Development of high performance amine functionalized zeolitic imidazolate framework ( ZIF ‐8)/cellulose triacetate mixed matrix membranes for CO 2 / CH 4 separation

2020 ◽  
Vol 44 (10) ◽  
pp. 7989-7999 ◽  
Author(s):  
Ayesha Raza ◽  
Sarah Farrukh ◽  
Arshad Hussain ◽  
Imran Ullah Khan ◽  
Tayyaba Noor ◽  
...  
Keyword(s):  
High Performance ◽  
Cellulose Triacetate ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Zeolitic Imidazolate Framework ◽  
Amine Functionalized ◽  
Matrix Membranes

scholarly journals Optimization of a MOF Blended with Modified Polyimide Membrane for High-Performance Gas Separation

Membranes ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 34
Author(s):  
Yushu Zhang ◽  
Hongge Jia ◽  
Qingji Wang ◽  
Wenqiang Ma ◽  
Guoxing Yang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Gas Separation ◽  
High Performance ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Polyimide Membrane ◽  
Amine Functionalized ◽  
Ideal Selectivity ◽  
Metal Organic ◽  
Matrix Membranes

The preparation, characterization and gas separation properties of mixed matrix membranes (MMMs) were obtained from polyimide capped with ionic liquid and blended with metal-organic frameworks (MOFs). The synthesized MOF was amine functionalized to produce UiO-66-NH2, and its amino group has a higher affinity for CO2. Mixed matrix membranes exhibited good membrane forming ability, heat resistance and mechanical properties. The polyimide membrane exclusively capped by ionic liquid exhibited good permselectivity of 74.1 for CO2/CH4, which was 6.2 times that of the pure polyimide membrane. It is worth noting that MMM blended with UiO-66-NH2 demonstrated the highest ideal selectivity for CO2/CH4 (95.1) with a CO2 permeability of 7.61 Barrer, which is close to the 2008 Robeson upper bound. The addition of UiO-66-NH2 and ionic liquid enhanced the permselectivity of MMMs, which may be one of the promising technologies for high performance CO2/CH4 gas separation.

Effect of new metal–organic framework (zeolitic imidazolate framework [ZIF-12]) in mixed matrix membranes on structure, morphology, and gas separation properties

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mehtap Safak Boroglu ◽  
Ismail Boz ◽  
Busra Kaya
Keyword(s):  
Gas Separation ◽  
Gas Permeability ◽  
Metal Organic Framework ◽  
Thermomechanical Analysis ◽  
Variable Pressure ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Sem Images ◽  
Zeolitic Imidazolate Framework ◽  
Matrix Membranes

Abstract In our study, the synthesis of zeolitic imidazolate framework (ZIF-12) crystals and the preparation of mixed matrix membranes (MMMs) with various ZIF-12 loadings were targeted. The characterization of ZIF-12 and MMMs were carried out by Fourier transform infrared spectroscopy analysis, thermogravimetric analysis, scanning electron microscopy (SEM), and thermomechanical analysis. The performance of MMMs was measured by the ability of binary gas separation. Commercial polyetherimide (PEI-Ultem® 1000) polymer was used as the polymer matrix. The solution casting method was utilized to obtain dense MMMs. In the SEM images of ZIF-12 particles, the particles with a rhombic dodecahedron structure were identified. From SEM images, it was observed that the distribution of ZIF-12 particles in the MMMs was homogeneous and no agglomeration was present. Gas permeability experiments of MMMs were measured for H2, CO2, and CH4 gases at steady state, at 4 bar and 35 °C by constant volume-variable pressure method. PEI/ZIF-12-30 wt% MMM exhibited high permeability and ideal selectivity values for H2/CH4 and CO2/CH4 were P H 2 / CH 4 = 331.41 ${P}_{{\text{H}}_{2}/{\text{CH}}_{4}}=331.41$ and P CO 2 / CH 4 = 53.75 ${P}_{{\text{CO}}_{2}/{\text{CH}}_{4}}=53.75$ gas pair.

scholarly journals CO2 Selective, Zeolitic Imidazolate Framework-7 Based Polymer Composite Mixed-Matrix Membranes

2018 ◽  
Vol 7 (3) ◽  
pp. 1 ◽  
Author(s):  
Tina Chakrabarty ◽  
Pradeep Neelakanda ◽  
Klaus-Viktor Peinemann
Keyword(s):  
Metal Organic Framework ◽  
Time Lag ◽  
Morphological Characterization ◽  
Mixed Matrix Membranes ◽  
Co2 Removal ◽  
Hybrid Membranes ◽  
Mixed Matrix ◽  
Zeolitic Imidazolate Framework ◽  
Custom Made ◽  
Matrix Membranes

CO2 removal is necessary to mitigate the effects of global warming but it is a challenging process to separate CO2 from natural gas, biogas, and other gas streams. Development of hybrid membranes by use of polymers and metal-organic framework (MOF) particles is a viable option to overcome this challenge. A ZIF-7 nano-filler that was synthesized in our lab was embedded into a designed polymer matrix at various loadings and the performance of the mixed matrix membranes was evaluated in terms of gas permeance and selectivity. Hybrid membranes with various loadings (20, 30 and 40 wt%) were developed and tested at room temperature by a custom made time lag equipment and a jump in selectivity was observed when compared with the pristine polymer. A commercially attractive region for the selectivity CO2 over CH4 was achieved with a selectivity of 39 for 40 wt% particle loading. An increase in selectivity was observed with the increase of ZIF-7 loadings. Best performance was seen at 40% ZIF-7 loaded membrane with an ideal selectivity of 39 for CO2 over CH4. The obtained selectivity was 105% higher for CO2 over CH4 than the selectivity of the pristine polymer with a slight decrease in permeance. Morphological characterization of such developed membranes showed an excellent compatibility between the polymer and particle adhesion.

