NickelMaghrebV1, Main, Exploration, bibRecord, 000A15

Decomposition thermique et etude vibrationnelle de NiNa4(P3O9)2.6H2O

Identifieur interne : 000A15 ( Main/Exploration ); précédent : 000A14; suivant : 000A16

Decomposition thermique et etude vibrationnelle de NiNa4(P3O9)2.6H2O

Auteurs : K. Sbai [Maroc] ; A. Atibi [Maroc] ; A. Charaf [Maroc] ; M. Radid [Maroc] ; Amor Jouini [Tunisie]

Source :

Journal of thermal analysis and calorimetry [ 1388-6150 ] ; 2002.

RBID : Pascal:02-0569748

Descripteurs français

Pascal (Inist)
- Pyrolyse, Nickel Métaphosphate, Sodium Métaphosphate, Phosphate cyclique, Hydrate, Spectrométrie Raman, Spectrométrie IR, Diffraction RX, Analyse thermique, Analyse thermique différentielle, Thermogravimétrie, NiNa4(P3O9)2, Na Ni O P, Cyclotriphosphate.

English descriptors

KwdEn :
- Cyclophosphate, Differential thermal analysis, Hydrates, Infrared spectrometry, Nickel Metaphosphates, Pyrolysis, Raman spectrometry, Sodium Metaphosphates, Thermal analysis, Thermogravimetry, X ray diffraction.

Abstract

We have studied the dehydration and the calcination under atmospheric pressure of cyclo-triphosphate tetrahydrate of nickel and sodium, NiNa₄(P₃O₉)₂.6H₂O, between 25 and 700°C by thermal analyses (TG, DTA) infrared spectrometry and X-ray diffraction. This study allows us the identification and the crystallographic characterization of a new phase, NiNa₄(PO₃)₆, obtained between 350 and 450°C. NiNa₄(PO₃)₆ crystallizes in the triclinic system, P_-1, with the following unit cell parameters a=6.157(3) Å, b=6.820(6) A, c=10.918(6) A, α=80.21(5)°, β=97.80(9)°, γ=113.49(3)°, V=409.8 Å³, Z=1, M(19)=25 and F(19)=48 (0.0095; 42). The calcination of NiNa₄(PO₃)₆, between 500 and 600°C, leads to a mixture of long-chain polyphosphates NiNa(PO₃)₃ and NaPO₃. The kinetic characteristics of the dehydration of NiNa₄(P₃O₉)₂.6H₂O were determined and discussed. The vibrational spectrum of the title compound, NiNa₄(P₃O₉)₂.6H₂O, was interpreted in the domain of the stretching vibrations of the P₃O₉ rings, on the basis of its crystalline structure and in the light of the calculation of the normal IR frequencies of the P₃O₉ ring with D_3h symmetry.

Affiliations:

