6533b828fe1ef96bd12883f1
RESEARCH PRODUCT
Experimental investigation of the grain size dependence of the hydrolysis of LiH powder
Frédéric BernardJ.l. HouzelotC. MaupoixC. MaupoixSophie ChartonE. ScioraLucien SaviotG. Gaillardsubject
General Chemical Engineering[ PHYS.COND.CM-MS ] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Analytical chemistrychemistry.chemical_element02 engineering and technologyPartial pressure010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesChemical reaction0104 chemical scienceschemistry.chemical_compoundHydrolysischemistryLithium hydride[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]HydroxideGravimetric analysisLithiumParticle size0210 nano-technologydescription
International audience; The hydrolysis reaction of LiH powder has been investigated in order to determine the products, rates and mechanisms of this reaction and the influence of the experimental parameters. Raman spectroscopy, X-ray diffraction and gravimetric analysis were used. It was shown that the product of hydrolysis was the hydroxide of lithium (LiOH) for low partial pressure of water (≈50 Pa) and LiOH*H2O for a higher partial pressure of water (>2000 Pa). Moreover, data obtained using gravimetric analysis inside a glove box containing a controlled partial pressure of water (500 ppmv/50 Pa at 25 °C) were used to determine the rate of the reaction versus particle size. The experimental results were consistent with the shrinking core model showing that initially, the conversion rate is controlled by the chemical reaction.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-03-25 |