Simple approach to prepare mesoporous silica supported mixed-oxide nanoparticles by in situ autocombustion procedure
Identifieur interne : 000103 ( France/Analysis ); précédent : 000102; suivant : 000104Simple approach to prepare mesoporous silica supported mixed-oxide nanoparticles by in situ autocombustion procedure
Auteurs : D. Sellam [France, Algérie] ; M. Bonne [France] ; S. Arrii-Clacens [France] ; G. Lafaye [France] ; N. Bion [France] ; S. Tezkratt [Algérie] ; S. Royer [France] ; P. Marecot [France] ; D. Duprez [France]Source :
- Catalysis today : (Print) [ 0920-5861 ] ; 2010.
Descripteurs français
- Pascal (Inist)
- Mésoporosité, Matériau poreux, Silice, Support, Oxyde, Nanoparticule, In situ, Perovskites, Oxygène, Mobilité, Catalyse hétérogène, Oxydation, Nanocomposite, Glycine, Nitrate, Complexe, Dimension pore, Diffraction RX, Microscopie électronique transmission, Sorption, Adsorption, Réactivité chimique, Echange isotopique, Pore, Colmatage, Dimension particule, Synthèse, Cobalt, Lanthane, SiO2.
- Wicri :
English descriptors
- KwdEn :
- Adsorption, Chemical reactivity, Cobalt, Complexes, Glycine, Heterogeneous catalysis, In situ, Isotope exchange, Lanthanum, Mesoporosity, Mobility, Nanocomposite, Nanoparticle, Nitrates, Oxidation, Oxides, Oxygen, Particle size, Perovskite type compound, Plugging, Pore, Pore size, Porous material, Silica, Sorption, Support, Synthesis, Transmission electron microscopy, X ray diffraction.
Abstract
LaCo03-based nanocomposites were prepared by an in situ autocombustion procedure of a glycine-nitrate complex in mesoporous silica supports. For this purpose, two silica supports with different pore sizes (3.0nm for the HMS-type silica; 8.2 nm for the SBA15-type silica) were prepared. The final materials were characterized using XRD, TEM, N2-sorption and reactivities evaluated using oxygen isotopic exchange (OIE). One interesting point is the limited pore plugging, due to the low particle size obtained, when synthesis is specifically performed in large pore silica support (SBA15), as suggested by the limited pore volume decrease with respect to the HMS-based system. TEM coupled with EDXS analyses suggest the formation of crystalline mixed-oxide nanoparticles which have been observed with a cobalt to lanthanum ratio always close to 1. These nanoparticles exhibit high oxygen exchange capacity (1.2-2.3 times higher exchange capacities after 60 min of reaction), albeit a lower initial rate of exchange compared to the bulk reference sample (due to residual carbonate exchange). At the light of these results, it has been concluded that this method is efficient for producing nanocrystalline particles dispersed in silica pore structure.
Affiliations:
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Pascal:11-0054630Le document en format XML
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Sellam</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Poitiers, LACCO UMR 6503 CNRS, 40 avenue du recteur Pineau</s1><s2>86022 Poitiers</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Poitou-Charentes</region><settlement type="city">Poitiers</settlement></placeName><orgName type="university">Université de Poitiers</orgName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>LCAGC, Hasnaoua 1, Université Mouloud Mammeri</s1><s2>Tizi Ouzou 15000</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Tizi Ouzou 15000</wicri:noRegion></affiliation></author><author><name sortKey="Bonne, M" sort="Bonne, M" uniqKey="Bonne M" first="M." last="Bonne">M. 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Arrii-Clacens</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Poitiers, LACCO UMR 6503 CNRS, 40 avenue du recteur Pineau</s1><s2>86022 Poitiers</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Poitou-Charentes</region><settlement type="city">Poitiers</settlement></placeName><orgName type="university">Université de Poitiers</orgName></affiliation></author><author><name sortKey="Lafaye, G" sort="Lafaye, G" uniqKey="Lafaye G" first="G." last="Lafaye">G. Lafaye</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Poitiers, LACCO UMR 6503 CNRS, 40 avenue du recteur Pineau</s1><s2>86022 Poitiers</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Poitou-Charentes</region><settlement type="city">Poitiers</settlement></placeName><orgName type="university">Université de Poitiers</orgName></affiliation></author><author><name sortKey="Bion, N" sort="Bion, N" uniqKey="Bion N" first="N." last="Bion">N. Bion</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Poitiers, LACCO UMR 6503 CNRS, 40 avenue du recteur Pineau</s1><s2>86022 Poitiers</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Poitou-Charentes</region><settlement type="city">Poitiers</settlement></placeName><orgName type="university">Université de Poitiers</orgName></affiliation></author><author><name sortKey="Tezkratt, S" sort="Tezkratt, S" uniqKey="Tezkratt S" first="S." last="Tezkratt">S. Tezkratt</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>LCAGC, Hasnaoua 1, Université Mouloud Mammeri</s1><s2>Tizi Ouzou 15000</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Tizi Ouzou 15000</wicri:noRegion></affiliation></author><author><name sortKey="Royer, S" sort="Royer, S" uniqKey="Royer S" first="S." last="Royer">S. Royer</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Poitiers, LACCO UMR 6503 CNRS, 40 avenue du recteur Pineau</s1><s2>86022 Poitiers</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Poitou-Charentes</region><settlement type="city">Poitiers</settlement></placeName><orgName type="university">Université de Poitiers</orgName></affiliation></author><author><name