Activity in hydrotreatment processes of Ni-Mo loaded zirconium phosphate Zr3(PO4)4
Identifieur interne : 000394 ( France/Analysis ); précédent : 000393; suivant : 000395Activity in hydrotreatment processes of Ni-Mo loaded zirconium phosphate Zr3(PO4)4
Auteurs : M. Ziyad [Maroc] ; M. Rouimi [Maroc] ; J.-L. Portefaix [France]Source :
- Applied catalysis. A, General [ 0926-860X ] ; 1999.
Descripteurs français
- Pascal (Inist)
- Wicri :
English descriptors
- KwdEn :
Abstract
Amorphous zirconium phosphate Zr3(PO4)4 (referred to as ZrP) with a specific surface area of 114 m2 g-1 was prepared by a sol-gel method. Its acid properties were studied by: 1. butan-2-ol conversion 2. IR spectroscopy of adsorbed pyridine and 3. microcalorimetric measurements of heat of ammonia adsorption. It was found that the sample exhibits two kinds of acidic Brønsted sites and also Lewis acidity. The strongest acid sites retained pyridine until 623 K. True Lewis acidity was associated with zirconium atoms emerging on the surface of the sample. Sulfided samples of Mo/ZrP and NiMo/ZrP were tested in biphenyl hydrogenation, thiophene hydrodesulfurization and pyridine hydrodenitrogenation. Their intrinsic activities were significantly higher than an industrial NiMo/Al2O3 catalyst. Catalyst characterization by conventional spectroscopic techniques did not show any crucial difference between NiMo/ Al2O3 and NiMo/ZrP. However, on the sulfided samples, electron microscopy observations revealed that the MoS2 crystallites are very well dispersed on the support and smaller on ZrP than on alumina. In addition, the stacking of MoS2 layers was found to be equal to 1.6 when using ZrP instead of 2 on Al2O3. All these features were correlated to the catalytic performances of the samples and to ZrP surface properties that are believed to contribute to the stabilization of,highly dispersed MoS2 species.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000458
- to stream PascalFrancis, to step Curation: 000609
- to stream PascalFrancis, to step Checkpoint: 000465
- to stream Main, to step Merge: 000D14
- to stream Main, to step Curation: 000C74
- to stream Main, to step Exploration: 000C74
- to stream France, to step Extraction: 000394
Links to Exploration step
Pascal:99-0296656Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Activity in hydrotreatment processes of Ni-Mo loaded zirconium phosphate Zr<sub>3</sub>(PO<sub>4</sub>)<sub>4</sub></title><author><name sortKey="Ziyad, M" sort="Ziyad, M" uniqKey="Ziyad M" first="M." last="Ziyad">M. Ziyad</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculté des Sciences, Département de Chimie, Laboratoire de Physico-chimie des Matériaux et Catalyse, Avenue Ibn Batouta, BP 1014</s1><s2>Rabat</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author><author><name sortKey="Rouimi, M" sort="Rouimi, M" uniqKey="Rouimi M" first="M." last="Rouimi">M. Rouimi</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculté des Sciences, Département de Chimie, Laboratoire de Physico-chimie des Matériaux et Catalyse, Avenue Ibn Batouta, BP 1014</s1><s2>Rabat</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author><author><name sortKey="Portefaix, J L" sort="Portefaix, J L" uniqKey="Portefaix J" first="J.-L." last="Portefaix">J.-L. Portefaix</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Institut de Recherches sur la Catalyse (CNRS), 2, Avenue Albert Einstein</s1><s2>69626 Villeurbanne</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Villeurbanne</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">99-0296656</idno><date when="1999">1999</date><idno type="stanalyst">PASCAL 99-0296656 INIST</idno><idno type="RBID">Pascal:99-0296656</idno><idno type="wicri:Area/PascalFrancis/Corpus">000458</idno><idno type="wicri:Area/PascalFrancis/Curation">000609</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000465</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000465</idno><idno type="wicri:doubleKey">0926-860X:1999:Ziyad M:activity:in:hydrotreatment</idno><idno type="wicri:Area/Main/Merge">000D14</idno><idno type="wicri:Area/Main/Curation">000C74</idno><idno type="wicri:Area/Main/Exploration">000C74</idno><idno type="wicri:Area/France/Extraction">000394</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Activity in hydrotreatment processes of Ni-Mo loaded zirconium phosphate Zr<sub>3</sub>(PO<sub>4</sub>)<sub>4</sub></title><author><name sortKey="Ziyad, M" sort="Ziyad, M" uniqKey="Ziyad M" first="M." last="Ziyad">M. Ziyad</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculté des Sciences, Département de Chimie, Laboratoire de Physico-chimie des Matériaux et Catalyse, Avenue Ibn Batouta, BP 1014</s1><s2>Rabat</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author><author><name sortKey="Rouimi, M" sort="Rouimi, M" uniqKey="Rouimi M" first="M." last="Rouimi">M. Rouimi</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Faculté des Sciences, Département de Chimie, Laboratoire de Physico-chimie des Matériaux et Catalyse, Avenue Ibn Batouta, BP 1014</s1><s2>Rabat</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author><author><name sortKey="Portefaix, J L" sort="Portefaix, J L" uniqKey="Portefaix J" first="J.-L." last="Portefaix">J.-L. Portefaix</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Institut de Recherches sur la Catalyse (CNRS), 2, Avenue Albert Einstein</s1><s2>69626 Villeurbanne</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Villeurbanne</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Applied catalysis. A, General</title><title level="j" type="abbreviated">Appl. catal., A Gen.</title><idno type="ISSN">0926-860X</idno><imprint><date when="1999">1999</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Applied catalysis. A, General</title><title level="j" type="abbreviated">Appl. catal., A Gen.</title><idno type="ISSN">0926-860X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biphenyl</term><term>Catalyst activity</term><term>Characterization</term><term>Experimental study</term><term>Hydrotreating</term><term>Mixed catalyst</term><term>Molybdenum</term><term>Nickel</term><term>Supported catalyst</term><term>Thiophene</term><term>Zirconium phosphate</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Activité catalytique</term><term>Hydrotraitement</term><term>Catalyseur mixte</term><term>Nickel</term><term>Molybdène</term><term>Catalyseur sur support</term><term>Zirconium phosphate</term><term>Thiophène</term><term>Biphényle</term><term>Caractérisation</term><term>Etude expérimentale</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Nickel</term><term>Molybdène</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Amorphous zirconium phosphate Zr<sub>3</sub>(PO<sub>4</sub>)<sub>4</sub> (referred to as ZrP) with a specific surface area of 114 m<sup>2</sup> g<sup>-1</sup> was prepared by a sol-gel method. Its acid properties were studied by: 1. butan-2-ol conversion 2. IR spectroscopy of adsorbed pyridine and 3. microcalorimetric measurements of heat of ammonia adsorption. It was found that the sample exhibits two kinds of acidic Brønsted sites and also Lewis acidity. The strongest acid sites retained pyridine until 623 K. True Lewis acidity was associated with zirconium atoms emerging on the surface of the sample. Sulfided samples of Mo/ZrP and NiMo/ZrP were tested in biphenyl hydrogenation, thiophene hydrodesulfurization and pyridine hydrodenitrogenation. Their intrinsic activities were significantly higher than an industrial NiMo/Al<sub>2</sub>O<sub>3</sub> catalyst. Catalyst characterization by conventional spectroscopic techniques did not show any crucial difference between NiMo/ Al<sub>2</sub>O<sub>3</sub> and NiMo/ZrP. However, on the sulfided samples, electron microscopy observations revealed that the MoS<sub>2</sub> crystallites are very well dispersed on the support and smaller on ZrP than on alumina. In addition, the stacking of MoS<sub>2</sub> layers was found to be equal to 1.6 when using ZrP instead of 2 on Al<sub>2</sub>O<sub>3</sub>. All these features were correlated to the catalytic performances of the samples and to ZrP surface properties that are believed to contribute to the stabilization of,highly dispersed MoS<sub>2</sub> species.</div></front></TEI><affiliations><list><country><li>France</li><li>Maroc</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rabat-Salé-Kénitra</li><li>Rhône-Alpes</li></region><settlement><li>Rabat</li><li>Villeurbanne</li></settlement></list><tree><country name="Maroc"><region name="Rabat-Salé-Kénitra"><name sortKey="Ziyad, M" sort="Ziyad, M" uniqKey="Ziyad M" first="M." last="Ziyad">M. Ziyad</name></region><name sortKey="Rouimi, M" sort="Rouimi, M" uniqKey="Rouimi M" first="M." last="Rouimi">M. Rouimi</name></country><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Portefaix, J L" sort="Portefaix, J L" uniqKey="Portefaix J" first="J.-L." last="Portefaix">J.-L. Portefaix</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/NickelMaghrebV1/Data/France/Analysis
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000394 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/France/Analysis/biblio.hfd -nk 000394 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Terre
|area= NickelMaghrebV1
|flux= France
|étape= Analysis
|type= RBID
|clé= Pascal:99-0296656
|texte= Activity in hydrotreatment processes of Ni-Mo loaded zirconium phosphate Zr3(PO4)4
}}
| This area was generated with Dilib version V0.6.27. |  |