Direct synthesis of catalyzed hydride compounds
Abstract
A method is disclosed for directly preparing alkali metal aluminum hydrides such as NaAlH.sub.4 and Na.sub.3 AlH.sub.6 from either the alkali metal or its hydride, and aluminum. The hydride thus prepared is doped with a small portion of a transition metal catalyst compound, such as TiCl.sub.3, TiF.sub.3, or a mixture of these materials, in order to render them reversibly hydridable. The process provides for mechanically mixing the dry reagents under an inert atmosphere followed by charging the mixed materials with high pressure hydrogen while heating the mixture to about 125.degree. C. The method is relatively simple and inexpensive and provides reversible hydride compounds which are free of the usual contamination introduced by prior art wet chemical methods.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175046
- Patent Number(s):
- 6793909
- Application Number:
- 10/066,375
- Assignee:
- Sandia National Laboratories
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Gross, Karl J., and Majzoub, Eric. Direct synthesis of catalyzed hydride compounds. United States: N. p., 2004.
Web.
Gross, Karl J., & Majzoub, Eric. Direct synthesis of catalyzed hydride compounds. United States.
Gross, Karl J., and Majzoub, Eric. Tue .
"Direct synthesis of catalyzed hydride compounds". United States. https://www.osti.gov/servlets/purl/1175046.
@article{osti_1175046,
title = {Direct synthesis of catalyzed hydride compounds},
author = {Gross, Karl J. and Majzoub, Eric},
abstractNote = {A method is disclosed for directly preparing alkali metal aluminum hydrides such as NaAlH.sub.4 and Na.sub.3 AlH.sub.6 from either the alkali metal or its hydride, and aluminum. The hydride thus prepared is doped with a small portion of a transition metal catalyst compound, such as TiCl.sub.3, TiF.sub.3, or a mixture of these materials, in order to render them reversibly hydridable. The process provides for mechanically mixing the dry reagents under an inert atmosphere followed by charging the mixed materials with high pressure hydrogen while heating the mixture to about 125.degree. C. The method is relatively simple and inexpensive and provides reversible hydride compounds which are free of the usual contamination introduced by prior art wet chemical methods.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 21 00:00:00 EDT 2004},
month = {Tue Sep 21 00:00:00 EDT 2004}
}
Works referenced in this record:
Solid state phase transformations in LiAlH4 during high-energy ball-milling
journal, December 2000
- Balema, V. P.; Pecharsky, V. K.; Dennis, K. W.
- Journal of Alloys and Compounds, Vol. 313, Issue 1-2
Titanium catalyzed solid-state transformations in LiAlH4 during high-energy ball-milling
journal, November 2001
- Balema, V. P.; Wiench, J. W.; Dennis, K. W.
- Journal of Alloys and Compounds, Vol. 329, Issue 1-2