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 58 for “"synthesis route"”.
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Development and optimization of zeolite synthesis route from natural koalin for adsorption of dyes
Synthesis of zeolite using kaolin as the main source of alumina and silica has been identified as a novel zeolite production process, which could reduce the cost of using the synthetic reagents and the high energy consumption. A low grade kaolin was used for studying the most suitable synthesis …
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Conformationally-Controlled Late-Stage Modifications for SAR Studies of the C-3-Glcp Moiety of Ipomoeassin F
… creating, an efficient, scalable, and flexible synthesis route for various analogs. The 18-linear step synthesis utilized multiple regio-selective and chemo-selective reactions, while not affecting the highly functionalized (1→2)-β-disaccharide moiety. The synthesis route modified the C-3 …
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Materials discovery using in situ reduction and X-ray diffraction
… space. Reduction reactions provide a synthesis route that has been shown to gently traverse a compositional space. Traditional synthesis at high temperatures tends to only favor the formation of thermodynamically stable compounds, however, with a more controlled synthesis route, …
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Replacement of homogeneous acids in the conversion of meta-phenylenediamine to resorcinol by Heterogeneous Analogues
… production of resorcinol are available with each synthesis route having intrinsic advantages and disadvantages that differ from one process to another. A viable route to resourcinol in South Africa is via meta-dinitrobenzene due to the large-scale production of nitrobenzene from benzene. Since …
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Synthesis and Characterization of Magnetic II-VI Nanoparticles
… imaging (MRI). In this study, we present a synthesis route to grow colloidal II-VI magnetic nanoparticles at room temperature with easily handled, relatively non-toxic source materials. CoSe and CrSe nanocrystals were synthesized in an aqueous solution where gelatin is used to retard the …
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Total synthetic efforts and structure elucidation in route to brocazine and cahuitamycin natural products
… currently undertaking the development of a total synthesis route to access these natural products and their analogs. This work highlights the optimization of key steps (i.e., spirolactonization, diketopiperazine (DKP) formation, and sulfenylation) and the access of the brocazine E and F carbon …
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Machine Learning Enabled Inorganic Synthesis Planning and Materials Design
… and computing technology. Data-driven synthesis planning with machine learning is a key step in the design of novel inorganic compounds with desirable properties. Inorganic materials synthesis is often guided by heuristics and chemists' prior knowledge and experience, built upon …
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Funkcionalizuotų alkiloligoetilenoksidų sintezė ir tyrimas /
… perspective derivatives are convenient for the synthesis of unsymmetrical lipids. An effective synthesis route of several steps and isolation method without column chromatography for the synthesis of thiolipids were also discovered. New functionalized biotins were synthesized for tethering of …
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Synthesis and investigation of functionalized alkyl oligo(ethylene oxides) /
… perspective derivatives are convenient for the synthesis of unsymmetrical lipids. An effective synthesis route of several steps and isolation method without column chromatography for the synthesis of thiolipids were also discovered. New functionalized biotins were synthesized for tethering of …
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Synthesis, properties, and modifications of engineering polymers
… the potassium carbonate/N-methylpyrrolidone synthesis route. In particular, deuterated poly(arylene ether sulfones) were synthesized in order to investigate molecular motion via deuterium NMR. The mechanical, dynamic mechanical and fracture properties of these materials were also examined. …
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Funktionalisierte Polymerkomposite auf Basis von Poly(3,4-ethylendioxythiophen) und Gold
… One way to achieve processible materials is the synthesis of colloidal particles. Thus, this work focuses on the development of conductive particles by preparing composite structures. Polymeric colloids like latex particles and microgels were used as templates for the oxidative polymerization of …
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Design and synthesis studies of new s-adenosyl-l-methionine analogues
… steps from the starting material adenosine. The synthesis route has been divided into three parts: introduction of the nitrogen at the 5' position, synthesis of aromatic aldehyde, and connection of these two compounds. More compounds with the same core structure will be designed and synthesized. …
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Preparation of silica aerogels with improved mechanical properties and extremely low thermal conductivities through modified sol-gel process
… of silica aerogels. We have established a new synthesis route, a 3-step sol-gel processing method. The method provides better control of the formation of aerogel structures. The produced silica aerogels show much improved ductility compared to conventional methods in literatures. Furthermore, …
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Sodium-Ion Battery Cathode Active Material Cost Drivers and Manufacturing Scale-up Barriers
… class’s simple structure, straightforward synthesis, and potential scalability, layered metal oxides (LMOs) are a particularly promising CAM under study. This thesis investigates the cost drivers and scale-up barriers of LMOs. Processes and equipment considerations influencing scale-up are …
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Supramolecular porphyrin arrays on DNA and SWNT scaffolds
… of freedom about the linking moiety has been synthesised. Oligonucleotide strands containing the novel ‘flexible’ porphyrin modified nucleoside or a previously published ‘rigid’ linked porphyrin modified nucleoside were synthesised. The resulting systems were analysed by photospectrometric …
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The synthesis of aluminium hydroxide and oxyhydroxide
… step is required. Beta alumina may also be synthesised directly from the various aluminium hydroxide ( Al(OH)₃ ) and aluminium oxyhydroxide (AIOOH) polymorphs. The particular oxygen sublattice of the starting material is critical in determining which phases of beta alumina are formed. …
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Structure and performance of carbon xerogel molded emitters for micropropulsion applications
… uniformity. The substrates are created through a synthesis route which is advantageous for reproducibility. Single carbon xerogel emitter tips and emitter arrays are molded on previously synthesized carbon xerogel substrates. Molding is an additive method which allows for parallel processing and …
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Synthetic investigation of Mn(I) and Re(I) N-heterocyclic carbene complexes
… manganese transition metals. Diverse methods of synthesis were studied. The direct approach, in which the ylidene obtained from deprotonation of 1,3-bis(2,4,6- trimethylphenyl)imidazolium chloride was added to the metal substrate, proved to be unsuccessful as isolation of the free carbene should …
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Assembly of Life Cycle Inventories using Physical Models and Supervised Learning to support Sustainable Process Development in the Pharmaceutical Industry
… environmental impacts associated with novel synthesis pathways is essential. Life Cycle Assessment (LCA) is a methodology to holistically analyse the environmental impacts of goods and services. However, there are challenges in its application in early-stage process development: assembling …
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