High CO2 separation performance of Pebax®/CNTs/GTA mixed matrix membranes

Zhao, Dan; Ren, Jizhong; Wang, Ying; Qiu, Yongtao; Li, Hui; Hua, Kaisheng; Li, Xinxue; Ji, Jiemei; Deng, Mingke

doi:10.1016/j.memsci.2016.08.061

Cited by 134 publications

(55 citation statements)

References 50 publications

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“…A detail look at cross‐section images in Fig. reveals that utilizing magnetic external field aligned and dispersed the NPs much better compare to membrane without magnetic field …”

Section: Resultsmentioning

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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“…A detail look at cross‐section images in Fig. reveals that utilizing magnetic external field aligned and dispersed the NPs much better compare to membrane without magnetic field …”

Section: Resultsmentioning

confidence: 99%

“…Numerous inorganic NPs have been used to prepare MMMs for gas separation. For instance, porous inorganic fillers, like a molecular sieve mechanism, separate gases based on size and shape . The resulting membranes display greater selectivity and permeability for the preferred gases.…”

Section: Introductionmentioning

confidence: 99%

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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“…These phenomena indicate that the addition of inorganic nanofillers can effectively reduce the crystallinity of polymer, which was helpful for the gas permeation. In addition, the crystallization property can also be qualitatively investigated by the DSC testing . The melt enthalpy of crystal region, which represented the crystallinity of polymer, was obtained from the integral of crystal endothermic area and listed in Table .…”

Section: Resultsmentioning

confidence: 99%

“…It can also be found that the improvement of CO 2 permeance and CO 2 /N 2 selectivity followed the order: MWCNT‐NH 2 > MWCNT‐OH > MWCNT, which means that the attached groups on the MWCNT played a significant role toward the enhancement of the CO 2 gas permeation. Zhao et al . prepared Pebax/CNTs (MWNTs, MWNTs‐OH, and MWNTs‐NH 2 ) MMMs with solution‐casting method.…”

Section: Resultsmentioning

confidence: 99%

Study on CO₂ facilitated separation of mixed matrix membranes containing surface modified MWCNTs

Zhang

Zhang³

et al. 2019

J of Applied Polymer Sci

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Mixed matrix membranes (MMMs) for CO2‐facilitated separation were prepared by incorporating different surface‐modified multiwalled carbon nanotubes (MWCNTs) in a fixed carrier membrane material. Polymer containing amino groups, poly(vinylalcohol‐co‐vinylamine) (VA‐co‐VAm) was synthesized as polymeric matrix. MWCNTs as well as MWCNTs surface‐modified with OH and NH2 were applied as nanofillers. The physical property, chemical structure, and membrane morphology were characterized by FT‐IR, TG, XRD, DSC, CA, XPS, and SEM. The effects of content, functional group, temperature, and pressure on gas permselectivity were studied. Results show that the incorporation of nanofillers can effectively restrict the polymer chain packing and lead to low crystallinity. The MMMs exhibited higher CO2 permselectivity than the pure polymeric membrane. For all the MMMs, the CO2 permeance and selectivity increased with MWCNTs contents to a maximum and then decreased. MWCNT‐NH2 can be regarded as the most effective nanofiller. MMMs with 2.0 wt % MWCNT‐NH2 displayed the highest CO2 permeance of 132 GPU and CO2/N2 selectivity of 74. Both CO2 permeance and selectivity were decreased with feed gas pressure and temperature. The membrane exhibited good stability in the testing with the binary gas mixtures of CO2/N2 for 110 h under 0.54 MPa. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47848.

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“…For MMMs, there are a variety of options for inorganic fillers, such as carbon nanotubes (CNTs), 6–8,15–17 zeolites, 18,19 silicas, 20,21 and metal‐organic frameworks, 22 which have been studied and shown good separation performance. Recently, several elaborate overviews of the current status and future challenge of MMMs on carbon capture were reported, where the advanced materials used in MMMs were discussed in detail 23–26 .…”

Section: Introductionmentioning

confidence: 99%

Pebax/MWCNTs‐NH₂ mixed matrix membranes for enhanced CO₂/N₂ separation

et al. 2020

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High CO2 separation performance of Pebax®/CNTs/GTA mixed matrix membranes

Cited by 134 publications

References 50 publications

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

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

Study on CO₂ facilitated separation of mixed matrix membranes containing surface modified MWCNTs

Pebax/MWCNTs‐NH₂ mixed matrix membranes for enhanced CO₂/N₂ separation

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High CO2 separation performance of Pebax®/CNTs/GTA mixed matrix membranes

Cited by 134 publications

References 50 publications

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

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

Study on CO2 facilitated separation of mixed matrix membranes containing surface modified MWCNTs

Pebax/MWCNTs‐NH2 mixed matrix membranes for enhanced CO2/N2 separation

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Product

Resources

About

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

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

Study on CO₂ facilitated separation of mixed matrix membranes containing surface modified MWCNTs

Pebax/MWCNTs‐NH₂ mixed matrix membranes for enhanced CO₂/N₂ separation