sortKey="Marecot, P" sort="Marecot, P" uniqKey="Marecot P" first="P." last="Marecot">P. Marecot</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Poitiers, LACCO UMR 6503 CNRS, 40 avenue du recteur Pineau</s1><s2>86022 Poitiers</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Poitou-Charentes</region><settlement type="city">Poitiers</settlement></placeName><orgName type="university">Université de Poitiers</orgName></affiliation></author><author><name sortKey="Duprez, D" sort="Duprez, D" uniqKey="Duprez D" first="D." last="Duprez">D. Duprez</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Université de Poitiers, LACCO UMR 6503 CNRS, 40 avenue du recteur Pineau</s1><s2>86022 Poitiers</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Poitou-Charentes</region><settlement type="city">Poitiers</settlement></placeName><orgName type="university">Université de Poitiers</orgName></affiliation></author></analytic><series><title level="j" type="main">Catalysis today : (Print)</title><title level="j" type="abbreviated">Catal. today : (Print)</title><idno type="ISSN">0920-5861</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Catalysis today : (Print)</title><title level="j" type="abbreviated">Catal. today : (Print)</title><idno type="ISSN">0920-5861</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption</term><term>Chemical reactivity</term><term>Cobalt</term><term>Complexes</term><term>Glycine</term><term>Heterogeneous catalysis</term><term>In situ</term><term>Isotope exchange</term><term>Lanthanum</term><term>Mesoporosity</term><term>Mobility</term><term>Nanocomposite</term><term>Nanoparticle</term><term>Nitrates</term><term>Oxidation</term><term>Oxides</term><term>Oxygen</term><term>Particle size</term><term>Perovskite type compound</term><term>Plugging</term><term>Pore</term><term>Pore size</term><term>Porous material</term><term>Silica</term><term>Sorption</term><term>Support</term><term>Synthesis</term><term>Transmission electron microscopy</term><term>X ray diffraction</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Mésoporosité</term><term>Matériau poreux</term><term>Silice</term><term>Support</term><term>Oxyde</term><term>Nanoparticule</term><term>In situ</term><term>Perovskites</term><term>Oxygène</term><term>Mobilité</term><term>Catalyse hétérogène</term><term>Oxydation</term><term>Nanocomposite</term><term>Glycine</term><term>Nitrate</term><term>Complexe</term><term>Dimension pore</term><term>Diffraction RX</term><term>Microscopie électronique transmission</term><term>Sorption</term><term>Adsorption</term><term>Réactivité chimique</term><term>Echange isotopique</term><term>Pore</term><term>Colmatage</term><term>Dimension particule</term><term>Synthèse</term><term>Cobalt</term><term>Lanthane</term><term>SiO2</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Oxyde</term><term>Oxygène</term><term>Cobalt</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">LaCo0<sub>3</sub>-based nanocomposites were prepared by an in situ autocombustion procedure of a glycine-nitrate complex in mesoporous silica supports. For this purpose, two silica supports with different pore sizes (3.0nm for the HMS-type silica; 8.2 nm for the SBA15-type silica) were prepared. The final materials were characterized using XRD, TEM, N<sub>2</sub>-sorption and reactivities evaluated using oxygen isotopic exchange (OIE). One interesting point is the limited pore plugging, due to the low particle size obtained, when synthesis is specifically performed in large pore silica support (SBA15), as suggested by the limited pore volume decrease with respect to the HMS-based system. TEM coupled with EDXS analyses suggest the formation of crystalline mixed-oxide nanoparticles which have been observed with a cobalt to lanthanum ratio always close to 1. These nanoparticles exhibit high oxygen exchange capacity (1.2-2.3 times higher exchange capacities after 60 min of reaction), albeit a lower initial rate of exchange compared to the bulk reference sample (due to residual carbonate exchange). At the light of these results, it has been concluded that this method is efficient for producing nanocrystalline particles dispersed in silica pore structure.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Nouvelle-Aquitaine</li><li>Poitou-Charentes</li></region><settlement><li>Poitiers</li></settlement><orgName><li>Université de Poitiers</li></orgName></list><tree><country name="France"><region name="Nouvelle-Aquitaine"><name sortKey="Sellam, D" sort="Sellam, D" uniqKey="Sellam D" first="D." last="Sellam">D. Sellam</name></region><name sortKey="Arrii Clacens, S" sort="Arrii Clacens, S" uniqKey="Arrii Clacens S" first="S." last="Arrii-Clacens">S. Arrii-Clacens</name><name sortKey="Bion, N" sort="Bion, N" uniqKey="Bion N" first="N." last="Bion">N. Bion</name><name sortKey="Bonne, M" sort="Bonne, M" uniqKey="Bonne M" first="M." last="Bonne">M. Bonne</name><name sortKey="Duprez, D" sort="Duprez, D" uniqKey="Duprez D" first="D." last="Duprez">D. Duprez</name><name sortKey="Lafaye, G" sort="Lafaye, G" uniqKey="Lafaye G" first="G." last="Lafaye">G. Lafaye</name><name sortKey="Marecot, P" sort="Marecot, P" uniqKey="Marecot P" first="P." last="Marecot">P. Marecot</name><name sortKey="Royer, S" sort="Royer, S" uniqKey="Royer S" first="S." last="Royer">S. Royer</name></country><country name="Algérie"><noRegion><name sortKey="Sellam, D" sort="Sellam, D" uniqKey="Sellam D" first="D." last="Sellam">D. Sellam</name></noRegion><name sortKey="Tezkratt, S" sort="Tezkratt, S" uniqKey="Tezkratt S" first="S." last="Tezkratt">S. Tezkratt</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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