Global ETD Search
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 40 for “"Metal-Organic Framework (MOF)"”.
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Microporous Polymer-Metal Organic Framework (MOF) Hybrid Materials for Separations
… polymers of intrinsic microporosity (PIMs) and metal-organic frameworks (MOFs), have demonstrated performance improvements over conventional polymers. Mixed-matrix membranes (MMMs) have emerged as a potent strategy, combining the processability of polymers with the superior separation properties …
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Polymer-Metal–Organic Framework (MOF) Mixed-Matrix Membranes for Gas Separation Applications
Metal–organic frameworks (MOFs) represent the largest known class of porous crystalline materials ever synthesized. Their narrow pore windows and nearly unlimited structural and chemical features have made these materials of significant interest for membrane-based gas separations. Mixed-matrix …
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Investigation of the potential catalytic activities of several metal organic framework (MOF) materials
Metal-organic frameworks (MOFs) are promising porous materials due to their high porosities, large apparent surface areas, tunable pore properties and selective uptake of small molecules. Many researches have been focused on developing new MOF structures and exploring their use in gas storage and …
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Development of N-heterocyclic carbene ligands for nanomaterials in aqueous media and expanding the interface of metal-organic framework (MOF) and polymer chemistry via polyMOFs
… coordination chemistry, there are many standard organic ligand designs that are optimized for their ease of synthesis as well as established and favorable properties. Nevertheless, there is still room to add new ligand classes to the toolbox for specific applications. This thesis focuses on …
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Colloidal metal-organic frameworks: synthesis and assembly
… is an exercise in exploring the potential of metal-organic framework (MOF) as building blocks for developing anisotropic colloidal assembly system using morphology variation in general and distinct facet in particular. Our attempt to enrich the field is from two directions: synthetic …
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ADVANCED POROUS MATERIALS IN MIXED MATRIX MEMBRANES FOR CARBON DIOXIDE CAPTURE
… porous materials, including two dimensional metal-organic framework (MOF) nanosheets, MOF@covalent organic framework (COF) hybrid nanoparticles, three dimensional COF nanoparticles, have been explored as potential fillers in MMMs to further enhance the separation performance of pure polymeric …
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FIRST-PRINCIPLES MODELING OF MOF74 FOR GAS SEQUESTRATION AND STORAGE APPLICATIONS
… thesis that is able to address both problems. Metal organic framework (MOF) materials are highly-tunable porous materials with affinities toward small-molecule uptake. In particular, I look to study and improve a particular MOF, i.e. MOF74, as a viable hydrogen storage material and carbon …
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Selective ethylene dimerization by a nickel-exchanged metal-organic framework catalyst
… quick deactivation and poor selectivity. The metal-organic framework (MOF) CPF-5 Mn₅(TBA)₃(HCOO)₃(OH)(H₂O₂)2]]₄·6DMF where TBA = 4-(l H-tetrazol-5-yl)benzoic acid provides an ideal structural template for the development of a heterogeneous catalyst for ethylene dimerization. Ni exchanged CPF-5 …
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Co2 Adsorption On Solid Sorbents
… carbon, modified activated carbon, zeolite, metal-organic framework (MOF) and amine grafted sorbents on silica support. Literature review reveals that amine-grafting process can boost CO2 adsorption on silane sorbent support. The larger surface area of the sorbent support means a greater …
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A CALORIMETRIC STUDY OF LIGHT HYDROCARBON ADSORPTION ON METAL-ORGANIC FRAMEWORKS
The effect of metal-organic framework (MOF) structural modifications on C2 hydrocarbon gas adsorption was studied. Two main MOF structures were modified and tested: UiO-66, which has two types of pores in the structure and can support various functional groups on the organic linker, and MOF-74, …
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Spectroscopic Studies of Small Molecule Adsorption and Oxidation on TiO2-Supported Coinage Metals and Zr6-based Metal-Organic Frameworks
… and molecular-level defects associated with the metal-organic framework (MOF), UiO-66. The adsorption of CO onto heterogeneous surfaces effectively characterizes surfaces because the C-O bond vibrates differently depending on the nature of the surface site. Therefore, CO adsorption was used …
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Assemblies of Metal-Organic Polyhedra: Synthesis, Properties and Characterization
Metal-Organic Polyhedra (MOP) are nanoscale capsule-like supramolecular architectures composed of metal ions and organic linkers. They have well defined cavities depending on the ligand shape and metal-vertex geometry. The thesis concerns MOP composed of 12 copper(II) dimers (Cu24) and 24 …
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Synthesis, structure, and magnetic properties of spin-1/2 kagomé antiferromagnets
… is the first known structurally perfect S = 1/2 metal-organic framework (MOF) kagomé and bears the shortest metal-metal distance of any such material. The frustrated material features antiferromagnetic nearest-neighbor exchange (T = -33 K) but undergoes ferromagnetic ordering (Tc = 2 K), perhaps …
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The selective oligomerization of ethylene with metal-organic frameworks
… with an emphasis on developing new metal-organic framework (MOF) catalysts for the selective dimerization of ethylene to 1-butene. The ability to tune the catalytically active site of a solid at the molecular level places MOFs in prime position to answer challenges in heterogeneous …
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An Integrated Process for Catalytical Conversion of Simple Sugars into Platform Chemicals, HMF and FDCA: Catalysis, Continuous Flow Reactor Design, Valorization of Waste By-Product
… catalysts, synthesized via the mechanochemical Metal-Organic Framework (MOF) method, were employed for the selective oxidation of HMF to FDCA. The physicochemical properties of these catalysts were systematically characterized to establish structure-activity relationships. Initial catalytic …
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Hydrothermal Chemistry of the M(I,II)/PAHA/Anion System
… investigation of the design and synthesis of metal organic framework (MOF) materials involving the M(I,II)/ polyazaheterocycle/anion system in order to expand our understanding of the principles which render the chemistry more controllable and predictable. In addition, this research …
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The Development of Hybrid Liquids and Glasses
… Liquids and Glasses Louis Michael David Longley Metal-organic framework (MOF) glasses are amorphous materials formed by heating a crystalline MOF into the liquid phase and then cooling to form an amorphous solid material. The hybrid nature, defined here as materials containing both inorganic and …
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Thermodynamic modeling and design of high-performance adsorption-based atmospheric water harvesting devices
… thesis, we develop a generalized thermodynamic framework to elucidate the interplay between adsorbent properties and operating conditions for optimal AWH performance. Our analysis considers the temperature-dependence of adsorption, which is critical but has been largely overlooked in past work. …
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Functional Nanomaterials From Bis-Urea Macrocycles
… macrocycle and formed its complexes with metals. These complexes have potential to further assemble through dative bonds, hydrogen bonding and aryl stacking interactions to afford metal organic framework (MOF). We found the Ag complex forms oligomers and polymers. In the polymer structure …
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Engineering Advanced Electrolyte and Metal Organic Framework Catalyst for Lithium Batteries
… (PS-QSSE) and the engineering of a high-entropy metal-organic framework (MOF) cathode catalyst to significantly change the discharge reaction pathway are the two main strategies used in this dissertation to overcome these significant obstacles. First, 1-methyl-3-propylimidazolium iodide (MPII) …
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