Polyimide mixed matrix membranes for CO2 separations using carbon–silica nanocomposite fillers

Anjum, Muhammad Waqas; Clippel, Filip de; Didden, Jeroen; Khan, Asim Laeeq; Couck, Sarah; Baron, Gino V.; Denayer, Joeri; Sels, Bert F.; Vankelecom, Ivo F.J.

doi:10.1016/j.memsci.2015.08.006

Cited by 64 publications

(19 citation statements)

References 57 publications

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“…Referring to Table 3, the CO 2 permeability and CO 2 /CH 4 selectivity increase while CH 4 permeability decrease for all the resultant mixed matrix membranes compared to pure 6FDA-durene membrane. This could be due to the introduction of amine-functionalized ZIF-8 fillers which increased the inter-segmental spacing between polymer chain near the fillers [33,63]. In addition, it can be observed that the values of µ CO 2 are positive as shown in Table 3, which agree that the incorporation of amine-functionalized ZIF-8 filler enhanced the gas permeability [24].…”

Section: Gas Permeation Resultssupporting

confidence: 52%

“…Overall, the incorporation of different amine-functionalized ZIF-8 fillers into 6FDA-durene polymer resulted in higher CO 2 permeability and CO 2 /CH 4 selectivity compared to pure 6FDA-durene membrane. This could be due to higher CO 2 solubility and more free volume availability in the membrane after incorporation of fillers [33]. Besides, the functionalization of ZIF-8 filler by APTMS, AAPTMS and AEPTMS also induced better dispersion of fillers and having better affinity for CO 2 mainly due to the present of amine groups.…”

Section: Gas Permeation Resultsmentioning

confidence: 99%

“…This could be because of the presence of AAPTMS on ZIF-8 fillers surface reduced the degree of partial blockage of ZIF-8 fillers by introducing a space between polymer chain and ZIF-8 surface [14]. Besides, the functionalization of ZIF-8 fillers with AAPTMS also contributed to a better dispersion of the fillers in the polymer matrix and provide a better absorption and transportation of gases, resulting better separation performance [33]. Apart from that, the increment of free volume from 0.2009 (M1) to 0.2024 (M2) could also improve the diffusion properties and enhanced the CO 2 permeability.…”

Section: Gas Permeation Resultsmentioning

confidence: 99%

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Tailoring CO2/CH4 Separation Performance of Mixed Matrix Membranes by Using ZIF-8 Particles Functionalized with Different Amine Groups

et al. 2019

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CO2 separation from CH4 by using mixed matrix membranes has received great attention due to its higher separation performance compared to neat polymeric membrane. However, Robeson’s trade-off between permeability and selectivity still remains a major challenge for mixed matrix membrane in CO2/CH4 separation. In this work, we report the preparation, characterization and CO2/CH4 gas separation properties of mixed matrix membranes containing 6FDA-durene polyimide and ZIF-8 particles functionalized with different types of amine groups. The purpose of introducing amino-functional groups into the filler is to improve the interaction between the filler and polymer, thus enhancing the CO2 /CH4 separation properties. ZIF-8 were functionalized with three differents amino-functional group including 3-(Trimethoxysilyl)propylamine (APTMS), N-[3-(Dimethoxymethylsilyl)propyl ethylenediamine (AAPTMS) and N1-(3-Trimethoxysilylpropyl) diethylenetriamine (AEPTMS). The structural and morphology properties of the resultant membranes were characterized by using different analytical tools. Subsequently, the permeability of CO2 and CH4 gases over the resultant membranes were measured. The results showed that the membrane containing 0.5 wt% AAPTMS-functionalized ZIF-8 in 6FDA- durene polymer matrix displayed highest CO2 permeability of 825 Barrer and CO2/CH4 ideal selectivity of 26.2, which successfully lies on Robeson upper bound limit.