scholarly journals Mixed-Matrix Membranes Comprising of Polysulfone and Porous UiO-66, Zeolite 4A, and Their Combination: Preparation, Removal of Humic Acid, and Antifouling Properties

Membranes ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 393
Author(s):  
Tanzila Anjum ◽  
Rahma Tamime ◽  
Asim Laeeq Khan
Keyword(s):  
Humic Acid ◽  
High Performance ◽  
Synergistic Effects ◽  
Pure Water ◽  
Water Flux ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Zeolite 4A ◽  
Pure Water Flux ◽  
Matrix Membranes

High-performance Mixed-Matrix Membranes (MMMs) comprising of two kinds of porous fillers UiO-66 and Zeolite 4Aand their combination were fabricated with polysulfone (PSf) polymer matrix. For the very first time, UiO-66 and Zeolite 4A were jointly used as nanofillers in MMMs with the objective of complimenting synergistic effects. The individual and complimentary effects of nanofillers were investigated on membrane morphology and performance, pure water flux, humic acid rejection, static humic acid adsorption, and antifouling properties of membranes. Scanning Electron Microscopy (SEM) analysis of membranes confirmed that all MMMs possessed wider macrovoids with higher nanofiller loadings than neat PSf membranes and the MMMs (PSf/UiO-66 and PSf/Zeolite 4A-UiO-66) showed tendency of agglomeration with high nanofiller loadings (1 wt% and 2 wt%). All MMMs exhibited better hydrophilicity and lower static humic acid adsorption than neat PSf membranes. Pure water flux of MMMs was higher than neat PSf membranes but the tradeoff between permeability and selectivity was witnessed in the MMMs with single nanofiller. However, MMMs with combined nanofillers (PSf/Zeolite 4A-UiO-66) showed no such tradeoff, and an increase in both permeability and selectivity was achieved. All MMMs with lower nanofiller loadings (0.5 wt% and 1 wt%) showed improved flux recovery. PSf/Zeolite 4A-UiO-66 (0.5 wt%) membranes showed the superior antifouling properties without sacrificing permeability and selectivity.

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

Membranes ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 155 ◽  
Author(s):  
Machiel van Essen ◽  
Esther Montrée ◽  
Menno Houben ◽  
Zandrie Borneman ◽  
Kitty Nijmeijer
Keyword(s):  
Design Parameters ◽  
Mixed Matrix Membranes ◽  
Co2 Uptake ◽  
Mixed Matrix ◽  
Zeolitic Imidazolate Framework ◽  
Weight Content ◽  
The Matrix ◽  
Metal Organic ◽  
Magnetically Aligned ◽  
Matrix Membranes

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.

scholarly journals Towards High Performance Metal-Organic Framework-Microporous Polymer Mixed Matrix Membranes: Addressing Compatibility and Limiting Aging by Polymer Doping

2018 ◽  
Vol 24 (49) ◽  
pp. 12796-12800 ◽  
Author(s):  
Anahid Sabetghadam ◽  
Xinlei Liu ◽  
Angelica F. Orsi ◽  
Magdalena M. Lozinska ◽  
Timothy Johnson ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Organic Framework ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Microporous Polymer ◽  
Metal Organic ◽  
Organic Framework ◽  
Matrix Membranes

scholarly journals Dimensional Nanofillers in Mixed Matrix Membranes for Pervaporation Separations: A Review

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 193
Author(s):  
Guang Yang ◽  
Zongli Xie ◽  
Marlene Cran ◽  
Chunrui Wu ◽  
Stephen Gray
Keyword(s):  
Polymer Matrix ◽  
High Performance ◽  
Three Dimensional ◽  
Liquid Mixtures ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix ◽  
Inorganic Fillers ◽  
High Flexibility ◽  
The Impact ◽  
Matrix Membranes

Pervaporation (PV) has been an intriguing membrane technology for separating liquid mixtures since its commercialization in the 1980s. The design of highly permselective materials used in this respect has made significant improvements in separation properties, such as selectivity, permeability, and long-term stability. Mixed-matrix membranes (MMMs), featuring inorganic fillers dispersed in a polymer matrix to form an organic–inorganic hybrid, have opened up a new avenue to facilely obtain high-performance PV membranes. The combination of inorganic fillers in a polymer matrix endows high flexibility in designing the required separation properties of the membranes, in which various fillers provide specific functions correlated to the separation process. This review discusses recent advances in the use of nanofillers in PV MMMs categorized by dimensions including zero-, one-, two- and three-dimensional nanomaterials. Furthermore, the impact of the nanofillers on the polymer matrix is described to provide in-depth understanding of the structure–performance relationship. Finally, the applications of nanofillers in MMMs for PV separation are summarized.

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