Influence of preparation method on catalytic properties of mixed calcium-cobalt orthophosphates
Identifieur interne : 000346 ( PascalFrancis/Checkpoint ); précédent : 000345; suivant : 000347Influence of preparation method on catalytic properties of mixed calcium-cobalt orthophosphates
Auteurs : A. Legrouri [Maroc] ; S. S. Romdhane ; J. Lenzi [France] ; M. Lenzi [France] ; G. Bonel [France]Source :
- Journal of materials science [ 0022-2461 ] ; 1996.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
Mixed calcium-cobalt orthophosphates of the formula Ca3-xCOx(PO4)2, with 0 ≤ x ≤ 1.1, were prepared by coprecipitation and solid-state reaction. Structural characterization showed that, in both cases, the solids obtained resulted from substitution of some Ca2+ ions by Co2+ ions in the β-Ca3(PO4)2 structure. The solubility limit of cobalt in this structure corresponded to x = 0.31. The morphology of these compounds was investigated by surface-area measurements and scanning electron microscopy. When tested in the 2-propanol decomposition reaction, the maximum activity in dehydrogenation was obtained with the compound corresponding to cobalt maximum solubility in β-Ca3(PO4)2 structure. Higher activities were obtained for samples prepared by coprecipitation.
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Lenzi</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Centre de Génie Photochimique, Ecole Nationale Supérieure de Chimie, 118, Route de Narbornne</s1><s2>31077 Toulouse</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Lenzi, M" sort="Lenzi, M" uniqKey="Lenzi M" first="M." last="Lenzi">M. Lenzi</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Centre de Génie Photochimique, Ecole Nationale Supérieure de Chimie, 118, Route de Narbornne</s1><s2>31077 Toulouse</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Bonel, G" sort="Bonel, G" uniqKey="Bonel G" first="G." last="Bonel">G. Bonel</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Laboratoire de Physicochimie des Solides, 38, Rue dees 36-Ponts</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">96-0276914</idno><date when="1996">1996</date><idno type="stanalyst">PASCAL 96-0276914 INIST</idno><idno type="RBID">Pascal:96-0276914</idno><idno type="wicri:Area/PascalFrancis/Corpus">000348</idno><idno type="wicri:Area/PascalFrancis/Curation">000355</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000346</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000346</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Influence of preparation method on catalytic properties of mixed calcium-cobalt orthophosphates</title><author><name sortKey="Legrouri, A" sort="Legrouri, A" uniqKey="Legrouri A" first="A." last="Legrouri">A. Legrouri</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Science and Engineering, Al Akhawayn University, P.O. Box 104</s1><s2>5300 Ifrane</s2><s3>MAR</s3><sZ>1 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>5300 Ifrane</wicri:noRegion></affiliation></author><author><name sortKey="Romdhane, S S" sort="Romdhane, S S" uniqKey="Romdhane S" first="S. S." last="Romdhane">S. S. Romdhane</name></author><author><name sortKey="Lenzi, J" sort="Lenzi, J" uniqKey="Lenzi J" first="J." last="Lenzi">J. Lenzi</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Centre de Génie Photochimique, Ecole Nationale Supérieure de Chimie, 118, Route de Narbornne</s1><s2>31077 Toulouse</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Lenzi, M" sort="Lenzi, M" uniqKey="Lenzi M" first="M." last="Lenzi">M. Lenzi</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Centre de Génie Photochimique, Ecole Nationale Supérieure de Chimie, 118, Route de Narbornne</s1><s2>31077 Toulouse</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Bonel, G" sort="Bonel, G" uniqKey="Bonel G" first="G." last="Bonel">G. Bonel</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Laboratoire de Physicochimie des Solides, 38, Rue dees 36-Ponts</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of materials science</title><title level="j" type="abbreviated">J. mater. sci.</title><idno type="ISSN">0022-2461</idno><imprint><date when="1996">1996</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of materials science</title><title level="j" type="abbreviated">J. mater. sci.</title><idno type="ISSN">0022-2461</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Calcium Phosphates</term><term>Catalyst activity</term><term>Cobalt Phosphates</term><term>Coprecipitation</term><term>Preparation</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Activité catalytique</term><term>Préparation</term><term>Coprécipitation</term><term>Cobalt Phosphate</term><term>Calcium Phosphate</term><term>Ca3-xCox(PO4)2</term><term>C Ca O P</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Mixed calcium-cobalt orthophosphates of the formula Ca<sub>3-x</sub>CO<sub>x</sub>(PO<sub>4</sub>)<sub>2</sub>, with 0 ≤ x ≤ 1.1, were prepared by coprecipitation and solid-state reaction. Structural characterization showed that, in both cases, the solids obtained resulted from substitution of some Ca<sup>2+</sup> ions by Co<sup>2+</sup> ions in the β-Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> structure. The solubility limit of cobalt in this structure corresponded to x = 0.31. The morphology of these compounds was investigated by surface-area measurements and scanning electron microscopy. When tested in the 2-propanol decomposition reaction, the maximum activity in dehydrogenation was obtained with the compound corresponding to cobalt maximum solubility in β-Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> structure. Higher activities were obtained for samples prepared by coprecipitation.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0022-2461</s0></fA01><fA02 i1="01"><s0>JMTSAS</s0></fA02><fA03 i2="1"><s0>J. mater. sci.</s0></fA03><fA05><s2>31</s2></fA05><fA06><s2>9</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Influence of preparation method on catalytic properties of mixed calcium-cobalt orthophosphates</s1></fA08><fA11 i1="01" i2="1"><s1>LEGROURI (A.)</s1></fA11><fA11 i1="02" i2="1"><s1>ROMDHANE (S. S.)</s1></fA11><fA11 i1="03" i2="1"><s1>LENZI (J.)</s1></fA11><fA11 i1="04" i2="1"><s1>LENZI (M.)</s1></fA11><fA11 i1="05" i2="1"><s1>BONEL (G.)</s1></fA11><fA14 i1="01"><s1>School of Science and Engineering, Al Akhawayn University, P.O. Box 104</s1><s2>5300 Ifrane</s2><s3>MAR</s3><sZ>1 aut.</sZ></fA14><fA14 i1="02"><s1>Centre de Génie Photochimique, Ecole Nationale Supérieure de Chimie, 118, Route de Narbornne</s1><s2>31077 Toulouse</s2><s3>FRA</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA14 i1="03"><s1>Laboratoire de Physicochimie des Solides, 38, Rue dees 36-Ponts</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>5 aut.</sZ></fA14><fA20><s1>2469-2473</s1></fA20><fA21><s1>1996</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>12733</s2><s5>354000043597590330</s5></fA43><fA44><s0>0000</s0></fA44><fA45><s0>30 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>96-0276914</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of materials science</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>Mixed calcium-cobalt orthophosphates of the formula Ca<sub>3-x</sub>CO<sub>x</sub>(PO<sub>4</sub>)<sub>2</sub>, with 0 ≤ x ≤ 1.1, were prepared by coprecipitation and solid-state reaction. Structural characterization showed that, in both cases, the solids obtained resulted from substitution of some Ca<sup>2+</sup> ions by Co<sup>2+</sup> ions in the β-Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> structure. The solubility limit of cobalt in this structure corresponded to x = 0.31. The morphology of these compounds was investigated by surface-area measurements and scanning electron microscopy. When tested in the 2-propanol decomposition reaction, the maximum activity in dehydrogenation was obtained with the compound corresponding to cobalt maximum solubility in β-Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> structure. Higher activities were obtained for samples prepared by coprecipitation.</s0></fC01><fC02 i1="01" i2="X"><s0>001C01A03A</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Activité catalytique</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>Catalyst activity</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Actividad catalítica</s0><s5>01</s5></fC03><fC03 i1="02" i2="X" l="FRE"><s0>Préparation</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="ENG"><s0>Preparation</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="GER"><s0>Vorbereitung</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="SPA"><s0>Preparación</s0><s5>02</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Coprécipitation</s0><s5>04</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>Coprecipitation</s0><s5>04</s5></fC03><fC03 i1="03" i2="X" l="SPA"><s0>Coprecipitación</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Cobalt Phosphate</s0><s1>ACT</s1><s2>NC</s2><s2>NA</s2><s5>13</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>Cobalt Phosphates</s0><s1>ACT</s1><s2>NC</s2><s2>NA</s2><s5>13</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Cobalto Fosfato</s0><s1>ACT</s1><s2>NC</s2><s2>NA</s2><s5>13</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Calcium Phosphate</s0><s1>ACT</s1><s2>NC</s2><s2>FR</s2><s2>NA</s2><s5>14</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Calcium Phosphates</s0><s1>ACT</s1><s2>NC</s2><s2>FR</s2><s2>NA</s2><s5>14</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Calcio Fosfato</s0><s1>ACT</s1><s2>NC</s2><s2>FR</s2><s2>NA</s2><s5>14</s5></fC03><fC03 i1="06" i2="X" l="FRE"><s0>Ca3-xCox(PO4)2</s0><s4>INC</s4><s5>75</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>C Ca O P</s0><s4>INC</s4><s5>76</s5></fC03><fN21><s1>190</s1></fN21></pA></standard></inist><affiliations><list><country><li>France</li><li>Maroc</li></country><region><li>Midi-Pyrénées</li><li>Occitanie (région administrative)</li></region><settlement><li>Toulouse</li></settlement></list><tree><noCountry><name sortKey="Romdhane, S S" sort="Romdhane, S S" uniqKey="Romdhane S" first="S. S." last="Romdhane">S. S. Romdhane</name></noCountry><country name="Maroc"><noRegion><name sortKey="Legrouri, A" sort="Legrouri, A" uniqKey="Legrouri A" first="A." last="Legrouri">A. Legrouri</name></noRegion></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Lenzi, J" sort="Lenzi, J" uniqKey="Lenzi J" first="J." last="Lenzi">J. Lenzi</name></region><name sortKey="Bonel, G" sort="Bonel, G" uniqKey="Bonel G" first="G." last="Bonel">G. Bonel</name><name sortKey="Lenzi, M" sort="Lenzi, M" uniqKey="Lenzi M" first="M." last="Lenzi">M. Lenzi</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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