Catalytic behaviour of cobalt exchanged hydroxyapatite in the oxidative dehydrogenation of ethane
Identifieur interne : 000196 ( France/Analysis ); précédent : 000195; suivant : 000197Catalytic behaviour of cobalt exchanged hydroxyapatite in the oxidative dehydrogenation of ethane
Auteurs : K. Elkabouss [Maroc, France] ; M. Kacimi [Maroc] ; M. Ziyad [Maroc] ; F. Bozon-Verduraz [France]Source :
- Journal de physique. IV [ 1155-4339 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Hydrocarbure.
English descriptors
- KwdEn :
Abstract
Several samples of exchanged cobalt/calcium (Co2+/Ca2+) hydroxyapatite were synthesized and characterised by XRD, IR and UV-visible spectroscopy. The level of Co2+/Ca2+ exchanged was limited to 1.35 wt% of Co and the Co2+ ions incorporated in the phosphate matrix were mainly hosted by octahedral sites. The catalytic activity of these materials was measured in the oxidative dehydrogenation of ethane into ethylene in the 450-550°C range. The global conversion and the ethylene yield increase with temperature and depend upon the cobalt content. They reached 35% and 22% at 550°C respectively for a Co wt% of about 1%.
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Pascal:05-0362696Le document en format XML
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Catalytic behaviour of cobalt exchanged hydroxyapatite in the oxidative dehydrogenation of ethane</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alkane</term>
<term>Calcium Ions</term>
<term>Cobalt Ions</term>
<term>Dehydrogenation</term>
<term>Ethane</term>
<term>Ethylene</term>
<term>Heterogeneous catalysis</term>
<term>Hydrocarbon</term>
<term>Hydroxyapatite</term>
<term>Infrared spectrometry</term>
<term>Ion exchange</term>
<term>Modified material</term>
<term>Oxidation</term>
<term>Transition metal Ions</term>
<term>Ultraviolet visible spectrometry</term>
<term>X ray diffraction</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Apatite hydroxylée</term>
<term>Matériau modifié</term>
<term>Echange ion</term>
<term>Cobalt Ion</term>
<term>Métal transition Ion</term>
<term>Calcium Ion</term>
<term>Diffraction RX</term>
<term>Spectrométrie IR</term>
<term>Spectrométrie UV visible</term>
<term>Catalyse hétérogène</term>
<term>Déshydrogénation</term>
<term>Oxydation</term>
<term>Ethane</term>
<term>Hydrocarbure</term>
<term>Alcane</term>
<term>Ethylène</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Hydrocarbure</term>
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<front><div type="abstract" xml:lang="en">Several samples of exchanged cobalt/calcium (Co<sup>2+</sup>
/Ca<sup>2+</sup>
) hydroxyapatite were synthesized and characterised by XRD, IR and UV-visible spectroscopy. The level of Co<sup>2+</sup>
/Ca<sup>2+</sup>
exchanged was limited to 1.35 wt% of Co and the Co<sup>2+</sup>
ions incorporated in the phosphate matrix were mainly hosted by octahedral sites. The catalytic activity of these materials was measured in the oxidative dehydrogenation of ethane into ethylene in the 450-550°C range. The global conversion and the ethylene yield increase with temperature and depend upon the cobalt content. They reached 35% and 22% at 550°C respectively for a Co wt% of about 1%.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
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<name sortKey="Ziyad, M" sort="Ziyad, M" uniqKey="Ziyad M" first="M." last="Ziyad">M. Ziyad</name>
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<country name="France"><region name="Île-de-France"><name sortKey="Elkabouss, K" sort="Elkabouss, K" uniqKey="Elkabouss K" first="K." last="Elkabouss">K. Elkabouss</name>
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<name sortKey="Bozon Verduraz, F" sort="Bozon Verduraz, F" uniqKey="Bozon Verduraz F" first="F." last="Bozon-Verduraz">F. Bozon-Verduraz</name>
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