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 433 for “"Hydride"”.
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Multi-component ab2 metal hydride alloys for nickel metal hydride battery applications
<p>Compared to the mish metal-based AB<sub>5</sub> MH alloy commonly used in Ni/MH batteries, the transition metal-based AB<sub>2</sub> MH alloy not only reduces the rare earth dependency, it also has higher specific energy. In order to further improve the performance of AB<sub>2</sub> MH alloy, …
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Encapsulation of metal hydride nanoparticles
… zero carbon energy infrastructures. Alkali metal hydride nanoparticles could provide a route to an efficient lightweight hydrogen storage technology for automotive applications. However, a particular issue with alkali metal hydrides is their sensitivity to air/moisture, making their …
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B-incorporation kinetics and charge transport property of silicon germanide(001) layer grown by GS-MBE from silicon hydride, germanium hydride, and boron hydride
… hydrogen desorption from Si and Ge monohydride for which the activation energy is 2.04 and 1.56 eV, respectively. The zero-coverage reactive sticking probability of $\rm Si\sb2H\sb6$ on Si(001)2 x 1 ($\rm Ge\sb2H\sb6$ on Ge(001)2 x 1) in the impingement-flux-limited growth regime was …
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Hydrogen transport in hydride and non-hydride forming metals and the mechanistic implications for fracture behavior
… a better understanding of hydrogen transport, hydride formation and their mechanistic effects on stress and strain is needed to elucidate the role of hydrogen in the mechanics of fracture.
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Ruthenium Hydride Catalyzed Silylvinylation of Alkynes
<p>The intermolecular ruthenium hydride catalyzed coupling of internal alkynes with subsequent insertion of olefin acceptors is described. This approach utilizes a vinyl silicon tether to provide complete regiocontrol, a stereoselective anti-exo-dig cyclization which affords a tetrasubstituted …
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Thermodynamic properties of metal hydride nanostructures
… and volumetric storage capacities of metal hydrides make them ideal hydrogen carriers if the limitations associated with their slow hydrogen release kinetics, their high hydrogen release temperatures, and their poor thermal properties can be resolved. In this thesis, the thermodynamic and …
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Germanium hydride derivatives of transition metal carbonyls
Compounds of the type Fe(CO)₄(GeR₃)₂ containing two different methylgermyl substituents have been prepared and characterised. The preparation was via the exchange reaction Fe(CO)₄(GeR₃)₂ + [Mn(CO)₅]⁻ → [Fe(CO)₄(GeR₃)]⁻ + Mn(CO)₅(GeR₃) [Fe(CO)₄(GeR₃)]⁻ + GeXR’₃ → Fe(CO)₄(GeR₃)(GeR’₃) The compounds …
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Group 3 and Group 13 Metal Hydride Compounds
… group 3 and group 13 metal alkyl and hydride complexes. These complexes were supported by aminopyridinato, guanidinato and phenolato ligands. Guanidinato ligand stabilized aluminum alkyl complexes were synthesized through alkane elimination. Aminopyridinato and guanidinato ligand …
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Oxidation & 1, 5-hydride shift of sulfoximine derivatives
… of N-alkyl and N-aryl sulfoximines and 1,5-hydride shift of S-alkenyl sulfoximines have been studied. Oxidation of N-alkyl sulfoximines using dimethyldioxirane gave sulfones and nitroso derivatives. A mechanism for the process was proposed. Thermal isomerization and decomposition of …
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Hydrogen desorption and absorption for activated magnesium hydride
The interaction between MgH2 and LiBH4 was studied to determine the resultant effects on hydrogen desorption and absorption kinetics for potential use as a hydrogen storage material. It is found that the addition of LiBH4 in small molar ratios results in improved kinetics of the same order as those …
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Thermal hydraulic analysis of hydride fuels in BWR's
This thesis contributes to the hydride nuclear fuel project being completed by UC Berkeley and MIT to assess the possible benefits of using hydride fuel in light water nuclear reactors (LWR's). More specifically, this thesis deals with the thermal hydraulic analysis of BWR reactors. Several papers …
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