NickelMaghrebV1, Main, Exploration, bibRecord, 000963

Isomerization of n-heptane over Ni-WOx/SiO2-Al2O3 catalysts. Effect of operating conditions, and nickel and tungsten loading

Identifieur interne : 000963 ( Main/Exploration ); précédent : 000962; suivant : 000964

Isomerization of n-heptane over Ni-WOx/SiO2-Al2O3 catalysts. Effect of operating conditions, and nickel and tungsten loading

Auteurs : Y. Rezgui [Algérie] ; M. Guemini [Algérie] ; A. Tighezza [Arabie saoudite] ; A. Bouchemma [Algérie]

Source :

Catalysis letters [ 1011-372X ] ; 2003.

RBID : Pascal:03-0249756

Descripteurs français

Pascal (Inist)
- Isomérisation, Heptane, Catalyseur sur support, Condition opératoire, Nickel, Tungstène Oxyde, Catalyseur modifié, Catalyseur mixte, Réaction catalytique, Procédé sol gel, Effet concentration, Catalyse hétérogène, Réduction chimique, Calcination, Indice octane, WOx, O W.
Wicri :
- topic : Nickel.

English descriptors

KwdEn :
- Calcining, Catalytic reaction, Chemical reduction, Concentration effect, Heptane, Heterogeneous catalysis, Isomerization, Mixed catalyst, Modified catalyst, Nickel, Octane number, Operating conditions, Sol gel process, Supported catalyst, Tungsten Oxides.

Abstract

Isomerization of n-heptane over Ni-WO_x/Al₂O₃-SiO₂ catalysts was carried out in a continuous flow fixed-bed reactor under atmospheric pressure. The first part of this study deals with the preparation of two series of catalysts (A and B) by the sol-gel method, while the second part deals with the isomerization ofn-heptane. The principal objective of this study was to choose the catalyst giving the best isomer yield (di-and tri-branched ones) with optimum reaction conditions (reaction temperature, reduction temperature and time on stream). From the results obtained, the optimum nickel content was found to be 15 wt% and it seems that the incorporation of tungsten (B series) leads to a significant enhancement in the activity of the prepared catalysts. After running on stream for 100min, the catalyst with 15% nickel and 10% tungsten (B4 catalyst) gives the best results (29% conversion and 70% selectivity) at 250 C.

Affiliations:

Algérie, Arabie saoudite

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

to stream PascalFrancis, to step Corpus: 000376
to stream PascalFrancis, to step Curation: 000065
to stream PascalFrancis, to step Checkpoint: 000368
to stream Main, to step Merge: 000986
to stream Main, to step Curation: 000963

