Hydrolysis Characteristics of Polycrystalline Lithium Hydride Powders and Sintered Bulk
Ambient hydrolysis products in moist air and
hydrolysis kinetics in argon with humidity of RH1.5% for
polycrystalline LiH powders and sintered bulks were investigated by
X-ray diffraction, Raman spectroscopy and gravimetry. The results
showed that the hydrolysis products made up a layered structure of
LiOH•H2O/LiOH/Li2O from surface of the sample to inside. In low
humid argon atmosphere, the primary hydrolysis product was Li2O
rather than LiOH. The hydrolysis kinetic curves of LiH bulks present a
paralinear shape, which could be explained by the “Layer Diffusion
Control" model. While a three-stage hydrolysis kinetic profile was
observed for LiH powders under the same experimental conditions.
The first two sections were similar to that of the bulk samples, and the
third section also presents a linear reaction kinetics but with a smaller
reaction rate compared to the second section because of a larger
exothermic effect for the hydrolysis reaction of LiH powder.
[1] Peter J. Turchi, Propulsion techniques: action and reaction. AIAA,
ISBN978-1-56347-115-5, 1998, PP.339-341.
[2] M. Olszewski, M. Siman-Tov, "Development of Encapsulated Lithium
Hydride Thermal Energy Storage," Oak Ridge National Lab. Report.
CONF-890815-1 (DE89 010169), 1989.
[3] J. Lu, Z. Z. Fang, H. Y. Sohn, "A hybrid method for hydrogen storage and
generation from water," Journal of Power Sources, vol. 172, no. 2, pp.
853-858, 2007.
[4] J. F. McLaughlin, S S.Cristy, "Composition of corrosion films on
lithium hydride surfaces after exposure to air," Oak Ridge Y-12 Plant
Report, Y-1929, Oak Ridge, TN, 1974.
[5] S. S. Cristy, "SIMS depth profiling of an insulating air-sensitive
material," Oak Ridge Y-12 Plant Report, Y/DW-725, Oak Ridge Y-12
Plant, 1987.
[6] J. Tanski, "Analysis of a new reaction mechanism for hydrolysis of LiH,"
Los Alamos National Laboratory Report, LAUR-00-5324, Los Alamos
National Laboratory, 2000.
[7] M. Balooch, L. Dinh, D. Calef, "The reaction kinetics of lithium salt with
water vapor," J. Nucl. Mater., vol. 303, no. 2-3, pp. 200-209, 2002.
[8] C. L. Haertling, R. J. Hanrahan, R. Smith, "A literature review of
reactions and kinetics of lithium hydride hydrolysis," J. Nucl. Mater., vol.
349, pp. 195-233, 2006.
[9] C. L. Haertling, R. J. Hanrahan, J. R. Tesmer, "Hydrolysis studies of
polycrystalline lithium hydride," J Phys Chem C, vol. 111, no. 4,
pp.1716-1724, 2007.
[10] K. V. Wilson, B. M. Patterson, J. Phillips, "Microbalance study of the
corrosion kinetics of lithium hydride by water," J. Nucl. Mater., vol. 374,
pp. 229-240, 2008.
[11] R.P. Awbery, D.A. Broughton, S.C. Tsang, "In situ observation of lithium
hydride hydrolysis by DRIFT spectroscopy," J. Nucl. Mater., vol. 373, pp.
94-102, 2008.
[12] G. L. Powell, "The Spectropus System: Remote Sampling Accessories for
Reflectance, Emission, and Transmission Analysis Using Fourier
Transform Infrared Spectroscopy," Appl. Spectrosc., vol. 46, no. 1, pp.
111-125, 1992.
[13] T. Osaka, I. Shindo, "Infrared reflectivity and Raman scattering of
lithium oxide single crystals," Solid State Communications, vol. 51, no. 6,
pp.421-424, 1984.
[14] Y. Ishii, T. Nagasaki, "Temperature dependence of the Raman spectrum
in lithium oxide single crystal," J. Am. Ceram. Soc., vol. 74, pp.
2324-2326, 1991.
[15] Sa Xiao, Mao-bing Shuai, Ming-fu Chu, Qi-shou Li, Huo-gen Huang,
"Li2O thickness and water concentration effects on LiH hydrolysis
kinetics by gravimetry and Raman spectroscopy," J. Nucl. Mater.
Submitted for publication.
[16] C. Maupoix, J. L. Houzelot, E. Sciora, G. Gaillard, S. Charton, L. Saviot,
F. Bernard, "Experimental investigation of the grain size dependence of
the hydrolysis of LiH powder," Powder Technology, vol. 208, pp.
318-323, 2011.
[1] Peter J. Turchi, Propulsion techniques: action and reaction. AIAA,
ISBN978-1-56347-115-5, 1998, PP.339-341.
