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 17 of 17 for “"organic solution"”.
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Permanganate oxidations of aromatic hydrocarbons in aqueous and organic solution
… by permanganate have been studied in aqueous solution and in toluene. In water at pH 7, the reactions of toluene, ethylbenzene, and cumene with KMnO$\sb4$ were studied. In toluene, $\rm\sp{n}Bu\sb4NMnO\sb4$ was used as the oxidant in the reactions of toluene, ethylbenzene, cumene, …
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Synthesis of side-chain polystyrenes for all organic solution processed OLEDs
… to be applied in multilayer OLEDs fabricated by solution process techniques. Manufacture of optoelectronic devices by solution process techniques is meant to decrease significantly fabrication cost and allow large scale production of such devices. This dissertation focusses in three series, …
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Metal seed deposition from organic solutions for subsequent electroless plating
… on electronic material substrates from organic solutions for subsequent electroless Cu plating is being developed. The mechanism is based on spontaneous electrochemical displacement reactions. The more noble metal is reduced and deposited on the substrate surface; simultaneously the less …
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Spontaneous metal deposition from organic solutions for electronic materials applications
… for spontaneous and selective ECD of metal from organic solutions in contrast to the more conventional aqueous media. The more noble metal ions loaded in the organic solution are reduced and deposited onto the less noble metal substrate, which is simultaneously dissolved into the organic.</p> …
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A study on organic fouling of reverse osmosis membrane
… (such as pH, ionic strength, ion type) of solution chemistry had significant impacts on the fouling potential of organic solution. Additionally, apart from feed solution properties, more variables affected the organic fouling development in a long RO membrane channel, where it was found …
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Anions in hydrophobic environments: liquid-liquid extraction of sulfate and chloride, and membrane transport of chloride
… lipid bilayer or the extraction of an anion into organic solution requires the stabilization of a charged species in a hydrophobic environment. Due to the similar energetic barriers of both processes, liquid-liquid extraction can potentially be used as a model for membrane transport. Carrier …
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The manufacture of monosodium phosphate from wet process acid by amine extraction
… chloride on the principle that an amine in organic solution can extract the elements of hydrochloric acid (HCl). This is possible because amines are more selective for hydrochloric than for phosphoric acid. If wet process phosphoric acid is used, the impurities must be separated in some way …
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Síntese e caracterização de filmes de polietileno/poli(álcool vinílico) contendo nanopartículas de negro de fumo e sílica
… and processability, despite being permeable to organic solvents. In order to improve their barrier properties, the aim of this work was study the synthesis and characterization of HDPE and poly (vinyl alcohol) (PVA) mixtures, and verify the effect of crosslinking of PVA with maleic anhydride …
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Supercritical fluid spray processes for microencapsulation and formation of submicron aqueous dispersions of pharmaceutical compounds
… (PCA) and Rapid Expansion from Supercritical Solution (RESS) are two processes based on supercritical fluids that are capable of producing submicron particles. Novel variations of these basic processes have been examined to produce stable particles of various pharmaceutical compounds. PCA is …
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Resource Recovery By Osmotic Bioelectrochemical Systems Towards Sustainable Wastewater Treatment
… solute via recovering ammonia from synthetic organic solution, which was then applied in the FO for extracting water from the MEC anode effluent. The system has been advanced with treating landfill leachate. A mathematical model developed for ammonia removal/recovery in BES quantitatively …
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Epitaxial growth of semiconductors and chiral metal surfaces using spin coating and electrodeposition
… thin films. This dissertation explores the solution process methods of electrodeposition and spin coating for growth of epitaxial thin films. First, a method is developed to directly electrodeposit epitaxial CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> perovskite for solar cells on single …
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Amphiphilic BAB-triblock copolymers bearing fluorocarbon groups : synthesis and self-organization in aqueous media
… concentrated and highly concentrated aqueous solutions using DLS, turbidimetry, 1H- and 19F-NMR, rheology, determination of the CMC, foam height- and surface tension measurements and microscopy. Furthermore, their ability to stabilize emulsions and microemulsions and the wetting behaviour of …
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Weak intermolecular interactions as binding probes and analytical tools
… to the presence of these hydrocarbons in organic solution. The decrease in fluorescence intensity was found to originate from a combination of static and dynamic quenching. An analytical array was constructed based on these polymers which was able to generate differential responses for …
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Improving the stability of an oxime based electrochemical microsensor for organo-phosphate vapor detection
… organo-phosphate vapors using an aqueous oxime solution. The analyte diffuses from the high flow rate gas stream through a porous membrane to the low flow rate aqueous phase. It reacts with the oxime PBO (1-Phenyl-1,2,3,-butanetrione 2-oxime) to produce cyanide ions, which are then detected …
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Routes to complexes of open chain polyethers
… the presence of K, Rb, Cs, and NH4 in an aqueous solution into the solutions of HL or HL(B) in methylene chloride was studied over a pH range. In contrast to conclusions reached previous, it was found that the Cu(ll) was extracted as [CuL2] and not as [Cu(KL2)2]. The structure of the blue crystals …
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Fodder legumes for Green Biorefineries
… legumes, as feedstock. After fractionation, an organic solution (press juice) forms; this is used for the production of organic acids, chemicals and extracts, as well as fertilisers. A fibre component (press cake) is also created to produce feed, biomaterials and biogas. This thesis examines a …