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Isomerization of n-heptane over Ni-WO<sub>x</sub>
/SiO<sub>2</sub>
-Al<sub>2</sub>
O<sub>3</sub>
 catalysts. Effect of operating conditions, and nickel and tungsten loading</title>
<author><name sortKey="Rezgui, Y" sort="Rezgui, Y" uniqKey="Rezgui Y" first="Y." last="Rezgui">Y. Rezgui</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherche de Chimie, Université d'Oum El Bouaghi, BP 358 Route de Constantine</s1>
<s2>Oum El Bouaghi 04000</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<wicri:noRegion>Oum El Bouaghi 04000</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Guemini, M" sort="Guemini, M" uniqKey="Guemini M" first="M." last="Guemini">M. Guemini</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherche de Chimie, Université d'Oum El Bouaghi, BP 358 Route de Constantine</s1>
<s2>Oum El Bouaghi 04000</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<wicri:noRegion>Oum El Bouaghi 04000</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Tighezza, A" sort="Tighezza, A" uniqKey="Tighezza A" first="A." last="Tighezza">A. Tighezza</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemistry, College of Sciences, King Saud University</s1>
<s3>SAU</s3>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Arabie saoudite</country>
<wicri:noRegion>Department of Chemistry, College of Sciences, King Saud University</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Bouchemma, A" sort="Bouchemma, A" uniqKey="Bouchemma A" first="A." last="Bouchemma">A. Bouchemma</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherche de Chimie, Université d'Oum El Bouaghi, BP 358 Route de Constantine</s1>
<s2>Oum El Bouaghi 04000</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<wicri:noRegion>Oum El Bouaghi 04000</wicri:noRegion>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">03-0249756</idno>
<date when="2003">2003</date>
<idno type="stanalyst">PASCAL 03-0249756 INIST</idno>
<idno type="RBID">Pascal:03-0249756</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">000376</idno>
<idno type="wicri:Area/PascalFrancis/Curation">000065</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">000368</idno>
<idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000368</idno>
<idno type="wicri:doubleKey">1011-372X:2003:Rezgui Y:isomerization:of:n</idno>
<idno type="wicri:Area/Main/Merge">000986</idno>
<idno type="wicri:Area/Main/Curation">000963</idno>
<idno type="wicri:Area/Main/Exploration">000963</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Isomerization of n-heptane over Ni-WO<sub>x</sub>
/SiO<sub>2</sub>
-Al<sub>2</sub>
O<sub>3</sub>
 catalysts. Effect of operating conditions, and nickel and tungsten loading</title>
<author><name sortKey="Rezgui, Y" sort="Rezgui, Y" uniqKey="Rezgui Y" first="Y." last="Rezgui">Y. Rezgui</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherche de Chimie, Université d'Oum El Bouaghi, BP 358 Route de Constantine</s1>
<s2>Oum El Bouaghi 04000</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<wicri:noRegion>Oum El Bouaghi 04000</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Guemini, M" sort="Guemini, M" uniqKey="Guemini M" first="M." last="Guemini">M. Guemini</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherche de Chimie, Université d'Oum El Bouaghi, BP 358 Route de Constantine</s1>
<s2>Oum El Bouaghi 04000</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<wicri:noRegion>Oum El Bouaghi 04000</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Tighezza, A" sort="Tighezza, A" uniqKey="Tighezza A" first="A." last="Tighezza">A. Tighezza</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Chemistry, College of Sciences, King Saud University</s1>
<s3>SAU</s3>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Arabie saoudite</country>
<wicri:noRegion>Department of Chemistry, College of Sciences, King Saud University</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Bouchemma, A" sort="Bouchemma, A" uniqKey="Bouchemma A" first="A." last="Bouchemma">A. Bouchemma</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Recherche de Chimie, Université d'Oum El Bouaghi, BP 358 Route de Constantine</s1>
<s2>Oum El Bouaghi 04000</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<wicri:noRegion>Oum El Bouaghi 04000</wicri:noRegion>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Catalysis letters</title>
<title level="j" type="abbreviated">Catal. lett.</title>
<idno type="ISSN">1011-372X</idno>
<imprint><date when="2003">2003</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Catalysis letters</title>
<title level="j" type="abbreviated">Catal. lett.</title>
<idno type="ISSN">1011-372X</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Calcining</term>
<term>Catalytic reaction</term>
<term>Chemical reduction</term>
<term>Concentration effect</term>
<term>Heptane</term>
<term>Heterogeneous catalysis</term>
<term>Isomerization</term>
<term>Mixed catalyst</term>
<term>Modified catalyst</term>
<term>Nickel</term>
<term>Octane number</term>
<term>Operating conditions</term>
<term>Sol gel process</term>
<term>Supported catalyst</term>
<term>Tungsten Oxides</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Isomérisation</term>
<term>Heptane</term>
<term>Catalyseur sur support</term>
<term>Condition opératoire</term>
<term>Nickel</term>
<term>Tungstène Oxyde</term>
<term>Catalyseur modifié</term>
<term>Catalyseur mixte</term>
<term>Réaction catalytique</term>
<term>Procédé sol gel</term>
<term>Effet concentration</term>
<term>Catalyse hétérogène</term>
<term>Réduction chimique</term>
<term>Calcination</term>
<term>Indice octane</term>
<term>WOx</term>
<term>O W</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Nickel</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Isomerization of n-heptane over Ni-WO<sub>x</sub>
/Al<sub>2</sub>
O<sub>3</sub>
-SiO<sub>2</sub>
 catalysts was carried out in a continuous flow fixed-bed reactor under atmospheric pressure. The first part of this study deals with the preparation of two series of catalysts (A and B) by the sol-gel method, while the second part deals with the isomerization ofn-heptane. The principal objective of this study was to choose the catalyst giving the best isomer yield (di-and tri-branched ones) with optimum reaction conditions (reaction temperature, reduction temperature and time on stream). From the results obtained, the optimum nickel content was found to be 15 wt% and it seems that the incorporation of tungsten (B series) leads to a significant enhancement in the activity of the prepared catalysts. After running on stream for 100min, the catalyst with 15% nickel and 10% tungsten (B4 catalyst) gives the best results (29% conversion and 70% selectivity) at 250 C.</div>
</front>
</TEI>
<affiliations><list><country><li>Algérie</li>
<li>Arabie saoudite</li>
</country>
</list>
<tree><country name="Algérie"><noRegion><name sortKey="Rezgui, Y" sort="Rezgui, Y" uniqKey="Rezgui Y" first="Y." last="Rezgui">Y. Rezgui</name>
</noRegion>
<name sortKey="Bouchemma, A" sort="Bouchemma, A" uniqKey="Bouchemma A" first="A." last="Bouchemma">A. Bouchemma</name>
<name sortKey="Guemini, M" sort="Guemini, M" uniqKey="Guemini M" first="M." last="Guemini">M. Guemini</name>
</country>
<country name="Arabie saoudite"><noRegion><name sortKey="Tighezza, A" sort="Tighezza, A" uniqKey="Tighezza A" first="A." last="Tighezza">A. Tighezza</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/NickelMaghrebV1/Data/Main/Exploration

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000963 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000963 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Terre
   |area=    NickelMaghrebV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:03-0249756
   |texte=   Isomerization of n-heptane over Ni-WOx/SiO2-Al2O3 catalysts. Effect of operating conditions, and nickel and tungsten loading
}}

This area was generated with Dilib version V0.6.27.
Data generation: Fri Mar 24 23:14:20 2017. Site generation: Tue Mar 5 17:03:47 2024

	Serveur d'exploration sur le nickel au Maghreb
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration sur le nickel au Maghreb

Isomerization of n-heptane over Ni-WOx/SiO2-Al2O3 catalysts. Effect of operating conditions, and nickel and tungsten loading

Isomerization of n-heptane over Ni-WOx/SiO2-Al2O3 catalysts. Effect of operating conditions, and nickel and tungsten loading

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