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Showing 1 to 7 of 7 for “"Borohydrides"”.
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NMR Study of Borohydrides for Hydrogen Storage Applications
There is great interest today in developing a hydrogen economy, and hydrogen powered vehicles to replace vehicles powered by fossil fuels. This presents many challenges for researchers, and one of the biggest is developing materials that could be used to store the hydrogen on-vehicle. We used …
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An investigation into the synthesis and characterisation of metal borohydrides for hydrogen storage
… sodium borohydride to try to form homoleptic borohydrides. Mechanical milling of zinc chloride with sodium borohydride resulted in the formation of a covalent complex NaZn\(_2\)(BH\(_4\))\(_5\). Thermal decomposition occurred at 80°C with a mass change of 12 wt.%, associated with the evolution …
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Developing Core-Shell Borohydride Nanoarchitectures and Understanding their Structure-Hydrogen Release/Uptake Relationships
… with high density, compactness, and safety. Borohydrides have been extensively investigated as promising candidates for H2 storage; however, the high thermodynamic stability, sluggish H2 release kinetics, and limited H2 reversibility have hampered their practical use. Nanosizing is an …
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Improving Existing and Discovering New Hydrogen Storage Materials Using Computational Materials Modeling
Alternative energy is currently one of the most active research areas in science. Lessening our dependence on fossil fuels has economic, environmental, and political benefits. With almost one-third of US energy going into transportation, a large piece of the puzzle is developing an alternative …
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I. The Reaction of Carboxylic/Thiocarboxylic Acids with Isonitriles II. Ruthenium Hydride Ring Opening of an Azetidinium Cation
… straight-chain amine. More reactive hydrides (borohydrides, LiAlH4) erode this preference. A s is the case with electrophilicity, there is a significant difference in the reduction potential between a phenyl aziridinium (Epc = -0.93 V vs FcH+/FcH) and a phenyl azetidinium (Epc = -1.43 V). While …
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Vapor Pressures and Thermodynamic Properties of Mg(BH4)2, KBH4 and RbBH4 Using Torsion-Effusion and Thermogravimetric Method
… behaviors were expected for these alkali metal borohydrides. The measured average molecular weight of KBH4 is 23.5 g/mol for P1 cell and 23.3 g/mol for P2 cell. These values were very close to the calculated molecular weights of effusing gases of 22.5 g/mol but much less than the theoretical …
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High coordination number compounds of thorium borohydride, and of calcium and strontium N,N-dimethylaminodiboranates
… by six borohydride ligands. Four of these six borohydrides are coordinated in a tridentate κ3 fashion, and the other two BH4- groups bridge between neighboring Th centers in a bis(bidentate) κ2,κ2 fashion forming a polymeric structure, as determined by single crystal X-ray diffraction. This is …