ThuliumV1, Main, Exploration, bibRecord, 002695

Study of some ternary and quaternary systems based on γ-Ce2S3 using oxalate complexes: stabilization and coloration

Identifieur interne : 002695 ( Main/Exploration ); précédent : 002694; suivant : 002696

Study of some ternary and quaternary systems based on γ-Ce2S3 using oxalate complexes: stabilization and coloration

Auteurs : S. Romero [France] ; A. Mosset [France] ; J. C Trombe [France]

Source :

Journal of Alloys and Compounds [ 0925-8388 ] ; 1998.

RBID : ISTEX:DE9586F21F048EF88D970D4205F878E8877DF1CC

English descriptors

Abstract

Abstract: In the ternary system, Ce–Na–S, starting with oxalate precursors and using H2S as sulfurizing agent, the sodium doped γ-Ce2S3 becomes the main phase for Na/Ce=0.1 and is pure for Na/Ce=0.2 at 700°C. The addition of dysprosium (oxalate) to this system allows the stabilization of the γ-phase as long as the atomic ratios take the values Dy/Ce≤2 and Na/[Ce+Dy]≥0.1, and the temperature of treatment is equal or higher than 900°C. The secondary phases are the oxysulfide Ce2−xDyxO2S and the mixed sulfide NaDyS2. By substituting erbium for dysprosium the amount of secondary phases increases. To improve the coloration of the sulfide, the oxalate precursor must undergo a thermal treatment in air, before its sulfurization, in order to decrease the carbon amount of the sulfides. The addition of lanthanide(III) to the ternary system modifies slightly the color of the resulting sulfide.

Url:

https://api.istex.fr/document/DE9586F21F048EF88D970D4205F878E8877DF1CC/fulltext/pdf

DOI: 10.1016/S0925-8388(98)00006-1

Affiliations:

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

to stream Istex, to step Corpus: 003126
to stream Istex, to step Curation: 003126
to stream Istex, to step Checkpoint: 000C70
to stream Main, to step Merge: 002861
to stream Main, to step Curation: 002695

Le document en format XML

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<author><name sortKey="Mosset, A" sort="Mosset, A" uniqKey="Mosset A" first="A" last="Mosset">A. Mosset</name>
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<author><name sortKey="Trombe, J C" sort="Trombe, J C" uniqKey="Trombe J" first="J. C" last="Trombe">J. C Trombe</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acta crystallogr</term>
<term>Alkali metal</term>
<term>Alloys comp</term>
<term>Atomic ratio</term>
<term>Atomic ratio ranges</term>
<term>Best stabilization</term>
<term>Carbon amount</term>
<term>Cerium</term>
<term>Cerium oxalate</term>
<term>Conduction band</term>
<term>Corresponding results</term>
<term>Cubic phase</term>
<term>Different temperatures</term>
<term>Diffraction powder patterns</term>
<term>Doping</term>
<term>Dysprosium</term>
<term>Further heating</term>
<term>Grain size</term>
<term>Heavy lanthanide</term>
<term>Heavy lanthanides</term>
<term>High temperature</term>
<term>Higher temperatures</term>
<term>Higher values</term>
<term>Lanthanide</term>
<term>Lanthanide contraction</term>
<term>Last temperature</term>
<term>Last value</term>
<term>Lattice constants</term>
<term>Lattice parameters</term>
<term>Lower wavelengths</term>
<term>Maximum limit</term>
<term>Nadys</term>
<term>Oxalate</term>
<term>Oxalate ligand</term>
<term>Oxalate precursor</term>
<term>Oxalate precursors</term>
<term>Precursor</term>
<term>Quaternary</term>
<term>Quaternary system</term>
<term>Quaternary systems</term>
<term>Residual carbon</term>
<term>Respective proportions</term>
<term>Romero</term>
<term>Same precursor</term>
<term>Secondary phases</term>
<term>Small amount</term>
<term>Sodium oxalate</term>
<term>Spectral curves</term>
<term>Sulfurization</term>
<term>Sulfurization process</term>
<term>Ternary</term>
<term>Ternary system</term>
<term>Thermal treatment</term>
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<term>Atomic ratio ranges</term>
<term>Best stabilization</term>
<term>Carbon amount</term>
<term>Cerium</term>
<term>Cerium oxalate</term>
<term>Conduction band</term>
<term>Corresponding results</term>
<term>Cubic phase</term>
<term>Different temperatures</term>
<term>Diffraction powder patterns</term>
<term>Doping</term>
<term>Dysprosium</term>
<term>Further heating</term>
<term>Grain size</term>
<term>Heavy lanthanide</term>
<term>Heavy lanthanides</term>
<term>High temperature</term>
<term>Higher temperatures</term>
<term>Higher values</term>
<term>Lanthanide</term>
<term>Lanthanide contraction</term>
<term>Last temperature</term>
<term>Last value</term>
<term>Lattice constants</term>
<term>Lattice parameters</term>
<term>Lower wavelengths</term>
<term>Maximum limit</term>
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<term>Oxalate ligand</term>
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<term>Oxalate precursors</term>
<term>Precursor</term>
<term>Quaternary</term>
<term>Quaternary system</term>
<term>Quaternary systems</term>
<term>Residual carbon</term>
<term>Respective proportions</term>
<term>Romero</term>
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<term>Secondary phases</term>
<term>Small amount</term>
<term>Sodium oxalate</term>
<term>Spectral curves</term>
<term>Sulfurization</term>
<term>Sulfurization process</term>
<term>Ternary</term>
<term>Ternary system</term>
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<front><div type="abstract" xml:lang="en">Abstract: In the ternary system, Ce–Na–S, starting with oxalate precursors and using H2S as sulfurizing agent, the sodium doped γ-Ce2S3 becomes the main phase for Na/Ce=0.1 and is pure for Na/Ce=0.2 at 700°C. The addition of dysprosium (oxalate) to this system allows the stabilization of the γ-phase as long as the atomic ratios take the values Dy/Ce≤2 and Na/[Ce+Dy]≥0.1, and the temperature of treatment is equal or higher than 900°C. The secondary phases are the oxysulfide Ce2−xDyxO2S and the mixed sulfide NaDyS2. By substituting erbium for dysprosium the amount of secondary phases increases. To improve the coloration of the sulfide, the oxalate precursor must undergo a thermal treatment in air, before its sulfurization, in order to decrease the carbon amount of the sulfides. The addition of lanthanide(III) to the ternary system modifies slightly the color of the resulting sulfide.</div>
</front>
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Study of some ternary and quaternary systems based on γ-Ce2S3 using oxalate complexes: stabilization and coloration

Study of some ternary and quaternary systems based on γ-Ce2S3 using oxalate complexes: stabilization and coloration

Source :

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri