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.
Results
Showing 1 to 16 of 16 for “"eutectic mixture"”.
-
Exploring Sulfur Recovery in a Eutectic Mixture of Biphenyl and Diphenyl Ether
… phase sulfur recovery process was explored in a eutectic solvent of biphenyl and diphenyl ether. Sulfur conversions up to 99.96% could be achieved within the solvent over commercial alumina and titania catalyst for a simulated tail-gas feed containing up to 5% sulfur species. A temperature range …
-
Selektives Laserschmelzen zur generativen Herstellung von Bauteilen aus hochfester Oxidkeramik
… melting a purely ceramic zirconia-alumina powder mixture using a laser beam, objects of almost 100% density and a flexural strength of more than 500 MPa were manufactured. In order to avoid crack formation, the ceramic is preheated to a temperature above 1600°C during the build-up process. For …
-
Dielectric and electro-optical properties of some cyanobiphenyl liquid-crystals
… Dielectric response of thin layers of E7 and E8 (eutectic mixture liquid-crystals) have been measured in the frequency range (12 Hz-100 kHz) and over a range of temperature (183-337K). Dielectric spectra were also obtained for supercooled E7 and E8 in the Hz and kHz range. When the measuring …
-
Understanding the Solid State, Solubility and Dissolution Behavior of Cefuroxime Axetil Diastereomers in Interactive Mixture Formulations
… CFA is present in commercial products as a mixture of diastereomers, which commonly form eutectic mixtures. A phase diagram was constructed utilizing differential scanning calorimetry. It was observed that the diastereomers formed a eutectic mixture with a composition of 75% isomer B and a …
-
CO₂ Capture with Lithium Oxide in Molten Salt Media : A Case Study of CO₂ Capture via Electrochemically Produced Metal Oxide
… sorbent (i.e., metal oxide) stability. Li₂O in eutectic mixture of potassium nitrate (KNO₃) and lithium nitrate (LiNO₃) was chosen as a case study due to the relatively well-understood chemistry of the system and the potential synergistic effects between metal oxide and the molten salt. …
-
DRUG RELEASE FROM LIQUID FILLED CAPSULE FORMULATIONS
… vitro release of theophylline and ibuprofen from mixtures of PEG with 0 - 10 % w/w PVA, liquid-filled into hard gelatin capsules, have been studied. The release of both drugs was prolonged and controlled by the addition of PVA, particularly in concentrations > 2 % w/w. The reproducibility of the …
-
FLOW VISUALIZATION OF TWO-PHASE FLOW IN MOLTEN-SALT: HELIUM BUBBLING IN LITHIUM FLUORIDE - SODIUM FLUORIDE - POTASSIUM FLUORIDE (LIF- NAF- KF)
… The fluoride-salt chosen for this research was a eutectic mixture of LiF- NaF-KF (46.5-11.5-42%), also known as FLiNaK. A set of helium bubble tests were conducted at 550 - 600 °C, and Particle Image Velocimetry (PIV) technique was successfully applied to estimate velocity fields. The analysis …
-
Synthesis of nanostructured materials in deep eutectic solvents
Deep eutectic solvents (DES), a new generation of non-toxic, eco-friendly and biodegradable solvents discovered in 2001 consist of a variety of cations and anions. These new sub-category of ionic liquids present interesting properties due to the hydrogen bonding between their components and are …
-
Electrochemistry of systems containing aluminum phosphate dissolved in fused borate and phosphate mixtures
… dissolved in fused borate and phosphate mixtures. Aluminum coated metals combine the mechanical properties of the base metal and chemical resistance of aluminum. Electroplating, gives an even and controlled thickness of coating and imparts corrosion resistance. Methods for the deposition …
-
Drug-Polymer and Drug-Lipid Miscibility for the Development of Amorphous Solid Dispersions and Solid Lipid Nanoparticles
… Miscibility of lipid and surfactant mixtures with and without FLT were investigated using MDSC. SLNs with and without drug-loading were prepared by ultrasonication and characterized for particle size. Drug-loaded SLNs were lyophilized and characterized in a similar manner.|Miscibility …
-
Rauchgasseitige Korrosion von Nickelbasislegierungen für zukünftige 700C-Dampfkraftwerke
… melting point of 884°C. On nickel base alloys an eutectic mixture of nickel sulphate and sodium sulphate with a melting point of 671°C can be generated, which leads to accelerated corrosion. This work examines, whether the high amount of sulphur and alkali metals will induce hot corrosion at the …
-
Nanofluids with optimised thermal properties based on metal chalcogenides with different morphology
… in the preparation of these nanofluids is the eutectic mixture of biphenyl and diphenyl oxide typically employed as heat transfer fluid in concentrating solar power plants. Mainly two preparation methods have been explored: the liquid phase exfoliation method, and the solvothermal synthesis of …
-
Oscillating Aqueous Gels as Drug Delivery Systems
… as controls. Lidocaine and lidocaine/prilocaine eutectic mixture were selected as the model drug components. Optical and polarized light microscopy images were used to determine the structure and texture of each aqueous gel, and they have indicated cubic liquid crystal structures for the …
-
CxNy-materials from supramolecular precursors for “All-Carbon” composite materials
… of the second component C₂N. Here, a deep eutectic mixture from hexaketocyclohexane and urea was structured using the biopolymer chitosan. This scaffolding resulted in mesoporous nitrogen-doped carbon monoliths and beads. CO₂- and dye-adsorption experiments with the obtained monolith …
-
Heat Transfer and Flow in Solar Energy and Bioenergy Systems
… new generation of HTF. Currently, a halide salt eutectic mixture (NaCl-KCl-ZnCl₂) as a potential HTF for future CSP applications has been proposed by a multi-institute research team, led by University of Arizona. The thermophysical properties of the halide eutectic salt have been measured. …
-
Cellulose based transition metal nano-composites : structuring and development
… an aqueous iron salt solution and heating this mixture under inert atmosphere to 640 °C and above, a liquid eutectic mixture of iron and carbon with an atom ratio of approximately 1:1 forms. The eutectic droplets were monitored with in-situ TEM at the reaction temperature where they could be …