CobaltMaghrebV1, Main, Exploration, bibRecord, 000940

Oxidative dehydrogenation of ethane and propane over Ca-Co-P catalysts

Identifieur interne : 000940 ( Main/Exploration ); précédent : 000939; suivant : 000941

Oxidative dehydrogenation of ethane and propane over Ca-Co-P catalysts

Auteurs : A. Aaddane [Maroc] ; M. Kacimi [Maroc] ; M. Ziyad [Maroc]

Source :

Journal de physique. IV [ 1155-4339 ] ; 2005.

RBID : Pascal:05-0362649

Descripteurs français

Pascal (Inist)
- Oxydation, Déshydrogénation, Ethane, Propane, Alcane, Hydrocarbure, Calcium Phosphate, Cobalt Phosphate, Composé quaternaire, Métal transition Composé, Catalyse hétérogène.
Wicri :
- topic : Propane, Hydrocarbure.

English descriptors

KwdEn :
- Alkane, Calcium Phosphates, Cobalt Phosphates, Dehydrogenation, Ethane, Heterogeneous catalysis, Hydrocarbon, Oxidation, Propane, Quaternary compound, Transition metal Compounds.

Abstract

Different compositions of calcium-cobalt phosphate Ca_3-xCo_x(PO₄)₂ (0≤x≤3) were synthesized by the precipitation method. The X-ray diffraction patterns showed that in the range 0 ≤x≤0.3 the solid displays a whitlockite-type structure which belongs to rhombohedral symmetry with the space group R3c (Z = 6). U.V-visible investigations showed that Co²⁺ ions occupy the M(5) sites of the phosphate. The same technique revealed that all cobalt cations exist under the +II oxidation state. Pure tricalcium phosphate β-Ca₃(PO₄)₂ was found inactive in the ODH reactions of ethane and propane. An increase of Co²⁺ concentration in the catalysts improved the performances.

Affiliations:

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

to stream PascalFrancis, to step Corpus: 000182
to stream PascalFrancis, to step Curation: 000113
to stream PascalFrancis, to step Checkpoint: 000181
to stream Main, to step Merge: 000951
to stream Main, to step Curation: 000940

Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alkane</term>
<term>Calcium Phosphates</term>
<term>Cobalt Phosphates</term>
<term>Dehydrogenation</term>
<term>Ethane</term>
<term>Heterogeneous catalysis</term>
<term>Hydrocarbon</term>
<term>Oxidation</term>
<term>Propane</term>
<term>Quaternary compound</term>
<term>Transition metal Compounds</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Oxydation</term>
<term>Déshydrogénation</term>
<term>Ethane</term>
<term>Propane</term>
<term>Alcane</term>
<term>Hydrocarbure</term>
<term>Calcium Phosphate</term>
<term>Cobalt Phosphate</term>
<term>Composé quaternaire</term>
<term>Métal transition Composé</term>
<term>Catalyse hétérogène</term>
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<front><div type="abstract" xml:lang="en">Different compositions of calcium-cobalt phosphate Ca<sub>3-x</sub>
Co<sub>x</sub>
(PO<sub>4</sub>
)<sub>2</sub>
 (0≤x≤3) were synthesized by the precipitation method. The X-ray diffraction patterns showed that in the range 0 ≤x≤0.3 the solid displays a whitlockite-type structure which belongs to rhombohedral symmetry with the space group R3c (Z = 6). U.V-visible investigations showed that Co<sup>2+</sup>
 ions occupy the M(5) sites of the phosphate. The same technique revealed that all cobalt cations exist under the +II oxidation state. Pure tricalcium phosphate β-Ca<sub>3</sub>
(PO<sub>4</sub>
)<sub>2</sub>
 was found inactive in the ODH reactions of ethane and propane. An increase of Co<sup>2+</sup>
 concentration in the catalysts improved the performances.</div>
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<affiliations><list><country><li>Maroc</li>
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<tree><country name="Maroc"><region name="Rabat-Salé-Kénitra"><name sortKey="Aaddane, A" sort="Aaddane, A" uniqKey="Aaddane A" first="A." last="Aaddane">A. Aaddane</name>
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Oxidative dehydrogenation of ethane and propane over Ca-Co-P catalysts

Oxidative dehydrogenation of ethane and propane over Ca-Co-P catalysts

Source :

Descripteurs français

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