Enhanced CO2-selective behavior of Pebax-1657: A comparative study between the influence of graphene-based fillers

Pazani, Farhang; Aroujalian, Abdolreza

doi:10.1016/j.polymertesting.2019.106264

Cited by 45 publications

(26 citation statements)

References 50 publications

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“…The results indicate that the permeability of all gases increases, as the pressure varies from 3 to 7 bar; however, the increase in the permeability of N 2 and CH 4 is very smooth for the MMMs containing unmodified SNPs. The observed trend for the CO 2 permeability is a common behavior for the rubbery membranes that have been reported in other papers , , .…”

Section: Resultssupporting

confidence: 85%

“…Generally, since polymers contain a large crystalline region, the peaks in the XRD pattern are narrow with strong intensity, whereas those of amorphous polymers are rather broad and weak [9]. Pebax-1657 is a semi-crystalline copolymer containing both polyether (PE) and polyamide (PA) segments, which form a semi-crystalline structure resulting from hydrogen bonding between the PA groups [36].…”

Section: Characterization Of the Membranesmentioning

confidence: 99%

“…Pazani et al [9] observed that the permeability of N 2 and CO 2 gases enhanced in the MMMs of Pebax-1657/GO with increasing feed pressures. Figure 9b also shows the effects of feed pressure on the ideal selectivity of pair gases.…”

Section: Effect Of Feed Pressurementioning

confidence: 99%

“…In this context, various fillers such as zeolites [6][7][8], graphene oxide (GO) [9][10][11][12][13], carbon nanotubes (CNTs) [14,15], SiO 2 [6,16], zinc oxide [17], and metal-organic frameworks (MOFs) including zeolitic imidazolate frameworks (ZIFs) [6,[18][19][20], Material Institute Lavoisier (MIL)-53 [21,22], MIL-101 [19,23], Universitetet i Oslo (UiO)-66 [19,24], and copper(II) benzene-1,3,5-tricarboxylate (CuBTC) [25] were used to improve pure polymeric membrane gas separation performance. In contrast, compatibility between polymers and fillers is usually poor due to differences in their characteristics [2].…”

Section: Introductionmentioning

confidence: 99%

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CH₄‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

et al. 2020

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Mixed-matrix membranes were prepared by incorporating functionalized silica nanoparticles (SNPs) into the poly(ether-block-amide). The gas permeation properties of membranes were investigated for the separation of N 2 and CO 2 from CH 4. Results revealed that chemical modification of SNPs and incorporation of the carboxylic groups on its surface had a strong interaction with the polymer matrix and improved the distribution of the nanofiller in the membrane matrix. According to the gas permeation experiments at various SNPs loadings and feed pressures, different trends were observed for the permeability and selectivity. Incorporation of the modified-SNPs nanofiller into the membrane enhanced the CH 4 permeability, as well as the CH 4 /N 2 and CO 2 /N 2 selectivities.

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Section: Resultssupporting

confidence: 85%

Section: Characterization Of the Membranesmentioning

confidence: 99%

Section: Effect Of Feed Pressurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CH₄‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

et al. 2020

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“…As shown in the figure, at the lowest temperature (25 • C), the permeability of CO 2 and CH 4 gases of the neat PEBA are estimated by 66 and 3.1 Barrer, respectively. These results agree with the literature, where polymer membranes, including PEBA are characterized by their high-free volume, which considers the main responsible for permeability [56]. Also, the amount and distribution of free volume in the substrate may influence the way of molecules pack together and its permeability [57].…”

Section: Gas Permeation Performancesupporting

confidence: 91%

A New Industrial Technology for Mass Production of Graphene/PEBA Membranes for CO2/CH4 Selectivity with High Dispersion, Thermal and Mechanical Performance

et al. 2020

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Polyether block amide (PEBA) nanocomposite membranes, including Graphene (GA)/PEBA membranes are considered to be a promising emerging technology for removing CO2 from natural gas and biogas. However, poor dispersion of GA in the produced membranes at industrial scale still forms the main barrier to commercialize. Within this frame, this research aims to develop a new industrial approach to produce GA/PEBA granules that could be used as a feedstock material for mass production of GA/PEBA membranes. The developed approach consists of three sequential phases. The first stage was concentrated on production of GA/PEBA granules using extrusion process (at 170–210 °C, depending on GA concentration) in the presence of Paraffin Liquid (PL) as an adhesive layer (between GA and PEBA) and assisted melting of PEBA. The second phase was devoted to production of GA/PEBA membranes using a solution casting method. The last phase was focused on evaluation of CO2/CH4 selectivity of the fabricated membranes at low and high temperatures (25 and 55 °C) at a constant feeding pressure (2 bar) using a test rig built especially for that purpose. The granules and membranes were prepared with different concentrations of GA in the range 0.05 to 0.5 wt.% and constant amount of PL (2 wt.%). Also, the morphology, physical, chemical, thermal, and mechanical behaviors of the synthesized membranes were analyzed with the help of SEM, TEM, XRD, FTIR, TGA-DTG, and universal testing machine. The results showed that incorporation of GA with PEBA using the developed approach resulted in significant improvements in dispersion, thermal, and mechanical properties (higher elasticity increased by ~10%). Also, ideal CO2/CH4 selectivity was improved by 29% at 25 °C and 32% at 55 °C.

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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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Enhanced CO2-selective behavior of Pebax-1657: A comparative study between the influence of graphene-based fillers

Cited by 45 publications

References 50 publications

CH₄‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

CH₄‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

A New Industrial Technology for Mass Production of Graphene/PEBA Membranes for CO2/CH4 Selectivity with High Dispersion, Thermal and Mechanical Performance

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

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Enhanced CO2-selective behavior of Pebax-1657: A comparative study between the influence of graphene-based fillers

Cited by 45 publications

References 50 publications

CH4‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

CH4‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

A New Industrial Technology for Mass Production of Graphene/PEBA Membranes for CO2/CH4 Selectivity with High Dispersion, Thermal and Mechanical Performance

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

Contact Info

Product

Resources

About

CH₄‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

CH₄‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

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