NickelMaghrebV1, Main, Exploration, bibRecord, 000422

Hydroisomerization of n-decane over Ni-Pt-W supported on amorphous silica-alumina catalysts

Identifieur interne : 000422 ( Main/Exploration ); précédent : 000421; suivant : 000423

Hydroisomerization of n-decane over Ni-Pt-W supported on amorphous silica-alumina catalysts

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

Source :

Applied catalysis. A, General : (Print) [ 0926-860X ] ; 2010.

RBID : Pascal:10-0288962

Descripteurs français

Pascal (Inist)
- Décane, Support, Silice, Alumine, Catalyseur, Platine, Nickel, Isomérisation, Stabilité, Catalyse hétérogène, Procédé sol gel, Imprégnation, Plasma, Thermodésorption, Ammoniac, Pyridine, Adsorption, Spectrométrie IR, Réacteur lit fixe, Pression atmosphérique, Vitesse, Hydrogène, Hydrocarbure, Isomère, Conversion, Sélectivité, SiO2, Al2O3.
Wicri :
- topic : Platine, Nickel, Hydrogène, Hydrocarbure.

English descriptors

KwdEn :
- Adsorption, Alumina, Ammonia, Atmospheric pressure, Catalyst, Conversion, Decane, Fixed bed reactor, Heterogeneous catalysis, Hydrocarbon, Hydrogen, Impregnation, Infrared spectrometry, Isomer, Isomerization, Nickel, Plasma, Platinum, Pyridine, Selectivity, Silica, Sol gel process, Stability, Support, Thermodesorption, Velocity.

Abstract

A series of NiPtW/silica-alumina catalysts (wt.%: Ni,12-17; W: 10, Pt: 0.1-1) were prepared via a hybrid method: sol-gel and incipient wetness impregnation and characterized by inductively coupled plasma-atomic emission spectroscopy (ICP-AES), BET, temperature-programmed desorption of ammonia (NH₃-TPD), pyridine adsorption followed by FTIR and TPO techniques. On these catalysts, n-decane hydroisomerization was carried out under the following conditions: fixed bed reactor, atmospheric pressure, temperature ranging from 150 to 300 °C, weight hourly space velocity of 4 h^-1 and molar hydrogen/hydrocarbon ratio of 5. Pt was found to promote activity and stability, the effect being optimal for 0.2 wt.% Pt. Isomers and cracking products yields were a function of both metal (Ni and Pt) content and conversion. Whatever n-decane conversion, monobranched isomers were found to be predominant. Besides, up to 10% conversion, the cracked products were not produced in significant amounts. For a time on stream of 100 min, the best results (47% conversion and 56% isomerization selectivity) were obtained at 250 °C over the catalyst containing 12% Ni, 10% W and 0.2% Pt).

Affiliations:

Algérie

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to stream PascalFrancis, to step Curation: 000287
to stream PascalFrancis, to step Checkpoint: 000150
to stream Main, to step Merge: 000433
to stream Main, to step Curation: 000422

Le document en format XML

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<front><div type="abstract" xml:lang="en">A series of NiPtW/silica-alumina catalysts (wt.%: Ni,12-17; W: 10, Pt: 0.1-1) were prepared via a hybrid method: sol-gel and incipient wetness impregnation and characterized by inductively coupled plasma-atomic emission spectroscopy (ICP-AES), BET, temperature-programmed desorption of ammonia (NH<sub>3</sub>
-TPD), pyridine adsorption followed by FTIR and TPO techniques. On these catalysts, n-decane hydroisomerization was carried out under the following conditions: fixed bed reactor, atmospheric pressure, temperature ranging from 150 to 300 °C, weight hourly space velocity of 4 h<sup>-1</sup>
 and molar hydrogen/hydrocarbon ratio of 5. Pt was found to promote activity and stability, the effect being optimal for 0.2 wt.% Pt. Isomers and cracking products yields were a function of both metal (Ni and Pt) content and conversion. Whatever n-decane conversion, monobranched isomers were found to be predominant. Besides, up to 10% conversion, the cracked products were not produced in significant amounts. For a time on stream of 100 min, the best results (47% conversion and 56% isomerization selectivity) were obtained at 250 °C over the catalyst containing 12% Ni, 10% W and 0.2% Pt).</div>
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Hydroisomerization of n-decane over Ni-Pt-W supported on amorphous silica-alumina catalysts

Hydroisomerization of n-decane over Ni-Pt-W supported on amorphous silica-alumina 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