NickelMaghrebV1, Main, Exploration, bibRecord, 000590

Effect of pretreatment conditions on the catalytic performance of Ni-Pt-W supported on amorphous silica-alumina catalysts Part 1. Catalysts prepared by a sol-gel method

Identifieur interne : 000590 ( Main/Exploration ); précédent : 000589; suivant : 000591

Effect of pretreatment conditions on the catalytic performance of Ni-Pt-W supported on amorphous silica-alumina catalysts Part 1. Catalysts prepared by a sol-gel method

Auteurs : Yacine Rezgui [Algérie] ; Miloud Guemini [Algérie]

Source :

Applied catalysis. A, General [ 0926-860X ] ; 2008.

RBID : Pascal:08-0178007

Descripteurs français

Pascal (Inist)
- Prétraitement, Réaction catalytique, Support, Silice, Alumine, Catalyseur, Procédé sol gel, Platine, Oxyde de tungstène, Nickel, Isomérisation, Réduction chimique, Acidité, Catalyse hétérogène.
Wicri :
- topic : Platine, Nickel.

English descriptors

KwdEn :
- Acidity, Alumina, Catalyst, Catalytic reaction, Chemical reduction, Heterogeneous catalysis, Isomerization, Nickel, Platinum, Pretreatment, Silica, Sol gel process, Support, Tungsten oxide.

Abstract

In this work, the catalytic behavior of Pt-Ni-WO_x supported on amorphous silica-alumina catalysts, prepared by means of a sol-gel technique was tested by hydroisomerization of n-hexane in a continuous fixed-bed reactor operating at atmospheric pressure. Temperature-programmed desorption of ammonia (TPDA), temperature-programmed reduction, BET and atomic absorption spectroscopy techniques were used to characterize the catalysts. The results revealed that both catalytic activity and surface acidity of these solids is strongly dependent on their calcination and reduction temperatures. Besides, the collected data showed that platinum interacts with tungsten and this interaction depends on the pretreatment conditions.

Affiliations:

Algérie

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

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to stream PascalFrancis, to step Curation: 000210
to stream PascalFrancis, to step Checkpoint: 000224
to stream Main, to step Merge: 000606
to stream Main, to step Curation: 000590

Le document en format XML

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<term>Heterogeneous catalysis</term>
<term>Isomerization</term>
<term>Nickel</term>
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<term>Silica</term>
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<front><div type="abstract" xml:lang="en">In this work, the catalytic behavior of Pt-Ni-WO<sub>x</sub>
 supported on amorphous silica-alumina catalysts, prepared by means of a sol-gel technique was tested by hydroisomerization of n-hexane in a continuous fixed-bed reactor operating at atmospheric pressure. Temperature-programmed desorption of ammonia (TPDA), temperature-programmed reduction, BET and atomic absorption spectroscopy techniques were used to characterize the catalysts. The results revealed that both catalytic activity and surface acidity of these solids is strongly dependent on their calcination and reduction temperatures. Besides, the collected data showed that platinum interacts with tungsten and this interaction depends on the pretreatment conditions.</div>
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<name sortKey="Guemini, Miloud" sort="Guemini, Miloud" uniqKey="Guemini M" first="Miloud" last="Guemini">Miloud Guemini</name>
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Effect of pretreatment conditions on the catalytic performance of Ni-Pt-W supported on amorphous silica-alumina catalysts Part 1. Catalysts prepared by a sol-gel method

Effect of pretreatment conditions on the catalytic performance of Ni-Pt-W supported on amorphous silica-alumina catalysts Part 1. Catalysts prepared by a sol-gel method

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