LrgpV1, Main, Exploration, bibRecord, 000C17

Experimental investigation of the grain size dependence of the hydrolysis of LiH powder

Identifieur interne : 000C17 ( Main/Exploration ); précédent : 000C16; suivant : 000C18

Experimental investigation of the grain size dependence of the hydrolysis of LiH powder

Auteurs : C. Maupoix [France] ; J. L. Houzelot [France] ; E. Sciora [France] ; G. Gaillard [France] ; S. Charton [France] ; L. Saviot [France] ; F. Bernard [France]

Source :

Powder technology [ 0032-5910 ] ; 2011.

RBID : Pascal:11-0216244

Descripteurs français

Pascal (Inist)
- Grosseur grain, Effet dimensionnel, Hydrolyse, Poudre, Diffraction RX, Gravimétrie, Pression partielle, Dimension particule, Modélisation, Taux conversion, Réaction chimique.

English descriptors

KwdEn :
- Chemical reaction, Conversion rate, Grain size, Gravimetric analysis, Hydrolysis, Modeling, Partial pressure, Particle size, Powder, Size effect, X ray diffraction.

Abstract

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.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000205
to stream PascalFrancis, to step Curation: 000906
to stream PascalFrancis, to step Checkpoint: 000190
to stream Main, to step Merge: 000D47
to stream Main, to step Curation: 000C17

Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chemical reaction</term>
<term>Conversion rate</term>
<term>Grain size</term>
<term>Gravimetric analysis</term>
<term>Hydrolysis</term>
<term>Modeling</term>
<term>Partial pressure</term>
<term>Particle size</term>
<term>Powder</term>
<term>Size effect</term>
<term>X ray diffraction</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Grosseur grain</term>
<term>Effet dimensionnel</term>
<term>Hydrolyse</term>
<term>Poudre</term>
<term>Diffraction RX</term>
<term>Gravimétrie</term>
<term>Pression partielle</term>
<term>Dimension particule</term>
<term>Modélisation</term>
<term>Taux conversion</term>
<term>Réaction chimique</term>
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<front><div type="abstract" xml:lang="en">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.H<sub>2</sub>
O 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.</div>
</front>
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Experimental investigation of the grain size dependence of the hydrolysis of LiH powder

Experimental investigation of the grain size dependence of the hydrolysis of LiH powder

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Abstract

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