MBr-AlBr3-solv systems at 25�

Mikheeva, V.I.; Arkhipov, S.M.; Pruntsev, A. E.

doi:10.1007/bf00926158

Cited by 5 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The above findings become contradictory with the proposal of Mikheeva and Arkhipov [88] who discuss the stoichiometry of equation (5) in a different way with the formation of Li 3 AlH 6 , a complex hydride reported by Ehrlich et al [89]. They confirmed these results by XRD studies and so the reactions become changed as follows:…”

Section: Thermodynamics and Hydrogenation Propertiescontrasting

confidence: 51%

Novel hydrogen storage materials: A review of lightweight complex hydrides

Jain

2010

Journal of Alloys and Compounds

454

240

View full text Add to dashboard Cite

Section: Thermodynamics and Hydrogenation Propertiescontrasting

confidence: 51%

Novel hydrogen storage materials: A review of lightweight complex hydrides

Jain

2010

Journal of Alloys and Compounds

454

240

View full text Add to dashboard Cite

“…The second of these is similar to the effect ob- served in the case of LiAlH4; this was shown to be due to the decomposition of LiH in the presence of aluminum. The first effect which is associated with a major weight loss (196°, 76.2% weight loss, 75% cal-culated for amine loss) corresponds to the decomposition shown in (6). The net effect of amine coordína-los0 LiAlHj-TEDA -> LiH + TEDA + 3/2H2 + A1 (6) tion is the stabilization of the complex metal hydride.…”

Section: Resultsmentioning

confidence: 99%

Thermal decomposition of complex metal hydrides

Dilts¹,

Ashby²

1972

Inorg. Chem.

167

130

View full text Add to dashboard Cite

“…The monoclinic structure (space group P2 1 /c) was described to consist of almost regular [AlH 4 ] À tetrahedra and lithium as bridging ions between the tetrahedra. Shortly after publication of the crystal structure data, other authors proposed different cells [62,63]. More than 30 years later, Hauback et al re-investigated the early structure analysis by combined neutron and X-ray powder diffraction studies and confirmed the results of Sklar and Post [64].…”

Section: Synthesis and Crystal Structurementioning

confidence: 62%

“…Physical constants of selected complex aluminum hydrides.consisting of isolated [AlH 6 ] 3À octahedral, is formed from the tetrahydride structure[62,74]. In a further endothermic reaction step (DH ¼ 25 kJ mol À1 H 2 ), the hexahydride decomposes and LiH and Al metal are formed (Eq.(5.19)).…”

mentioning

confidence: 99%

Complex Hydrides

and

Felderhoff

2010

Handbook of Hydrogen Storage

View full text Add to dashboard Cite

Complex hydrides are salt-like materials in which hydrogen is covalently bound to the central atoms, in this way a crystal structure consisting of so-called complex anions is formed. In general, complex hydrides have the chemical formula A x Me y H z . Compounds where position A is preferentially occupied by elements of the first and second groups of the periodic table and Me is occupied either by boron or aluminum are well known and have been intensively investigated. However, another possibility is that complex hydrides are built by transition metal cations. Complex metal hydrides have been known for more than 50 years, but for many years they were not considered for reversible hydrogen storage due to the high kinetic barriers of the decomposition requiring high temperatures. The situation changed in 1997 when Bogdanovi c and Schwickardi discovered that the kinetic barrier of the decomposition of the complex metal hydride, NaAlH 4 , can be lowered by the addition of Ti catalysts and that the material becomes reversible close to acceptable technical conditions [1]. They further showed not only that catalysts can enhance the kinetics of dehydrogenation but also that rehydrogenation under moderate conditions becomes feasible. This breakthrough induced the publication of a tremendous number of papers focusing on the synthesis and the properties of complex hydrides. The major goal is to understand the basic steps of dehydrogenation and rehydrogenation and the role of catalysts. Many complex metal hydrides have high hydrogen gravimetric storage capacities and some of them are commercially available. Some complex hydride systems, such as Mg 2 FeH 6 and Al(BH 4 ) 3 , have an extremely high volumetric hydrogen density of up to 150 kg m À3 . Compared to liquid hydrogen with a volumetric density of 70 kg m À3 , the amount of hydrogen in such metal hydrides is much higher. This makes complex transition metal hydrides interesting as potential storage materials.Handbook of Hydrogen Storage. Edited by Michael Hirscher

show abstract

MBr-AlBr3-solv systems at 25�

Cited by 5 publications

References 2 publications

Novel hydrogen storage materials: A review of lightweight complex hydrides

Novel hydrogen storage materials: A review of lightweight complex hydrides

Thermal decomposition of complex metal hydrides

Complex Hydrides

Contact Info

Product

Resources

About