A Dual-mode model interpretation of CO2/CH4 permeability in polysulfone membranes at low pressures

Biondo, Lucas D.; Duarte, Jocelei; Zeni, Mára; Godinho, Marcelo

doi:10.1590/0001-3765201820170221

Cited by 12 publications

(4 citation statements)

References 37 publications

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“…This is a common behavior of glassy polymers [ 31 , 32 ]. Biondo et al [ 33 ] reported a decrease in CO 2 permeability when the pressure increased for PSF and it was explained that the behavior was typical for a dual-mode model. Figure 10 shows the ideal CO 2 /CH 4 selectivity of the membranes incorporated with different NH 2 KIT-6 loadings.…”

Section: Resultsmentioning

confidence: 99%

Functionalized KIT-6/Polysulfone Mixed Matrix Membranes for Enhanced CO2/CH4 Gas Separation

Chew

Ding

et al. 2020

Polymers

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The development of mixed matrix membranes (MMMs) for effective gas separation has been gaining popularity in recent years. The current study aimed at the fabrication of MMMs incorporated with various loadings (0–4 wt%) of functionalized KIT-6 (NH2KIT-6) [KIT: Korea Advanced Institute of Science and Technology] for enhanced gas permeation and separation performance. NH2KIT-6 was characterized by field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and N2 adsorption–desorption analysis. The fabricated membranes were subjected to FESEM and FTIR analyses. The effect of NH2KIT-6 loading on the CO2 permeability and ideal CO2/CH4 selectivity of the fabricated membranes were investigated in gas permeation and separation studies. The successfulness of (3-Aminopropyl) triethoxysilane (APTES) functionalization on KIT-6 was confirmed by FTIR analysis. As observed from FESEM images, MMMs with no voids in the matrix were successfully fabricated at a low NH2KIT-6 loading of 0 to 2 wt%. The CO2 permeability and ideal CO2/CH4 selectivity increased when NH2KIT-6 loading was increased from 0 to 2 wt%. However, a further increase in NH2KIT-6 loading beyond 2 wt% led to a drop in ideal CO2/CH4 selectivity. In the current study, a significant increase of about 47% in ideal CO2/CH4 selectivity was achieved by incorporating optimum 2 wt% NH2KIT-6 into the MMMs.

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Section: Resultsmentioning

confidence: 99%

Functionalized KIT-6/Polysulfone Mixed Matrix Membranes for Enhanced CO2/CH4 Gas Separation

Chew

Ding

et al. 2020

Polymers

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“…The ideal CO2/N2 selectivity increased due to an increase in the CMBs' affinity toward CO2 via the OH and the amine group's presence. The observation indicates that the mesoporosity of DPC and DPC-NH2 were not blocked by the polymer chains penetration and the high molecular dimensions difference between the CO2 and N2 molecules [44]. The 2 wt% DPC and DPC-NH2 incorporated in the CMBs resulted in about 32% and 33% increments of the ideal CO2/N2 selectivity, respectively.…”

Section: Gas Performance Measurementmentioning

confidence: 91%

Enhanced Gas Separation Prowess Using Functionalized Lignin-Free Lignocellulosic Biomass/Polysulfone Composite Membranes

2021

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Delignified lignocellulosic biomass was functionalized with amine groups. Then, the pretreated lignin-free date pits cellulose and the amine-functionalized-date pits cellulose (0–5 wt%) were incorporated into a polysulfone polymer matrix to fabricate composite membranes. The amine groups give additional hydrogen bonding to those existing from the hydroxyl groups in the date pits cellulose. The approach gives an efficient avenue to enhance the CO2 molecules’ transport pathways through the membrane matrix. The interactions between phases were investigated via Fourier transformed infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), whereas pure gases (CO2 and N2) were used to evaluate the gas separation performances. Additionally, the thermal and mechanical properties of the fabricated composites were tested. The pure polysulfone membrane achieved an optimum separation performance at 4 Bar. The optimum separation performance for the composite membranes is achieved at 2 wt%. About 32% and 33% increments of the ideal CO2/N2 selectivity is achieved for the lignin-free date pits cellulose composite membrane and the amine-functionalized-date pits cellulose composite membrane, respectively.

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“…Polysulfone (PSF) based on the phenyl group [ 10 ], along with polyethersulfone (PES) and aromatic polyimide, are widely used as polymeric materials for gas separation. PSF membranes, in particular, have been selected for their commercial availability, ease of treatment, and superior separation performance [ 11 ][ [12] , [13] ].…”

Section: Introductionmentioning

confidence: 99%

Statistical analysis of CO2/N2 gas separation permeance and selectivity using taguchi method

Abdulabbas,

Mohammed,

Al-Hattab

2024

Heliyon

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A Dual-mode model interpretation of CO2/CH4 permeability in polysulfone membranes at low pressures

Cited by 12 publications

References 37 publications

Functionalized KIT-6/Polysulfone Mixed Matrix Membranes for Enhanced CO2/CH4 Gas Separation

Functionalized KIT-6/Polysulfone Mixed Matrix Membranes for Enhanced CO2/CH4 Gas Separation

Enhanced Gas Separation Prowess Using Functionalized Lignin-Free Lignocellulosic Biomass/Polysulfone Composite Membranes

Statistical analysis of CO2/N2 gas separation permeance and selectivity using taguchi method

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