Incorporation of benzimidazole linked polymers into Matrimid to yield mixed matrix membranes with enhanced CO2/N2 selectivity

Tessema, Tsemre Dingel Mesfin; Venna, Surendar R.; Dahe, Ganpat J.; Hopkinson, David; El‐Kaderi, Hani M.; Sekizkardes, Ali K.

doi:10.1016/j.memsci.2018.02.054

Cited by 22 publications

(20 citation statements)

References 28 publications

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“…Sekizkardes et al. in this context synthesized benzimidazole‐based POP material BILP‐1 through the extensive polycondensation reaction between a tetra amine 1,2,4,5‐(benzenetetramine) tetrahydrochloride and a trialdehyde 1,3,5‐triformylbenzene . BILP‐1 displayed ultra small micropore of size 0.54 nm with high physicochemical stability of the organic framework.…”

Section: Synthesis Of Different Organic Frameworkmentioning

confidence: 99%

Porous Organic Polymers for CO₂ Storage and Conversion Reactions

2018

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To overcome the challenges of global warming and environmental pollution it is mandatory to reduce the concentration of atmospheric carbon dioxide (CO2), which is largely accumulated in air through the combustion of fossil fuels. Thus, sequestration of CO2 through physisorption on solid adsorbents and their successful conversion into value added fine chemicals are the major priority areas of research today. Innovation of efficient solid CO2‐philic adsorbents together with their high mechanical/chemical stability and regeneration efficiency are the most challenging objectives to achieve this goal. In this context, porous organic polymers (POPs) owing to their high specific surface area, chemical stability, nanoscale porosity and structural diversity have huge potential to play as selective CO2 adsorbent. POPs synthesized through large varieties of reactive monomers via simple and convenient chemical routes can be the ideal adsorbents for the CO2 storage and fixation reactions. A wide range of POPs can be synthesized from different multidentate amines, aldehydes, carboxylic acids or triazine monomers through the polycondensation reactions or solid state condensation reactions. Ease of synthesis, uniform pore width together with high surface area and surface basic sites (nitrogen and other heteroelements) play crucial role in the CO2 absorption and conversion reactions. This review provides a concise account in designing POPs and their application in CO2 adsorption and fixation into reactive organic molecules for the synthesis of fuels and value added fine chemicals.

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Section: Synthesis Of Different Organic Frameworkmentioning

confidence: 99%

Porous Organic Polymers for CO₂ Storage and Conversion Reactions

2018

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“…SEM micrographs of the surface (Fig. S5) [ 20,46] To check whether the BILP pores are still available in the MMMs. CO2 adsorption isotherms were acquired at 273 K for both bare Matrimid® and the prepared MMMs.…”

Section: Characterization Of Bilps Mmmsmentioning

confidence: 99%

“…Porous organic frameworks (POFs) [13], such as covalent organic frameworks (COFs) [14,15], conjugated microporous polymers (CMPs) [16], porous aromatic frameworks (PAFs) [17] and covalent triazine-based frameworks (CTFs) [18], are a relatively new category of porous materials constructed from covalent bonds. Given their diversified porosities, tunable chemical properties, inherent light weight and exceptional chemical and thermal stabilities, POFs are promising candidates to be used as fillers in MMMs for CO2 separation [19,20]. For example, Jin et al [21] studied the effect of dispersing COF nanosheets in polyether-blockamide (PEBA) and prepared PEBA-based MMMs, which show 56 % improvement in ideal selectivity towards CO2/N2 compared to the pure PEBA membrane with only 1 wt.% COF loading.…”

Section: Introductionmentioning

confidence: 99%

Benzimidazole linked polymers (BILPs) in mixed-matrix membranes: Influence of filler porosity on the CO2/N2 separation performance

