Bipyridine-based UiO-67 as novel filler in mixed-matrix membranes for CO2-selective gas separation

Thür, Raymond; Velthoven, Niels Van; Slootmaekers, Sam; Didden, Jeroen; Verbeke, Rhea; Smolders, Simon; Dickmann, Marcel; Egger, Werner; Vos, Dirk De; Vankelecom, Ivo F.J.

doi:10.1016/j.memsci.2019.01.016

Cited by 80 publications

(31 citation statements)

References 67 publications

(79 reference statements)

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“…The 180 h temperature swing permeations confirmed the stability of ZIF-7 22 -8 membranes in relative aggressive environments [16]. In addition to the pure MOF membrane, another feasible membrane solution for CO 2 capture tends to favor the use of mixed matrix membranes (MMMs) by combining the processability of polymers and the permeable and selective characteristics of MOF fillers, improving the separation benchmark and surpassing Robeson's upper limit of the pristine polymer membranes [17][18][19]. Yang and coworkers quantitatively studied the synergistically adsorptive and diffusive effect of MOF fillers by using a classical solutiondiffusion gas transportation model, indicating that MOF fillers (ZIF-8) performed as a molecular sieving pathway with good adsorption affinity to CO 2 molecules for achieving highly efficient CO 2 /CH 4 separation [20].…”

Section: Co 2 -Selectivementioning

confidence: 73%

Metal-Organic Framework Membranes and Membrane Reactors: Versatile Separations and Intensified Processes

2020

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Metal-organic frameworks are an emerging and fascinating category of porous solids that can be self-assembled with metal-based cations linked by organic molecules. The unique features of MOFs in porosity (or surface areas), together with their diversity for chemical components and architectures, make MOFs attractive candidates in many applications. MOF membranes represent a long-term endeavor to convert MOF crystals in the lab to potentially industry-available commodities, which, as a promising alternative to distillation, provide a bright future for energy-efficient separation technologies closely related with chemicals, the environment, and energy. The membrane reactor shows a typical intensified process strategy by combining the catalytic reaction with the membrane separation in one unit. This review highlights the recent process of MOF-based membranes and the importance of MOF-based membrane reactors in relative intensified chemical processes.

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Section: Co 2 -Selectivementioning

confidence: 73%

Metal-Organic Framework Membranes and Membrane Reactors: Versatile Separations and Intensified Processes

2020

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“…Despite these advantages, polymeric membranes exhibit a negative correlation between selectivity and permeability, which is known as Robeson’s upper bound [ 2 , 3 ]. The incorporation of additives in polymeric membranes, i.e., a mixed matrix membrane (MMM), can result in shifting the membrane performance towards this upper bound or even surpassing it [ 4 , 5 , 6 , 7 ]. Additives that are used to enhance the MMM separation performance and have gained significant attention over the past decades are metal-organic frameworks (MOFs) [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…MMMs consisting of a polymeric matrix with MOF additives provide a wide field of research, where the MMM can be optimized in various manners, since there are many parameters to tune. Firstly, by introducing CO 2 -philic linkers in MOFs, the separation of CO 2 /CH 4 by MMMs can be significantly improved [ 5 ]. Interfacial compatibility between the matrix and the MOF can be optimized by matrix modification or the addition of a dispersant, where the improved MOF embedding results in increased CO 2 /CH 4 selectivity [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetically Aligned and Enriched Pathways of Zeolitic Imidazolate Framework 8 in Matrimid Mixed Matrix Membranes for Enhanced CO2 Permeability

et al. 2020

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Metal-organic frameworks (MOFs) as additives in mixed matrix membranes (MMMs) for gas separation have gained significant attention over the past decades. Many design parameters have been investigated for MOF based MMMs, but the spatial distribution of the MOF throughout MMMs lacks investigation. Therefore, magnetically aligned and enriched pathways of zeolitic imidazolate framework 8 (ZIF−8) in Matrimid MMMs were synthesized and investigated by means of their N2 and CO2 permeability. Magnetic ZIF−8 (m–ZIF−8) was synthesized by incorporating Fe3O4 in the ZIF−8 structure. The presence of Fe3O4 in m–ZIF−8 showed a decrease in surface area and N2 and CO2 uptake, with respect to pure ZIF−8. Alignment of m–ZIF−8 in Matrimid showed the presence of enriched pathways of m–ZIF−8 through the MMMs. At 10 wt.% m–ZIF−8 incorporation, no effect of alignment was observed for the N2 and CO2 permeability, which was ascribed anon-ideal tortuous alignment. However, alignment of 20 wt.% m–ZIF−8 in Matrimid showed to increase the CO2 diffusivity and permeability (19%) at 7 bar, while no loss in ideal selectivity was observed, with respect to homogeneously dispersed m–ZIF−8 membranes. Thus, the alignment of MOF particles throughout the matrix was shown to enhance the CO2 permeability at a certain weight content of MOF.

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“…Alloyed membranes and mixed‐matrix membranes (MMMs) with improved morphology and physiochemical properties have allowed achieving separation performances closed to or above the upper bounds . In particular, MMMs have also addressed the limitations of inorganic membranes like brittleness and processability .…”

Section: Introductionmentioning

confidence: 99%

Improved gas transport properties of polyurethane–urea membranes through incorporating a cadmium‐based metal organic framework

Sadeghi

Isfahani

Shamsabadi

et al. 2019

J of Applied Polymer Sci

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The increasing need for more efficient separation processes has motivated the development of polymer membranes that can provide fast and selective transport. In this work, cadmium‐based metal–organic framework (MOF) nanoparticles and a polyurethane–urea (PUU) elastomer were synthesized. New mixed‐matrix membranes (MMMs) were then fabricated from the nanoparticles and the PUU. SEM images verified that embedding the nanoparticles changes the morphology of the PUU and the nanoparticles disperse well in the PUU due to satisfactory compatibility of the polymer and nanoparticles. Fourier transform infrared spectroscopy and X‐ray diffraction analysis confirmed the dispersion of the nanoparticles in the soft segment of the PUU. With increased temperature, gas permeabilities of the MMMs improved but their sieving ability deteriorated. An MMM incorporating 2.5 wt % of the MOF showed a CO2 permeability of ~140 barrer and a CO2/N2 selectivity of ~30, which are 89 and 38% higher than those of the pristine membrane. Gas permeation tests showed that the higher CO2/N2 selectivity of the MMMs was due to improved solubility selectivity and the higher CO2 permeability was a result of improved CO2 diffusivity and solubility coefficients. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48704.

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Bipyridine-based UiO-67 as novel filler in mixed-matrix membranes for CO2-selective gas separation

Cited by 80 publications

References 67 publications

Metal-Organic Framework Membranes and Membrane Reactors: Versatile Separations and Intensified Processes

Metal-Organic Framework Membranes and Membrane Reactors: Versatile Separations and Intensified Processes

Magnetically Aligned and Enriched Pathways of Zeolitic Imidazolate Framework 8 in Matrimid Mixed Matrix Membranes for Enhanced CO2 Permeability

Improved gas transport properties of polyurethane–urea membranes through incorporating a cadmium‐based metal organic framework

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