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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"mixed matrix membranes"”.
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Graphene based mixed matrix membranes for CO2 separation
L'abstract è presente nell'allegato / the abstract is in the attachment
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Polymer Aluminophosphate Mixed Matrix Membranes for Gas Separations
… is well known that clays dispersed in a polymer matrix decrease the permeability of all gases through that membrane. Our objective was to explore the effects on transport when a microporous layered aluminophosphate was added to a polymer matrix. The clay like layered aluminophosphate used …
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High Permeability/High Diffusivity Mixed Matrix Membranes For Gas Separations
… feasibility and cost. However, polymeric membranes designed for gas separations have been known to have a trade-off between permeability and selectivity as shown in Robeson's upper bound curves. The search for membrane materials that transcend Robeson's upper bound has been the critical …
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ADVANCED POROUS MATERIALS IN MIXED MATRIX MEMBRANES FOR CARBON DIOXIDE CAPTURE
… separation) and flue gas (CO2/N2 separation). Mixed matrix membranes (MMMs) offer new opportunities to achieve breakthroughs in fabricating high-performance membranes for CO2 capture. In this thesis, several advanced porous materials, including two dimensional metal-organic framework (MOF) …
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Polymer-Metal–Organic Framework (MOF) Mixed-Matrix Membranes for Gas Separation Applications
… interest for membrane-based gas separations. Mixed-matrix membranes (MMMs) formed by incorporating MOF particles into polymers have attracted significant attention because these composite systems can potentially surpass the separation performance of pure polymers alone. However, performance …
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Fabrication and Characterization of Polyimide-based Mixed Matrix Membranes for Gas Separations
A series of mixed matrix membranes based on zeolites incorporated into fluorinated polyimides were fabricated and characterized in this study. The first system consisted of a polyimide (6FDA-6FpDA-DABA) with carboxylic acid groups incorporated into its backbone and amine-functionalized zeolite …
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ZSM-5/thermoplastic polyurethane mixed matrix membranes for pervaporation of dilute aqueous organic solvents
… ZSM-5/thermoplastic polyurethane (TPU) mixed matrix membranes (MMMs) for efficient pervaporation of n-butanol and ethanol from dilute aqueous solutions as a cheap and easy to fabricate replacement for the benchmark polydimethylsiloxane (PDMS) membranes. Binary systems of n-butanol-water …
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Development of Novel High Temperature Mixed Matrix Membranes (MMMs) for Oil Sands Wastewater Treatment
… facile operation, installation and scaleup. Mixed matrix membranes (MMMs) prepared by mixing super-hydrophilic zwitterionic materials and inorganic nanoparticles into the host membrane are anticipated as a next membrane generation for OSPW treatment by achieving multi-functionalities beyond …
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Cross-Flow Filtration with Mixed Matrix Membranes for the Removal of Proteins from White Wines
… fining process via the use of bentonite-embedded mixed matrix membranes (MMM) in cross-flow filtration systems. This process aims to reduce the processing time and reduce or eliminate the generation of bentonite lees. While protein adsorber membranes made using the wet phase inversion technique …
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Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process
… nanoparticles (bio-AgNPs) structure towards PSf membranes performance. The addition of bio-AgNPs in the membrane formulation was aimed to improve antibacterial properties and interface compatibility of the polymer mixed matric membrane. In this work, facile green synthesis method of silver …
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Carbon Dioxide Gas Separation from Syngas to Increase Conversion of Reverse Water Gas Shift Reaction via Polymeric and Mixed Matrix Membranes
Membranes are a promising, effective and energy efficient separation strategy for effluent gases in the Reverse Water Gas Shift (RWGS) reaction to increase the overall conversion of CO2 to CO. This process involves a separation and recycling process to reuse the unreacted CO2 from the RWGS reactor. …
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ORMOCER (inorganic-organic hybrid polymer)-zeolite Nanocomposites: Advanced Membrane Materials for Gas Separation
… resins for the fabrication of free-standing mixed matrix membranes. Such mixed matrix membranes comprise molecular sieve entities integrated in ORMOCER® matrix. Mixed matrix membranes have the potential to combine the processability of ORMOCER® materials with the superior transport and ion …
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Engineering nanoporous materials for application in gas separation membranes
… surfaces for applications in gas separation membranes. Tunable methods have been developed to create inorganic hydroxide nanostructures on zeolite surfaces, and used to control the inorganic/polymer interfacial morphology in zeolite/polymer composite membranes. The study of the …
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Löslichkeitsselektive Mixed Matrix Membranen zur Gaspermeation
In this work solubility selective mixed matrix membranes consisting of silicon polymers and activated carbon are investigated for transport and separation properties of n-butane and methane. For mathematical description of the permeation process a new model is developed based on one-dimensional …
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MEMBRANE DEVELOPMENT FOR ORGANIC SOLVENT NANOFILTRATION APPLICATION
… of polyimide (PI) and polybenzimidazole (PBI) membranes to obtain membranes with enhanced chemical, mechanical and thermal stability, improved permeance and selectivity, and great long-term performance for various applications. High-flux mixed matrix membranes (MMMs) for OSN were designed in …
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Desenvolvimento de membranas de matriz mista para separação de O2/N2
… alternatives to reduce O2 production cost are membranes for gas separation. But, to compete with conventional separation technologies, the development of new materials have been investigated such as mixed matrix membranes (MMM). In this context, the objectives of this work are the development …
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Assemblies of Metal-Organic Polyhedra: Synthesis, Properties and Characterization
… of the Janus MOP was studied thoroughly. Lastly, mixed matrix membranes (MMM) using ampMOP and PEBAX polymer were created for usage in CO2/N2 gas separations. Overall, the thesis provides a reference for exploiting novel properties of MOPs.
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Microporous Polymer-Metal Organic Framework (MOF) Hybrid Materials for Separations
… improvements over conventional polymers. Mixed-matrix membranes (MMMs) have emerged as a potent strategy, combining the processability of polymers with the superior separation properties of MOFs to create high-performance membranes. Additionally, the integration of MOFs into polymers can …
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Integration of Metal-Organic Frameworks with Electrospun Fibers for Heavy Metal Removal and Carbon Dioxide Capture
… and scalable technique for producing nanofibrous membranes with high surface-to-volume ratio, offers a promising strategy to immobilize MOFs in structured and processable forms. This thesis investigates the integration of MOFs with electrospun polymer fibers to develop multifunctional composites …
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