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Section: Gas Permeation Resultssupporting

confidence: 52%

Section: Gas Permeation Resultsmentioning

confidence: 99%

Section: Gas Permeation Resultsmentioning

confidence: 99%

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Tailoring CO2/CH4 Separation Performance of Mixed Matrix Membranes by Using ZIF-8 Particles Functionalized with Different Amine Groups

et al. 2019

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“…R. Surya Murali et al, 2014, stated that the addition of inorganic filler such, Zeolite 4A will boost the performance of gas separation of the pure PEBAX 1657 [45]. Increased of filler in the polymeric matrix, the permeability of the gas also will rise significantly but the ideal selectivity can be achieved by manipulating the percentage of the filler itself [46][47][48][49][50]. Vajiheh Nafisi et al, 2014, has working on ZIF-8 (ZeoliticImidazolate Framework-8) filler into PEBAX 2533 matrix which lead to a very weak mechanical properties [43].…”

Section: Methods To Avoid Gelation In Pebax Dope Solutionmentioning

confidence: 99%

Development of PEBAX Based Membrane for Gas Separation: A Review

Sunarti

2015

Int. J. Membrane Sci. Techno.

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Polymer is among the favorite materials used for membrane separation as they are cheap, easily cast, low maintenance cost and commercially easy to get eventhough the material needs to be altered to meet the separation industry specific needs. There are two common issues in membrane preparation which are the produced sheet are too brittle and has no strength to withstand pressure during separation process and the porosity of the sheet sometimes not suitable with the gas kinetic diameter for the separation to occur. PEBAX or Poly ether block amide is the answer for the issues as this elastomer provides good mechanical strength from the hard segment of the crystalline poly amide block while the soft polyether will drive the separation process. This unique material can be casted either by phase inversion of the PEBAX itself with other polymer or by coating them on the other polymer substrate.

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“…The carbon dioxide (CO 2 ) absorption capability of ILs is one of the most studied topics due to the emerging demand for the reduction of CO 2 emissions, which is recognized as a crucial issue [4,5]. Membrane separation techniques using a dense membrane with gas permeability and CO 2 selectivity, have many advantages for establishing a sustainable CO 2 separation system with a low energy cost due to the simple driving force for separation [6,7,8,9,10]. The diffusion of CO 2 is driven only by the partial pressure difference of CO 2 gas across the membrane, and ideally only CO 2 diffuses due to the high CO 2 absorption selectivity of the membrane.…”

Section: Introductionmentioning

confidence: 99%

Role of Cation Structure in CO2 Separation by Ionic Liquid/Sulfonated Polyimide Composite Membrane

et al. 2019

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The development of suitable separation technologies for the separation of carbon dioxide is a pressing technological requirement. The application of ion gel membranes for this purpose continues to stimulate a great deal of research, and in this study we focus on the chemical structure of the ionic liquid component in the ion gel, and its interactions with the sulfonated polyimide polymer. Whilst such membranes are known to give promising carbon dioxide separation properties together with mechanical strength and thin-film-processability, we further elaborate on how changing the cation of the ionic liquid from a typical imidazolium cation to a protic variant effects the physicochemical, thermal, and structural properties of the membranes, and how these changes further influence the carbon dioxide separation properties. We compare and contrast our findings with our earlier study on protic and aprotic ammonium-based ionic liquids, and highlight that for CO2 absorption behavior in the imidazolium systems, the importance of directionality of interactions (ion pairs exhibit a large energy stabilization only for a specific geometrical arrangement of cation and anion, e.g., hydrogen bonding rather than Coulombic interaction) between cation and anion applies not only to the protic system, but also to the nominally aprotic cation. Finally, we demonstrate that the phase separation behavior in the ion gels is an important factor in determining the carbon dioxide separation behavior.

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Polyimide mixed matrix membranes for CO2 separations using carbon–silica nanocomposite fillers

Cited by 64 publications

References 57 publications

Tailoring CO2/CH4 Separation Performance of Mixed Matrix Membranes by Using ZIF-8 Particles Functionalized with Different Amine Groups

Tailoring CO2/CH4 Separation Performance of Mixed Matrix Membranes by Using ZIF-8 Particles Functionalized with Different Amine Groups

Development of PEBAX Based Membrane for Gas Separation: A Review

Role of Cation Structure in CO2 Separation by Ionic Liquid/Sulfonated Polyimide Composite Membrane

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