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Showing 1 to 20 of 125 for “"Hydrides."”.
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The chemistry of zinc hydrides.
… of complex zinc, magnesium and beryllium hydrides. Least is known about complex zinc hydrides and this thesis records the results of a range of reactions between zinc dihydride and substrates containing acidic protons or unsaturated bonds. Zinc dihydride reacts with compounds containing …
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Hydrides in [FeFe]-hydrogenase model complexes
The student, Michaela Carlson, submitted this Dissertation for approval on 2018-04-17 at 10:07.
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Synthesis and reactivity of technetium hydrides
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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Mixed anion complex hydrides for hydrogen storage
… structures of three amide-borohydride complex hydrides of lithium and sodium, Li\(_4\)BH\(_4\)(NH\(_2\))\(_3\), Li\(_2\)BH\(_4\)NH\(_2\) and Na\(_2\)BH\(_4\)NH\(_2\), have been solved by powder diffraction methods and characterised by infrared and Raman spectroscopy. The thermal decomposition …
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Crystallography of Shear Transformations in Zirconium-Hydrides
Made available in DSpace on 2014-12-14T16:00:37Z (GMT). No. of bitstreams: 1 7811216.pdf: 4907136 bytes, checksum: 8c89c13d019a563f2454a82e41ffde61 (MD5) Previous issue date: 1978
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Superconductivity of thorium hydrides and thorium deuterides
… we have tested the superconductivity of thorium hydrides and found that Th4 H15 is a superconductor with a transition temperature near 8K, Measurements of the diamagnetic susceptibility of 24 thorium hydride and thorium deuteride samples of various compositions have been made to determine the …
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Electronic and lattice vibrational properties of thorium hydrides
The low temperature heat capacities of several bulk samples of Th4H15 and Th4D15 have been measured in the normal state over the temperature range from 1.4 to 20 K. Values of the electronic heat capacity coefficient, y, and the Debye temperature, eD' have been determined. No isotope effect upon the …
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Electrochemical energy conversion using metal hydrides hydrogen storage materials
Metal hydrides hydrogen storage materials have the ability to reversibly absorb and release large amounts of hydrogen at low temperature and pressure. In this study, metal hydride materials employed as negative electrodes in Ni-MH batteries are investigated. Attention is on AB5 alloys due to their …
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Fullerene hydrides and studies toward the syntheses of fulvalenes
Benkeser reduction was used to synthesize highly hydrogenated fullerenes, C60H36, C60H38, C 60H40, C60H42 and C60H 44. 1H- and 13C-NMR spectra of HPLC purified fractions show that more highly hydrogenated fullerenes exhibit signals that are shifted upfield. The opposite trend was observed in 3He …
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D2 and H2 interactions with chemically reactive metal hydrides
… of chemically reactive nanoparticle metal hydrides with hydrogen gas. A consistent behavior of a net anomalous heat release has been seen. With consultation from peers and comparison to similar experiments by a Japanese research group called Technova, there has been an effort to analyze …
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Characterization of hydrides and delayed hydride cracking in zirconium alloys
… of the missing gaps in the study of zirconium hydrides with state-of-art experiments, cutting edge tomographical technique, and a novel numerical algorithm. A new hydriding procedure is proposed. The new anode material and solution combination overcomes many drawbacks of the AECL hydriding …
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Development of metallic catalysts for hydrogen production from metal hydrides
Al giorno d'oggi, le celle a combustibile a membrana a scambio protonico (PEMFC), che utilizzano l'idrogeno come combustibile, sono considerate una delle alternative più promettenti ai motori a combustione. Per un corretto funzionamento di una PEMFC, è necessario un accumulo di idrogeno sicuro e …
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Transition metal allyls and hydrides as chemical vapor deposition precursors
Thin films of high purity palladium can be prepared at low temperature (250$\sp\circ$C) metal-organic chemical vapor deposition of bis(allyl)palladium or (cyclopentadienyl)(allyl)palladium.
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Synthesis, Structure and Transport Properties of New Lanthanum-based Ternary Hydrides
… stabilize superconducting phases of lanthanum hydrides at reduced pressures while retaining favorable superconducting properties. Four classes of lanthanum-based ternary hydrides were synthesized and characterized under high pressure using diamond anvil cells, synchrotron X-ray diffraction, …
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Alkane Elimination Reactions between Transition Metal Hydrides and Rare-Earth Alkyls
In the present work various transition metal hydrides were examined regarding their potential to form unsupported bonds towards rare-earth metals. Selected rare-earth alkyls were reacted with the metal hydrides in question. Motivated by previous results of the Kempe group in which the alkane …
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Recovery Of Hydrogen And Helium From Their Mixtures Using Metal Hydrides
Waste streams of hydrogen and helium mixtures are produced at the Kennedy Space Center during purging of the hydrogen systems and supply lines. This process is done prior to and after hydrogen servicing. The purged waste gases are lost to the atmosphere, resulting in an annual loss of 2 million and …
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