An antioxidative composite membrane with the carboxylate group as a fixed carrier for CO2 separation from flue gas

Wang, Mingming; Wang, Zhi; Wang, Jixiao; Zhu, Yuxuan; Wang, Shichang

doi:10.1039/c1ee01908b

Cited by 51 publications

(37 citation statements)

References 39 publications

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“…It demonstrates that the wellcrystallized HT has been synthesised in this paper. 55 Though the performance declines at the high pressure due to the carrier approaching saturation, 10,13,14 the CO 2 permeance and CO 2 /N 2 The results indicate that establishing HT channels in the membrane can supply a highly efficient way to concurrently enhance the permeance and selectivity of the membrane. 4(b).…”

Section: Resultsmentioning

confidence: 97%

A high performance PVAm–HT membrane containing high-speed facilitated transport channels for CO₂separation

et al. 2015

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A PVAm-HT membrane is fabricated by establishing a hydrotalcite (HT) channel in a polyvinylamine (PVAm) fixed carrier membrane. The flexible PVAm fixed carrier membrane material as a matrix membrane is beneficial to get high permeance. Simultaneously, the HT channels can be used as high-speed facilitated transport channels, in which the movable carbonate can actively meet CO 2 and help to increase the CO 2 /N 2 selectivity of membranes as in liquid membranes or in ion exchange membranes. Moreover, the unobstructed HT channels are conducive to transport CO 2 rapidly and they can increase the chain spacing of polymers; these are beneficial to further enhance the permeance of membranes. In addition, the charged layers of HT provide necessary stability for movable carriers due to the electrostatic attraction. Thus, the PVAm-HT membrane obtains high permeance and high selectivity, as well as good stability. The CO 2 permeance of the PVAm-HT membrane reaches 3187 GPU and the CO 2 /N 2 selectivity of the PVAm-HT membrane reaches 296 at 0.11 MPa.Scheme 1 Schematic of CO 2 transport mechanisms in different membranes, (a) Na 2 CO 3 liquid membrane; (b) ion-exchange membrane; (c) fixed carrier membrane; (d) fixed carrier membrane containing high-speed facilitated transport channels.This journal is

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Section: Resultsmentioning

confidence: 97%

A high performance PVAm–HT membrane containing high-speed facilitated transport channels for CO₂separation

et al. 2015

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“…The bands at 839 and 963 cm -1 were assigned to the characteristic absorption bands of HCO 3 -produced by CO 2 , amine groups and water, and the sharp band at 2346 cm -1 was attributed to the complexes of RHNCOO − or R 2 NCOO − . 45,46 In summary, the water binding with the amide groups from PEI@MIL-101(Cr) facilitated the hydration of CO 2 and the generation of HCO 3 -which was able to permeate through the MMMs with much lower energy barrier. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 …”

Section: Characterization Of Membranesmentioning

confidence: 96%

“…If a gas permeates through the membrane following the ideal solution-diffusion mechanism, its permeability is independent of concentration driving force across the membrane. 46 Page 26 of 43 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 (e) Mixed gas N 2 permeability; (f) Mixed gas CO 2 /N 2 selectivity of membranes.…”

Section: The Effect Of Operating Pressurementioning

confidence: 98%

Enhanced Interfacial Interaction and CO₂ Separation Performance of Mixed Matrix Membrane by Incorporating Polyethylenimine-Decorated Metal–Organic Frameworks

Xin

Ouyang²,

Li³

et al. 2015

ACS Appl. Mater. Interfaces

168

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Polyethylenimine (PEI) was immobilized by MIL-101(Cr) (∼550 nm) via a facile vacuum-assisted method, and the obtained PEI@MIL-101(Cr) was then incorporated into sulfonated poly(ether ether ketone) (SPEEK) to fabricate mixed matrix membranes (MMMs). High loading and uniform dispersion of PEI in MIL-101(Cr) were achieved as demonstrated by ICP, FT-IR, XPS, and EDS-mapping. The PEI both in the pore channels and on the surface of MIL-101(Cr) improved the filler-polymer interface compatibility due to the electrostatic interaction and hydrogen bond between sulfonic acid group and PEI, and simultaneously rendered abundant amine carriers to facilitate the transport of CO2 through reversible reaction. MMMs were evaluated in terms of gas separation performance, thermal stability, and mechanical property. The as-prepared SPEEK/PEI@MIL-101(Cr) MMMs showed increased gas permeability and selectivity, and the highest ideal selectivities for CO2/CH4 and CO2/N2 were 71.8 and 80.0 (at a CO2 permeability of 2490 Barrer), respectively. Compared with the membranes doped with unfilled MIL-101(Cr), the ideal selectivities of CO2/CH4 and CO2/N2 for PEI@MIL-101(Cr)-doped membranes were increased by 128.1 and 102.4 %, respectively, at 40 wt % filler loading, surpassing the 2008 Robeson upper bound line. Moreover, the mechanical property and thermal stability of SPEEK/PEI@MIL-101(Cr) were enhanced.

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“…Solubility coefficient is related to both chemical composites and physical structures of membranes. On one hand, the hydroxyl groups on CNTs and the hydroxyl and carboxyl groups on GO nanosheets had a stronger interaction with CO 2 than other gases, which can increase the solubility of polar gas and limit the solubility of non-polar gas, thus increasing the CO 2 /gas selectivity [56,57]. On the other hand, the homogeneous dispersion of CNTs and GO nanofillers in the polymer matrix increased the interaction sites, including polymer and fillers, and functional groups and CO 2 molecules.…”

Section: Diffusivity and Solubility Of Pure Matrimid S Membrane And Mmmsmentioning

confidence: 99%

Synergistic effect of combining carbon nanotubes and graphene oxide in mixed matrix membranes for efficient CO2 separation

Zhang

et al. 2015

Journal of Membrane Science

229

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An antioxidative composite membrane with the carboxylate group as a fixed carrier for CO2 separation from flue gas

Cited by 51 publications

References 39 publications

A high performance PVAm–HT membrane containing high-speed facilitated transport channels for CO₂separation

A high performance PVAm–HT membrane containing high-speed facilitated transport channels for CO₂separation

Enhanced Interfacial Interaction and CO₂ Separation Performance of Mixed Matrix Membrane by Incorporating Polyethylenimine-Decorated Metal–Organic Frameworks

Synergistic effect of combining carbon nanotubes and graphene oxide in mixed matrix membranes for efficient CO2 separation

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An antioxidative composite membrane with the carboxylate group as a fixed carrier for CO2 separation from flue gas

Cited by 51 publications

References 39 publications

A high performance PVAm–HT membrane containing high-speed facilitated transport channels for CO2separation

A high performance PVAm–HT membrane containing high-speed facilitated transport channels for CO2separation

Enhanced Interfacial Interaction and CO2 Separation Performance of Mixed Matrix Membrane by Incorporating Polyethylenimine-Decorated Metal–Organic Frameworks

Synergistic effect of combining carbon nanotubes and graphene oxide in mixed matrix membranes for efficient CO2 separation

Contact Info

Product

Resources

About

A high performance PVAm–HT membrane containing high-speed facilitated transport channels for CO₂separation

A high performance PVAm–HT membrane containing high-speed facilitated transport channels for CO₂separation

Enhanced Interfacial Interaction and CO₂ Separation Performance of Mixed Matrix Membrane by Incorporating Polyethylenimine-Decorated Metal–Organic Frameworks