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Le document en format XML

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(P<sub>3</sub>
O<sub>9</sub>
)<sub>2</sub>
.6H<sub>2</sub>
O</title>
<author><name sortKey="Sbai, K" sort="Sbai, K" uniqKey="Sbai K" first="K." last="Sbai">K. Sbai</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="fr" level="a">Decomposition thermique et etude vibrationnelle de NiNa<sub>4</sub>
(P<sub>3</sub>
O<sub>9</sub>
)<sub>2</sub>
.6H<sub>2</sub>
O</title>
<author><name sortKey="Sbai, K" sort="Sbai, K" uniqKey="Sbai K" first="K." last="Sbai">K. Sbai</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherches de Chimie-Physique Générale, Faculté des Sciences Ben M'Sik, B.P. 7955</s1>
<s2>Casablanca</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Maroc</country>
<wicri:noRegion>Casablanca</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Atibi, A" sort="Atibi, A" uniqKey="Atibi A" first="A." last="Atibi">A. Atibi</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherches de Chimie-Physique Générale, Faculté des Sciences Ben M'Sik, B.P. 7955</s1>
<s2>Casablanca</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Maroc</country>
<wicri:noRegion>Casablanca</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Charaf, A" sort="Charaf, A" uniqKey="Charaf A" first="A." last="Charaf">A. Charaf</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherches de Chimie-Physique Générale, Faculté des Sciences Ben M'Sik, B.P. 7955</s1>
<s2>Casablanca</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Maroc</country>
<wicri:noRegion>Casablanca</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Radid, M" sort="Radid, M" uniqKey="Radid M" first="M." last="Radid">M. Radid</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherches de Chimie-Physique Générale, Faculté des Sciences Ben M'Sik, B.P. 7955</s1>
<s2>Casablanca</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Maroc</country>
<wicri:noRegion>Casablanca</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Jouini, A" sort="Jouini, A" uniqKey="Jouini A" first="A." last="Jouini">Amor Jouini</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratoire de l'Etat Solide, Faculté des Sciences et Techniques, 5000, Route de Kairouan</s1>
<s2>Monastir</s2>
<s3>TUN</s3>
<sZ>5 aut.</sZ>
</inist:fA14>
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<wicri:noRegion>Monastir</wicri:noRegion>
<placeName><settlement type="city">Monastir</settlement>
<region type="region" nuts="2">Gouvernorat de Monastir</region>
</placeName>
<orgName type="university" n="3">Université de Monastir</orgName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Journal of thermal analysis and calorimetry</title>
<title level="j" type="abbreviated">J. therm. anal. calorim.</title>
<idno type="ISSN">1388-6150</idno>
<imprint><date when="2002">2002</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Journal of thermal analysis and calorimetry</title>
<title level="j" type="abbreviated">J. therm. anal. calorim.</title>
<idno type="ISSN">1388-6150</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cyclophosphate</term>
<term>Differential thermal analysis</term>
<term>Hydrates</term>
<term>Infrared spectrometry</term>
<term>Nickel Metaphosphates</term>
<term>Pyrolysis</term>
<term>Raman spectrometry</term>
<term>Sodium Metaphosphates</term>
<term>Thermal analysis</term>
<term>Thermogravimetry</term>
<term>X ray diffraction</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Pyrolyse</term>
<term>Nickel Métaphosphate</term>
<term>Sodium Métaphosphate</term>
<term>Phosphate cyclique</term>
<term>Hydrate</term>
<term>Spectrométrie Raman</term>
<term>Spectrométrie IR</term>
<term>Diffraction RX</term>
<term>Analyse thermique</term>
<term>Analyse thermique différentielle</term>
<term>Thermogravimétrie</term>
<term>NiNa4(P3O9)2</term>
<term>Na Ni O P</term>
<term>Cyclotriphosphate</term>
</keywords>
</textClass>
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<front><div type="abstract" xml:lang="en">We have studied the dehydration and the calcination under atmospheric pressure of cyclo-triphosphate tetrahydrate of nickel and sodium, NiNa<sub>4</sub>
(P<sub>3</sub>
O<sub>9</sub>
)<sub>2</sub>
.6H<sub>2</sub>
O, between 25 and 700°C by thermal analyses (TG, DTA) infrared spectrometry and X-ray diffraction. This study allows us the identification and the crystallographic characterization of a new phase, NiNa<sub>4</sub>
(PO<sub>3</sub>
)<sub>6</sub>
, obtained between 350 and 450°C. NiNa<sub>4</sub>
(PO<sub>3</sub>
)<sub>6</sub>
 crystallizes in the triclinic system, P<sub>-1</sub>
, with the following unit cell parameters a=6.157(3) Å, b=6.820(6) A, c=10.918(6) A, α=80.21(5)°, β=97.80(9)°, γ=113.49(3)°, V=409.8 Å<sup>3</sup>
, Z=1, M(19)=25 and F(19)=48 (0.0095; 42). The calcination of NiNa<sub>4</sub>
(PO<sub>3</sub>
)<sub>6</sub>
, between 500 and 600°C, leads to a mixture of long-chain polyphosphates NiNa(PO<sub>3</sub>
)<sub>3</sub>
 and NaPO<sub>3</sub>
. The kinetic characteristics of the dehydration of NiNa<sub>4</sub>
(P<sub>3</sub>
O<sub>9</sub>
)<sub>2</sub>
.6H<sub>2</sub>
O were determined and discussed. The vibrational spectrum of the title compound, NiNa<sub>4</sub>
(P<sub>3</sub>
O<sub>9</sub>
)<sub>2</sub>
.6H<sub>2</sub>
O, was interpreted in the domain of the stretching vibrations of the P<sub>3</sub>
O<sub>9</sub>
 rings, on the basis of its crystalline structure and in the light of the calculation of the normal IR frequencies of the P<sub>3</sub>
O<sub>9</sub>
 ring with D<sub>3h</sub>
 symmetry.</div>
</front>
</TEI>
<affiliations><list><country><li>Maroc</li>
<li>Tunisie</li>
</country>
<region><li>Gouvernorat de Monastir</li>
</region>
<settlement><li>Monastir</li>
</settlement>
<orgName><li>Université de Monastir</li>
</orgName>
</list>
<tree><country name="Maroc"><noRegion><name sortKey="Sbai, K" sort="Sbai, K" uniqKey="Sbai K" first="K." last="Sbai">K. Sbai</name>
</noRegion>
<name sortKey="Atibi, A" sort="Atibi, A" uniqKey="Atibi A" first="A." last="Atibi">A. Atibi</name>
<name sortKey="Charaf, A" sort="Charaf, A" uniqKey="Charaf A" first="A." last="Charaf">A. Charaf</name>
<name sortKey="Radid, M" sort="Radid, M" uniqKey="Radid M" first="M." last="Radid">M. Radid</name>
</country>
<country name="Tunisie"><region name="Gouvernorat de Monastir"><name sortKey="Jouini, A" sort="Jouini, A" uniqKey="Jouini A" first="A." last="Jouini">Amor Jouini</name>
</region>
</country>
</tree>
</affiliations>
</record>

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Decomposition thermique et etude vibrationnelle de NiNa4(P3O9)2.6H2O

Decomposition thermique et etude vibrationnelle de NiNa4(P3O9)2.6H2O

Source :

Descripteurs français

English descriptors

Abstract

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

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