Shan

Seoane

Pustovarenko

et al. 2018

Journal of Membrane Science

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The performance of mixed-matrix membranes (MMMs) based on Matrimid® and benzimidazole-linked polymers (BILPs) have been investigated for the separation CO2/N2 and the dependency on the filler porosity. BILPs with two different porosities (BILP-101 and RT-BILP-101) were synthesized through controlling the initial polymerization rate and further characterized by several techniques (DRIFTs, 13 C CP/MAS NMR, SEM, TEM, N2 and CO2 adsorption). To investigate the influence of porosity, the two types of fillers were incorporated into Matrimid® to prepare MMMs at varied loadings (8, 16 and 24 wt.%). SEM confirmed the well dispersion of BILP-101 and RT-BILP-101 indicating their good compatibility with polymer matrix. The partial pore blockage in the membrane was verified by CO2 adsorption isotherms on the prepared membranes. In the separation of CO2 from a 15:85 CO2:N2 mixture at 308 K, the incorporation of both BILPs fillers resulted in an enhancement in gas permeability together with constant selectivity owing to the fast transport pathways introduced by the porous network. It was noteworthy that the initial porosity of the filler had a large impact in separation permeability. The best improvement was achieved by 24 wt.% RT-BILP-101 MMMs, for which the CO2 permeability increases up to 2.8-fold (from 9.6 to 27 Barrer) compared to the bare Matrimid®.

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“…Nanofibers are nanostructures with stable physicochemical properties such as large surface area and good internal pore connectivity, which leads to effective contact of pollutant gas molecules with highly assessable adsorption sites . Because of their desirable properties, these nanostructures are used for different applications, including environmental processes…”

Section: Introductionmentioning

confidence: 99%

A novel composite derived from a metal organic framework immobilized within electrospun nanofibrous polymers: An efficient methane adsorbent

Sargazi¹,

Afzali

Mostafavi

et al. 2020

Applied Organom Chemis

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In this study, tantalum(V) metal organic framework (Ta‐MOF) nanostructure was incorporated within polyvinyl alcohol (PVA) nanofibers to prepare an electrospun porous composite as a novel CH4 adsorbent. The crystallinity, thermodynamic behavior, and textural properties of the products were investigated using instrumental analyses techniques. The results confirmed that the developed PVA/Ta‐MOF electrospun nanofibrous composite exhibits higher thermal stability, considerable porosity, and larger surface area compared to the parent Ta‐MOF. A 2k factorial design was used for systematic study of the adsorption process. The results of response surface methodology (RSM) optimization indicated that the highest methane adsorption can be achieved at 24.40 °C and 3.70 bar in 23.60 min. These nano pore sorbents showed a significant potential for CH4 adsorption due to the presence of Ta‐MOF at the surface of nanofibrous composite compared to many other conventional sorbents that have been already used. This study introduces a novel biocompatible/biodegradable nanofibrous composite material with high methane adsorption performance and potentials for other applications.

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Incorporation of benzimidazole linked polymers into Matrimid to yield mixed matrix membranes with enhanced CO2/N2 selectivity

Cited by 22 publications

References 28 publications

Porous Organic Polymers for CO₂ Storage and Conversion Reactions

Porous Organic Polymers for CO₂ Storage and Conversion Reactions

Benzimidazole linked polymers (BILPs) in mixed-matrix membranes: Influence of filler porosity on the CO2/N2 separation performance

A novel composite derived from a metal organic framework immobilized within electrospun nanofibrous polymers: An efficient methane adsorbent

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Incorporation of benzimidazole linked polymers into Matrimid to yield mixed matrix membranes with enhanced CO2/N2 selectivity

Cited by 22 publications

References 28 publications

Porous Organic Polymers for CO2 Storage and Conversion Reactions

Porous Organic Polymers for CO2 Storage and Conversion Reactions

Benzimidazole linked polymers (BILPs) in mixed-matrix membranes: Influence of filler porosity on the CO2/N2 separation performance

A novel composite derived from a metal organic framework immobilized within electrospun nanofibrous polymers: An efficient methane adsorbent

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Porous Organic Polymers for CO₂ Storage and Conversion Reactions

Porous Organic Polymers for CO₂ Storage and Conversion Reactions