[2] M. Olszewski, M. Siman-Tov, "Development of Encapsulated Lithium
Hydride Thermal Energy Storage," Oak Ridge National Lab. Report.
CONF-890815-1 (DE89 010169), 1989.
[3] J. Lu, Z. Z. Fang, H. Y. Sohn, "A hybrid method for hydrogen storage and
generation from water," Journal of Power Sources, vol. 172, no. 2, pp.
853-858, 2007.
[4] J. F. McLaughlin, S S.Cristy, "Composition of corrosion films on
lithium hydride surfaces after exposure to air," Oak Ridge Y-12 Plant
Report, Y-1929, Oak Ridge, TN, 1974.
[5] S. S. Cristy, "SIMS depth profiling of an insulating air-sensitive
material," Oak Ridge Y-12 Plant Report, Y/DW-725, Oak Ridge Y-12
Plant, 1987.
[6] J. Tanski, "Analysis of a new reaction mechanism for hydrolysis of LiH,"
Los Alamos National Laboratory Report, LAUR-00-5324, Los Alamos
National Laboratory, 2000.
[7] M. Balooch, L. Dinh, D. Calef, "The reaction kinetics of lithium salt with
water vapor," J. Nucl. Mater., vol. 303, no. 2-3, pp. 200-209, 2002.
[8] C. L. Haertling, R. J. Hanrahan, R. Smith, "A literature review of
reactions and kinetics of lithium hydride hydrolysis," J. Nucl. Mater., vol.
349, pp. 195-233, 2006.
[9] C. L. Haertling, R. J. Hanrahan, J. R. Tesmer, "Hydrolysis studies of
polycrystalline lithium hydride," J Phys Chem C, vol. 111, no. 4,
pp.1716-1724, 2007.
[10] K. V. Wilson, B. M. Patterson, J. Phillips, "Microbalance study of the
corrosion kinetics of lithium hydride by water," J. Nucl. Mater., vol. 374,
pp. 229-240, 2008.
[11] R.P. Awbery, D.A. Broughton, S.C. Tsang, "In situ observation of lithium
hydride hydrolysis by DRIFT spectroscopy," J. Nucl. Mater., vol. 373, pp.
94-102, 2008.
[12] G. L. Powell, "The Spectropus System: Remote Sampling Accessories for
Reflectance, Emission, and Transmission Analysis Using Fourier
Transform Infrared Spectroscopy," Appl. Spectrosc., vol. 46, no. 1, pp.
111-125, 1992.
[13] T. Osaka, I. Shindo, "Infrared reflectivity and Raman scattering of
lithium oxide single crystals," Solid State Communications, vol. 51, no. 6,
pp.421-424, 1984.
[14] Y. Ishii, T. Nagasaki, "Temperature dependence of the Raman spectrum
in lithium oxide single crystal," J. Am. Ceram. Soc., vol. 74, pp.
2324-2326, 1991.
[15] Sa Xiao, Mao-bing Shuai, Ming-fu Chu, Qi-shou Li, Huo-gen Huang,
"Li2O thickness and water concentration effects on LiH hydrolysis
kinetics by gravimetry and Raman spectroscopy," J. Nucl. Mater.
Submitted for publication.
[16] C. Maupoix, J. L. Houzelot, E. Sciora, G. Gaillard, S. Charton, L. Saviot,
F. Bernard, "Experimental investigation of the grain size dependence of
the hydrolysis of LiH powder," Powder Technology, vol. 208, pp.
318-323, 2011.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:58696", author = "M. B. Shuai and S. Xiao and Q. S. Li and M. F. Chu and X. F. Yang", title = "Hydrolysis Characteristics of Polycrystalline Lithium Hydride Powders and Sintered Bulk", abstract = "Ambient hydrolysis products in moist air and
hydrolysis kinetics in argon with humidity of RH1.5% for
polycrystalline LiH powders and sintered bulks were investigated by
X-ray diffraction, Raman spectroscopy and gravimetry. The results
showed that the hydrolysis products made up a layered structure of
LiOH•H2O/LiOH/Li2O from surface of the sample to inside. In low
humid argon atmosphere, the primary hydrolysis product was Li2O
rather than LiOH. The hydrolysis kinetic curves of LiH bulks present a
paralinear shape, which could be explained by the “Layer Diffusion
Control" model. While a three-stage hydrolysis kinetic profile was
observed for LiH powders under the same experimental conditions.
The first two sections were similar to that of the bulk samples, and the
third section also presents a linear reaction kinetics but with a smaller
reaction rate compared to the second section because of a larger
exothermic effect for the hydrolysis reaction of LiH powder.", keywords = "Hydrolysis, lithium compound, polycrystallinelithium hydride", volume = "5", number = "11", pages = "1024-5", }