Catalyst made of NiMo sulfide supported on hydroxyapatite: Influence of Al addition on support properties and on the catalytic conversion of thiophene
Identifieur interne : 000243 ( France/Analysis ); précédent : 000242; suivant : 000244Catalyst made of NiMo sulfide supported on hydroxyapatite: Influence of Al addition on support properties and on the catalytic conversion of thiophene
Auteurs : N. E. El Azarifi [Maroc] ; A. El Ouassouli [Maroc] ; M. Lakhdar [Maroc] ; A. Ezzamarty [Maroc] ; C. Moreau [France] ; A. Travert [France] ; J. Leglise [France]Source :
- Journal de physique. IV [ 1155-4339 ] ; 2005.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
A hydroxyapatite and two apatites enriched with alumina have been synthesized to support NiMo sulfide. Hydroxyapatites are efficient supports of NiMo sulfide catalyst for desulfurization of thiophene. Addition of Al ions during the preparation results in an intimate mixture of crystalline apatite and amorphous AlPO4. This leads to an important increase in surface area and porous volume that is beneficial to the catalytic activity. The highest activity is obtained with calcium-deficient apatite because the presence of apatitic HPO42- groups or related surface defects is required to improve the dispersion of the Mo ions in the oxidic precursor. The apatitic catalysts are superior to commercial NiMOP/Al2O3 catalysts, which makes NiMo/apatite a good candidate for hydrotreating.
Affiliations:
- France, Maroc
- Basse-Normandie, Languedoc-Roussillon, Occitanie (région administrative), Région Normandie
- Caen, Montpellier
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Pascal:05-0363564Le document en format XML
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<country>France</country>
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<author><name sortKey="Leglise, J" sort="Leglise, J" uniqKey="Leglise J" first="J." last="Leglise">J. Leglise</name>
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<settlement type="city">Caen</settlement>
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<series><title level="j" type="main">Journal de physique. IV</title>
<title level="j" type="abbreviated">J. phys., IV</title>
<idno type="ISSN">1155-4339</idno>
<imprint><date when="2005">2005</date>
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<seriesStmt><title level="j" type="main">Journal de physique. IV</title>
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<idno type="ISSN">1155-4339</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Apatite</term>
<term>Desulfurization</term>
<term>Five membered ring</term>
<term>Heterogeneous catalysis</term>
<term>Hydroxyapatite</term>
<term>Infrared spectrometry</term>
<term>Molybdenum Sulfides</term>
<term>Nickel Sulfides</term>
<term>Sulfur heterocycle</term>
<term>Supported catalyst</term>
<term>Ternary compound</term>
<term>Thiophene</term>
<term>X ray diffraction</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Catalyseur sur support</term>
<term>Catalyse hétérogène</term>
<term>Nickel Sulfure</term>
<term>Molybdène Sulfure</term>
<term>Composé ternaire</term>
<term>Apatite hydroxylée</term>
<term>Apatite</term>
<term>Désulfuration</term>
<term>Thiophène</term>
<term>Hétérocycle soufre</term>
<term>Cycle 5 chaînons</term>
<term>Diffraction RX</term>
<term>Spectrométrie IR</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">A hydroxyapatite and two apatites enriched with alumina have been synthesized to support NiMo sulfide. Hydroxyapatites are efficient supports of NiMo sulfide catalyst for desulfurization of thiophene. Addition of Al ions during the preparation results in an intimate mixture of crystalline apatite and amorphous AlPO<sub>4</sub>
. This leads to an important increase in surface area and porous volume that is beneficial to the catalytic activity. The highest activity is obtained with calcium-deficient apatite because the presence of apatitic HPO<sub>4</sub>
<sup>2-</sup>
groups or related surface defects is required to improve the dispersion of the Mo ions in the oxidic precursor. The apatitic catalysts are superior to commercial NiMOP/Al<sub>2</sub>
O<sub>3</sub>
catalysts, which makes NiMo/apatite a good candidate for hydrotreating.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
<li>Maroc</li>
</country>
<region><li>Basse-Normandie</li>
<li>Languedoc-Roussillon</li>
<li>Occitanie (région administrative)</li>
<li>Région Normandie</li>
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<li>Montpellier</li>
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<tree><country name="Maroc"><noRegion><name sortKey="El Azarifi, N E" sort="El Azarifi, N E" uniqKey="El Azarifi N" first="N. E" last="El Azarifi">N. E. El Azarifi</name>
</noRegion>
<name sortKey="El Ouassouli, A" sort="El Ouassouli, A" uniqKey="El Ouassouli A" first="A." last="El Ouassouli">A. El Ouassouli</name>
<name sortKey="Ezzamarty, A" sort="Ezzamarty, A" uniqKey="Ezzamarty A" first="A." last="Ezzamarty">A. Ezzamarty</name>
<name sortKey="Lakhdar, M" sort="Lakhdar, M" uniqKey="Lakhdar M" first="M." last="Lakhdar">M. Lakhdar</name>
</country>
<country name="France"><region name="Occitanie (région administrative)"><name sortKey="Moreau, C" sort="Moreau, C" uniqKey="Moreau C" first="C." last="Moreau">C. Moreau</name>
</region>
<name sortKey="Leglise, J" sort="Leglise, J" uniqKey="Leglise J" first="J." last="Leglise">J. Leglise</name>
<name sortKey="Travert, A" sort="Travert, A" uniqKey="Travert A" first="A." last="Travert">A. Travert</name>
</country>
</tree>
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</record>
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