Hydrogen release of catalyzed lithium aluminum hydride by a mechanochemical reaction
نویسندگان
چکیده
منابع مشابه
Regeneration of lithium aluminum hydride.
Lithium aluminum hydride (LiAlH(4)) is a promising compound for hydrogen storage, with a high gravimetric and volumetric hydrogen density and a low decomposition temperature. Similar to other metastable hydrides, LiAlH(4) does not form by direct hydrogenation at reasonable hydrogen pressures; therefore, there is considerable interest in developing new routes to regenerate the material from the ...
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A study has been made of t he reactions of lithium aluminum hydride with methyl bromide, methylene chloride, meth ylene bromide, methylene iodide, chloroform, bromoform, and carbon t etrachloride. Except for hydrogen and unreacted h alida, essentia lly pure methane was formed in each case. The amount of hydrogen evolved increased with the n umber of halogen atoms in the molecule, reaching a max...
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Anion photoelectron spectroscopy and density functional theory were employed to study aluminum hydride clusters, AlnHm (4 e n e 8, 0 e m e 10). Photoelectron spectra revealed that Al4H4, Al4H6, and a family of species with general formula AlnHn+2 (5 e n e 8) have small adiabatic electron affinities and large HOMO-LUMO gaps (ranging from 0.5 to 1.9 eV) relative to those of their stoichiometric n...
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Compared to C60, carbon nanotubes, and graphite, graphene more effectively lowers the dehydrogenation temperature and improves the dehydrogenation kinetics of LiAlH4. With 15 wt% graphene incorporation, the initial hydrogen release temperature is ~80 °C (60 °C lower than that of pristine LiAlH4).
متن کاملLithium Aluminum Hydride Reactions in Pyridine Solution. Reductive Cleavage of Ketones1
contain 5.1 g. of 3-ethylpentane by vapor phase chromatography. The above material was purified by shaking with potassium permanganate solution followed by vapor phase chromatography ($6~ 1.3929). Final purification was effected by dissolving it in 10 ml. of acetic acid and adding solution of sodium dichromate and perchloric acid in 90% acetic acid until the orange color persisted. Water was ad...
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ژورنال
عنوان ژورنال: Journal of Alloys and Compounds
سال: 2008
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2007.08.015