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 14 of 14 for “"Chemical Separations"”.
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Rapidly-Deployable Materials Processing Approaches for Energy Applications and Chemical Separations
… materials systems relevant to solar energy and chemical separations to improve their performance using existing and rapidly-deployable systems. I first present and analyse the case of the instability of metal nanowire networks, where my work investigates and demonstrates design principles for …
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Spectroscopic Study of Compressible Mobile Phase and Stationary Phase Behavior in Chromatography
… conditions. Efforts to understand and optimize separations employing compressible mobile phases have been limited by a lack of understanding of the mobile phase density gradient. Mobile phase compressibility leads to gradients in linear velocity and solute retention and affects separation speed …
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Single molecule tracking studies of solvent-swollen microdomains in cylinder-forming polystyrene-Poly (ethylene oxide) diblock copolymer films
… alignment by solvent vapor annealing and in chemical separations using block copolymer monoliths. Here, investigation of the effects of solvent swelling on the molecular permeability and dimensions of cylindrical microdomains in polystyrene-block-poly(ethylene oxide) (PS-b-PEO) films is done …
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Advancing Industrial Decarbonization: Evaluating the State of Organic Membrane Technology for Class-Based Hydrocarbon Separation
Industrial organic chemical separations are major contributors to carbon dioxide (CO$_2$) emissions in the energy industry, contributing to global temperature rise. As membrane separations have successfully reduced energy requirements in water purification and desalination, their application in …
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Pyrometallurgical Oxide-Sulfide Anion Exchange for Improved Material Separation and Metal Production
… tedious and economically burdensome chemical separations are required to produce pure compounds amenable to materials manufacturing and metal production. An alternative approach is the development of chemical pretreatments that enable low cost, environmentally sustainable physical …
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Bismuth-, Tin-, and Lead-Containing Metal-Organic Materials: Synthesis, Structure, Photoluminescence, Second Harmonic Generation, and Ferroelectric Properties
… catalytic properties, molecular magnetism, chemical separations and sensing ability, luminescence and NLO properties, multiferroic, ferroelectric, and switchable molecular dielectric properties. We are interested in synthesizing non-centrosymmetric MOM single crystals possessing one of the …
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Covalent Post-Assembly Modification of Metal-Organic Capsules
… including molecular sensing, catalysis, and chemical separations. Post-assembly modification of these supramolecular structures has proven a useful strategy to impart the new functionality needed for these applications, circumventing the need to design and synthesize additional cage …
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Leveraging Competitive Sorption in Microporous Polymer Membranes to Enhance Gas Separation Performance
Chemical separations account for roughly half of the United States’ industrial energy consumption, 49% of which is attributed to distillation alone. Membrane-based systems, on the other hand, offer a more energy-efficient alternative to conventional separation processes because they do not require …
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Phase Behavior, Filling Dynamics, and Packing of Fluids inside Isolated Carbon Nanotubes
… of engineering systems, such as membranes for chemical separations and batteries for energy storage. The study of nanofluidics also informs our understanding of natural phenomena, including the single-file transport of water into biological cells and flow through nanoporous geologic media. In …
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Improvements in the Performance and Understanding of Switchable-Hydrophilicity Solvents
… application is distillation-free solvent-solute separations. The present research builds an understanding of the properties of amines that determine whether they are SHSs or not. It also applies this understanding to the development of new SHSs with fewer health and environmental hazards, such as …
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Surface characterization of self-assembled monolayers for applications of selective ionic transport through nanoporous membranes
… with applications ranging from biosensors to chemical sensing through nanoporous membranes. The applications of these devices are often limited by the quality of the SAM. For transport studies utilizing a SAM on a gold-coated nanoporous membrane, electrochemical impedance spectroscopy (EIS) …
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Energy analysis and fabrication of photovoltaic thermal water electrolyzer and ion transport through modified nanoporous membranes
… fields of water desalination, biosensing, and chemical separations. Bare nanopores can be used as size-selective filters but if the surface chemistry of a nanopore is modified by coating it with another substance, however, enhanced separations based other properties can be achieved. Many …
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Functionalized High Aspect Ratio Cellulose Nanocrystal Filled Composites for Gas and Liquid Separations
… is a ubiquitous feature of industry, and these separations are necessary for every facet of life down to the simple functions of breathing clean air and drinking potable water. These chemical separations account for a large portion of the total energy use both in the United States and globally. …