O2, CH4, and CO2 reached 11.82, 12.44, 0.13, 0.84, 0.10, and 4.64 barrer, which were 126.87%, 119.40%, 160.00%, 140.00%, 150.00% and 152.17% higher than that of pure polyimide, respectively. No significant change in gas selectivity was observed. The gas permeabilities of membranes at different pressures were also investigated. The inefficient polymer chain stacking and the additional void volume at the interface between the polymer and TiO2 clusters leaded to the increase of the free volume, thus improving the permeability of the polyimide membrane. As a promising separation material, the PI/ATP composite membrane can be widely used in gas separation industry.

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Aminosilane grafted Matrimid 5218/nano-silica mixed matrix membrane for CO2/light gases separation

Cited by 36 publications

References 30 publications

CO₂ Separation over N₂ and CH₄ Light Gases in Sorbitol-Modified Poly(ether-block-amide) (Pebax 2533) Membrane

CO₂ Separation over N₂ and CH₄ Light Gases in Sorbitol-Modified Poly(ether-block-amide) (Pebax 2533) Membrane

Performance of amine‐functionalized MIL‐53 incorporated thin‐film nanocomposite Pebax membranes for CO₂/CH₄ mixed gas separation

Attapulgite Nanorod-Incorporated Polyimide Membrane for Enhanced Gas Separation Performance

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Aminosilane grafted Matrimid 5218/nano-silica mixed matrix membrane for CO2/light gases separation

Cited by 36 publications

References 30 publications

CO2 Separation over N2 and CH4 Light Gases in Sorbitol-Modified Poly(ether-block-amide) (Pebax 2533) Membrane

CO2 Separation over N2 and CH4 Light Gases in Sorbitol-Modified Poly(ether-block-amide) (Pebax 2533) Membrane

Performance of amine‐functionalized MIL‐53 incorporated thin‐film nanocomposite Pebax membranes for CO2/CH4 mixed gas separation

Attapulgite Nanorod-Incorporated Polyimide Membrane for Enhanced Gas Separation Performance

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Product

Resources

About

CO₂ Separation over N₂ and CH₄ Light Gases in Sorbitol-Modified Poly(ether-block-amide) (Pebax 2533) Membrane

CO₂ Separation over N₂ and CH₄ Light Gases in Sorbitol-Modified Poly(ether-block-amide) (Pebax 2533) Membrane

Performance of amine‐functionalized MIL‐53 incorporated thin‐film nanocomposite Pebax membranes for CO₂/CH₄ mixed gas separation