NickelMaghrebV1, France, Analysis, bibRecord, 000218

Benzaldehyde hydrogenation over supported nickel catalysts

Identifieur interne : 000218 ( France/Analysis ); précédent : 000217; suivant : 000219

Benzaldehyde hydrogenation over supported nickel catalysts

Auteurs : A. Saadi [Algérie] ; R. Merabti [Algérie] ; Z. Rassoul [Algérie] ; M. M. Bettahar [France]

Source :

Journal of molecular catalysis. A, Chemical [ 1381-1169 ] ; 2006.

RBID : Pascal:06-0425311

Descripteurs français

Pascal (Inist)
- Benzaldéhyde, Hydrogénation, Catalyseur sur support, Catalyse hétérogène, Support catalyseur, Nickel, Alumine, Silice, Titane oxyde, Cérium Oxyde.
Wicri :
- topic : Nickel.

English descriptors

KwdEn :
- Alumina, Benzaldehyde, Catalyst support, Cerium Oxides, Heterogeneous catalysis, Hydrogenation, Nickel, Silica, Supported catalyst, Titanium oxide.

Abstract

The hydrogenation of benzaldehyde over nickel catalysts supported on Al₂O₃, SiO₂, TiO₂ and CeO₂ was studied at atmospheric pressure in the range temperature of 70-140°C under H₂ flow. They were characterized by their BET surface area, XRD spectra, reducibility properties under H₂. The obtained products were benzylalcohol, toluene, benzene with yields depending on the nature of the support and reaction temperature. Methylcyclohexane was also produced, mainly at low temperature and on Ni/α-Al₂O₃ as catalyst. The products of benzaldehyde hydrogenation (benzylalcohol, toluene and methylcyclohexane) and hydrogenolysis (benzene) were preferentially formed at low/ middle and high reaction temperature respectively. The observed selectivities also suggested the existence of bifunctional sites for both the hydrogenation and hydrogenolysis reactions. These sites were believed to be involved as acidic/cationic centers for the adsorption of the oxygenate molecules and metal center for the hydrogenation or hydrogenolysis step.

Affiliations:

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to stream Main, to step Exploration: 000728
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Pascal:06-0425311

Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Benzaldehyde hydrogenation over supported nickel catalysts</title>
<author><name sortKey="Saadi, A" sort="Saadi, A" uniqKey="Saadi A" first="A." last="Saadi">A. Saadi</name>
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<country>Algérie</country>
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<author><name sortKey="Merabti, R" sort="Merabti, R" uniqKey="Merabti R" first="R." last="Merabti">R. Merabti</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Chimie du Gaz Naturel, Faculté de Chimie, USTHB, BP32 El-Alia</s1>
<s2>16111 Bab-Ezzouar</s2>
<s3>DZA</s3>
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<author><name sortKey="Rassoul, Z" sort="Rassoul, Z" uniqKey="Rassoul Z" first="Z." last="Rassoul">Z. Rassoul</name>
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<s2>16111 Bab-Ezzouar</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
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<country>Algérie</country>
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<author><name sortKey="Bettahar, M M" sort="Bettahar, M M" uniqKey="Bettahar M" first="M. M." last="Bettahar">M. M. Bettahar</name>
<affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire de Catalyse Hétérogène, UMR-CNRS 7565, Université Henri Poincaré, Nancy-I, Faculté des Sciences, BP 239</s1>
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<sZ>4 aut.</sZ>
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<country>France</country>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alumina</term>
<term>Benzaldehyde</term>
<term>Catalyst support</term>
<term>Cerium Oxides</term>
<term>Heterogeneous catalysis</term>
<term>Hydrogenation</term>
<term>Nickel</term>
<term>Silica</term>
<term>Supported catalyst</term>
<term>Titanium oxide</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Benzaldéhyde</term>
<term>Hydrogénation</term>
<term>Catalyseur sur support</term>
<term>Catalyse hétérogène</term>
<term>Support catalyseur</term>
<term>Nickel</term>
<term>Alumine</term>
<term>Silice</term>
<term>Titane oxyde</term>
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<front><div type="abstract" xml:lang="en">The hydrogenation of benzaldehyde over nickel catalysts supported on Al<sub>2</sub>
O<sub>3</sub>
, SiO<sub>2</sub>
, TiO<sub>2</sub>
 and CeO<sub>2</sub>
 was studied at atmospheric pressure in the range temperature of 70-140°C under H<sub>2</sub>
 flow. They were characterized by their BET surface area, XRD spectra, reducibility properties under H<sub>2</sub>
. The obtained products were benzylalcohol, toluene, benzene with yields depending on the nature of the support and reaction temperature. Methylcyclohexane was also produced, mainly at low temperature and on Ni/α-Al<sub>2</sub>
O<sub>3</sub>
 as catalyst. The products of benzaldehyde hydrogenation (benzylalcohol, toluene and methylcyclohexane) and hydrogenolysis (benzene) were preferentially formed at low/ middle and high reaction temperature respectively. The observed selectivities also suggested the existence of bifunctional sites for both the hydrogenation and hydrogenolysis reactions. These sites were believed to be involved as acidic/cationic centers for the adsorption of the oxygenate molecules and metal center for the hydrogenation or hydrogenolysis step.</div>
</front>
</TEI>
<affiliations><list><country><li>Algérie</li>
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<li>Vandœuvre-lès-Nancy</li>
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<tree><country name="Algérie"><noRegion><name sortKey="Saadi, A" sort="Saadi, A" uniqKey="Saadi A" first="A." last="Saadi">A. Saadi</name>
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<name sortKey="Merabti, R" sort="Merabti, R" uniqKey="Merabti R" first="R." last="Merabti">R. Merabti</name>
<name sortKey="Rassoul, Z" sort="Rassoul, Z" uniqKey="Rassoul Z" first="Z." last="Rassoul">Z. Rassoul</name>
</country>
<country name="France"><region name="Grand Est"><name sortKey="Bettahar, M M" sort="Bettahar, M M" uniqKey="Bettahar M" first="M. M." last="Bettahar">M. M. Bettahar</name>
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Benzaldehyde hydrogenation over supported nickel catalysts

Benzaldehyde hydrogenation over supported nickel catalysts

Source :

Descripteurs français

English descriptors

Abstract

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

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri