Ammoxidation of ethylene to acetonitrile over chromium or cobalt alumina catalysts prepared by sol-gel method
Identifieur interne : 000115 ( PascalFrancis/Checkpoint ); précédent : 000114; suivant : 000116Ammoxidation of ethylene to acetonitrile over chromium or cobalt alumina catalysts prepared by sol-gel method
Auteurs : F. Ayari [Tunisie] ; M. Mhamdi [Tunisie] ; G. Delahay [France] ; A. Ghorbel [Tunisie]Source :
- Journal of sol-gel science and technology [ 0928-0707 ] ; 2009.
Descripteurs français
- Pascal (Inist)
- Ammonioxydation, Ethylène, Acétonitrile, Nitrile, Chrome, Cobalt, Alumine, Catalyseur, Procédé sol gel, Oxyde d'aluminium, Catalyseur sur support, Imprégnation, Propriété physicochimique, Analyse chimique, Physisorption, Diffraction RX, Spectrométrie RMN, Facteur réflexion, Spectrométrie Raman, Réduction chimique, Mésoporosité, Matériau poreux, Aire superficielle, Support, Pore, Xérogel, Aérogel, Etat supercritique, Al2O3, Al O, Co3O4, Co O.
- Wicri :
English descriptors
- KwdEn :
- Acetonitrile, Aerogel, Alumina, Aluminium oxide, Ammoxidation, Catalyst, Chemical analysis, Chemical reduction, Chromium, Cobalt, Ethylene, Impregnation, Mesoporosity, NMR spectrometry, Nitrile, Physicochemical properties, Physisorption, Pore, Porous material, Raman spectrometry, Reflectance, Sol gel process, Supercritical state, Support, Supported catalyst, Surface area, X ray diffraction, Xerogel.
Abstract
A series of Cr/Al2O3 and Co/Al2O3 catalysts were tested in the selective ammoxidation of ethylene to acetonitrile. Catalysts were prepared either by sol-gel method or by impregnation with chromium or cobalt acetylacetonate salts. Physicochemical properties of catalysts were accomplished by several techniques such as chemical analysis, physisorption of N2, X-ray diffraction (XRD), 27Al MAS NMR, UV-Visible diffuse reflectance (DRS) and Raman spectroscopy and temperature programmed reduction of H2 (H2-TPR). Textural analysis reveals that mesoporous materials with pronounced surface areas were obtained using sol-gel procedure while impregnation of the support produces a moderate decrease of its surface area and pore volume. XRD analysis confirms the presence of highly dispersed metal species which reside essentially on the surface and measure less than 4 nm. Furthermore, 27Al MAS NMR shows that for xerogels, part of metal species occupies sites on/in Al2O3 in close vicinity of octahedral 27Al. This, apparently, is not the case for aerogels. For Cr/Al2O3 catalysts, isolated Cr6+, mono and polychromate species were identified using DRS, Raman Spectroscopy and H2-TPR which seem to play a key role in the ammoxidation of ethylene. Furthermore, for cobalt doped catalysts, CoAl2O4 was identified as active phase on the basis of DRS and H2-TPR results. From the supercritical drying, it results generally better catalysts than catalysts calcined by ordinary procedure which leads to inactive agglomerated Co3O4 and COO-Al2O3 phase.
Affiliations:
- France, Tunisie
- Gouvernorat de Tunis, Languedoc-Roussillon, Occitanie (région administrative)
- Montpellier, Tunis
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Pascal:09-0163243Le document en format XML
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<author><name sortKey="Mhamdi, M" sort="Mhamdi, M" uniqKey="Mhamdi M" first="M." last="Mhamdi">M. Mhamdi</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Chimie des Matériaux et Catalyse, Département de Chimie, Faculté des Sciences de Tunis, Campus Universitaire Tunis ElManar</s1>
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<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Institut Charles Gerhardt Montpellier, UMR 5253, CNRS-UM2-ENSCM-UM1, Eq. "Matériaux Avancés pour la Catalyse et la Santé" ENSCM (MACS -Site la Galéra), 8, rue Ecole Normale</s1>
<s2>34296 Montpellier</s2>
<s3>FRA</s3>
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<region type="old region" nuts="2">Languedoc-Roussillon</region>
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</affiliation>
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<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Chimie des Matériaux et Catalyse, Département de Chimie, Faculté des Sciences de Tunis, Campus Universitaire Tunis ElManar</s1>
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<series><title level="j" type="main">Journal of sol-gel science and technology</title>
<title level="j" type="abbreviated">J. sol-gel sci. technol.</title>
<idno type="ISSN">0928-0707</idno>
<imprint><date when="2009">2009</date>
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</seriesStmt>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acetonitrile</term>
<term>Aerogel</term>
<term>Alumina</term>
<term>Aluminium oxide</term>
<term>Ammoxidation</term>
<term>Catalyst</term>
<term>Chemical analysis</term>
<term>Chemical reduction</term>
<term>Chromium</term>
<term>Cobalt</term>
<term>Ethylene</term>
<term>Impregnation</term>
<term>Mesoporosity</term>
<term>NMR spectrometry</term>
<term>Nitrile</term>
<term>Physicochemical properties</term>
<term>Physisorption</term>
<term>Pore</term>
<term>Porous material</term>
<term>Raman spectrometry</term>
<term>Reflectance</term>
<term>Sol gel process</term>
<term>Supercritical state</term>
<term>Support</term>
<term>Supported catalyst</term>
<term>Surface area</term>
<term>X ray diffraction</term>
<term>Xerogel</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Ammonioxydation</term>
<term>Ethylène</term>
<term>Acétonitrile</term>
<term>Nitrile</term>
<term>Chrome</term>
<term>Cobalt</term>
<term>Alumine</term>
<term>Catalyseur</term>
<term>Procédé sol gel</term>
<term>Oxyde d'aluminium</term>
<term>Catalyseur sur support</term>
<term>Imprégnation</term>
<term>Propriété physicochimique</term>
<term>Analyse chimique</term>
<term>Physisorption</term>
<term>Diffraction RX</term>
<term>Spectrométrie RMN</term>
<term>Facteur réflexion</term>
<term>Spectrométrie Raman</term>
<term>Réduction chimique</term>
<term>Mésoporosité</term>
<term>Matériau poreux</term>
<term>Aire superficielle</term>
<term>Support</term>
<term>Pore</term>
<term>Xérogel</term>
<term>Aérogel</term>
<term>Etat supercritique</term>
<term>Al2O3</term>
<term>Al O</term>
<term>Co3O4</term>
<term>Co O</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Chrome</term>
<term>Cobalt</term>
</keywords>
</textClass>
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<front><div type="abstract" xml:lang="en">A series of Cr/Al<sub>2</sub>
O<sub>3</sub>
and Co/Al<sub>2</sub>
O<sub>3</sub>
catalysts were tested in the selective ammoxidation of ethylene to acetonitrile. Catalysts were prepared either by sol-gel method or by impregnation with chromium or cobalt acetylacetonate salts. Physicochemical properties of catalysts were accomplished by several techniques such as chemical analysis, physisorption of N<sub>2</sub>
, X-ray diffraction (XRD), <sup>27</sup>
Al MAS NMR, UV-Visible diffuse reflectance (DRS) and Raman spectroscopy and temperature programmed reduction of H<sub>2</sub>
(H<sub>2</sub>
-TPR). Textural analysis reveals that mesoporous materials with pronounced surface areas were obtained using sol-gel procedure while impregnation of the support produces a moderate decrease of its surface area and pore volume. XRD analysis confirms the presence of highly dispersed metal species which reside essentially on the surface and measure less than 4 nm. Furthermore, <sup>27</sup>
Al MAS NMR shows that for xerogels, part of metal species occupies sites on/in Al<sub>2</sub>
O<sub>3</sub>
in close vicinity of octahedral <sup>27</sup>
Al. This, apparently, is not the case for aerogels. For Cr/Al<sub>2</sub>
O<sub>3</sub>
catalysts, isolated Cr<sup>6+</sup>
, mono and polychromate species were identified using DRS, Raman Spectroscopy and H<sub>2</sub>
-TPR which seem to play a key role in the ammoxidation of ethylene. Furthermore, for cobalt doped catalysts, CoAl<sub>2</sub>
O<sub>4</sub>
was identified as active phase on the basis of DRS and H<sub>2</sub>
-TPR results. From the supercritical drying, it results generally better catalysts than catalysts calcined by ordinary procedure which leads to inactive agglomerated Co<sub>3</sub>
O<sub>4</sub>
and COO-Al<sub>2</sub>
O<sub>3</sub>
phase.</div>
</front>
</TEI>
<inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0928-0707</s0>
</fA01>
<fA03 i2="1"><s0>J. sol-gel sci. technol.</s0>
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<fA05><s2>49</s2>
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<fA06><s2>2</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG"><s1>Ammoxidation of ethylene to acetonitrile over chromium or cobalt alumina catalysts prepared by sol-gel method</s1>
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<fA11 i1="01" i2="1"><s1>AYARI (F.)</s1>
</fA11>
<fA11 i1="02" i2="1"><s1>MHAMDI (M.)</s1>
</fA11>
<fA11 i1="03" i2="1"><s1>DELAHAY (G.)</s1>
</fA11>
<fA11 i1="04" i2="1"><s1>GHORBEL (A.)</s1>
</fA11>
<fA14 i1="01"><s1>Laboratoire de Chimie des Matériaux et Catalyse, Département de Chimie, Faculté des Sciences de Tunis, Campus Universitaire Tunis ElManar</s1>
<s2>2092 Tunis</s2>
<s3>TUN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>Institut Charles Gerhardt Montpellier, UMR 5253, CNRS-UM2-ENSCM-UM1, Eq. "Matériaux Avancés pour la Catalyse et la Santé" ENSCM (MACS -Site la Galéra), 8, rue Ecole Normale</s1>
<s2>34296 Montpellier</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
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<fA20><s1>170-179</s1>
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<fA21><s1>2009</s1>
</fA21>
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</fA66>
<fC01 i1="01" l="ENG"><s0>A series of Cr/Al<sub>2</sub>
O<sub>3</sub>
and Co/Al<sub>2</sub>
O<sub>3</sub>
catalysts were tested in the selective ammoxidation of ethylene to acetonitrile. Catalysts were prepared either by sol-gel method or by impregnation with chromium or cobalt acetylacetonate salts. Physicochemical properties of catalysts were accomplished by several techniques such as chemical analysis, physisorption of N<sub>2</sub>
, X-ray diffraction (XRD), <sup>27</sup>
Al MAS NMR, UV-Visible diffuse reflectance (DRS) and Raman spectroscopy and temperature programmed reduction of H<sub>2</sub>
(H<sub>2</sub>
-TPR). Textural analysis reveals that mesoporous materials with pronounced surface areas were obtained using sol-gel procedure while impregnation of the support produces a moderate decrease of its surface area and pore volume. XRD analysis confirms the presence of highly dispersed metal species which reside essentially on the surface and measure less than 4 nm. Furthermore, <sup>27</sup>
Al MAS NMR shows that for xerogels, part of metal species occupies sites on/in Al<sub>2</sub>
O<sub>3</sub>
in close vicinity of octahedral <sup>27</sup>
Al. This, apparently, is not the case for aerogels. For Cr/Al<sub>2</sub>
O<sub>3</sub>
catalysts, isolated Cr<sup>6+</sup>
, mono and polychromate species were identified using DRS, Raman Spectroscopy and H<sub>2</sub>
-TPR which seem to play a key role in the ammoxidation of ethylene. Furthermore, for cobalt doped catalysts, CoAl<sub>2</sub>
O<sub>4</sub>
was identified as active phase on the basis of DRS and H<sub>2</sub>
-TPR results. From the supercritical drying, it results generally better catalysts than catalysts calcined by ordinary procedure which leads to inactive agglomerated Co<sub>3</sub>
O<sub>4</sub>
and COO-Al<sub>2</sub>
O<sub>3</sub>
phase.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>001C01J05</s0>
</fC02>
<fC02 i1="02" i2="X"><s0>001C01A03</s0>
</fC02>
<fC02 i1="03" i2="X"><s0>001C01J08</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Ammonioxydation</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Ammoxidation</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Amonioxidación</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Ethylène</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Ethylene</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Etileno</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Acétonitrile</s0>
<s2>NK</s2>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Acetonitrile</s0>
<s2>NK</s2>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Acetonitrilo</s0>
<s2>NK</s2>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Nitrile</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Nitrile</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Nitrilo</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Chrome</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Chromium</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Cromo</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Cobalt</s0>
<s2>NC</s2>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Cobalt</s0>
<s2>NC</s2>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Cobalto</s0>
<s2>NC</s2>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Alumine</s0>
<s2>NK</s2>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Alumina</s0>
<s2>NK</s2>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Alúmina</s0>
<s2>NK</s2>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Catalyseur</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Catalyst</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Catalizador</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Procédé sol gel</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Sol gel process</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Procedimiento sol gel</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Oxyde d'aluminium</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Aluminium oxide</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Aluminio óxido</s0>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Catalyseur sur support</s0>
<s5>13</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Supported catalyst</s0>
<s5>13</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Catalizador sobre soporte</s0>
<s5>13</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Imprégnation</s0>
<s5>14</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Impregnation</s0>
<s5>14</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Impregnación</s0>
<s5>14</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Propriété physicochimique</s0>
<s5>15</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG"><s0>Physicochemical properties</s0>
<s5>15</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA"><s0>Propiedad fisicoquímica</s0>
<s5>15</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Analyse chimique</s0>
<s5>16</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Chemical analysis</s0>
<s5>16</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Análisis químico</s0>
<s5>16</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE"><s0>Physisorption</s0>
<s5>17</s5>
</fC03>
<fC03 i1="15" i2="X" l="ENG"><s0>Physisorption</s0>
<s5>17</s5>
</fC03>
<fC03 i1="15" i2="X" l="SPA"><s0>Fisisorción</s0>
<s5>17</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE"><s0>Diffraction RX</s0>
<s5>18</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG"><s0>X ray diffraction</s0>
<s5>18</s5>
</fC03>
<fC03 i1="16" i2="X" l="SPA"><s0>Difracción RX</s0>
<s5>18</s5>
</fC03>
<fC03 i1="17" i2="X" l="FRE"><s0>Spectrométrie RMN</s0>
<s5>19</s5>
</fC03>
<fC03 i1="17" i2="X" l="ENG"><s0>NMR spectrometry</s0>
<s5>19</s5>
</fC03>
<fC03 i1="17" i2="X" l="SPA"><s0>Espectrometría RMN</s0>
<s5>19</s5>
</fC03>
<fC03 i1="18" i2="X" l="FRE"><s0>Facteur réflexion</s0>
<s5>20</s5>
</fC03>
<fC03 i1="18" i2="X" l="ENG"><s0>Reflectance</s0>
<s5>20</s5>
</fC03>
<fC03 i1="18" i2="X" l="SPA"><s0>Coeficiente reflexión</s0>
<s5>20</s5>
</fC03>
<fC03 i1="19" i2="X" l="FRE"><s0>Spectrométrie Raman</s0>
<s5>21</s5>
</fC03>
<fC03 i1="19" i2="X" l="ENG"><s0>Raman spectrometry</s0>
<s5>21</s5>
</fC03>
<fC03 i1="19" i2="X" l="SPA"><s0>Espectrometría Raman</s0>
<s5>21</s5>
</fC03>
<fC03 i1="20" i2="X" l="FRE"><s0>Réduction chimique</s0>
<s5>22</s5>
</fC03>
<fC03 i1="20" i2="X" l="ENG"><s0>Chemical reduction</s0>
<s5>22</s5>
</fC03>
<fC03 i1="20" i2="X" l="SPA"><s0>Reducción química</s0>
<s5>22</s5>
</fC03>
<fC03 i1="21" i2="X" l="FRE"><s0>Mésoporosité</s0>
<s5>23</s5>
</fC03>
<fC03 i1="21" i2="X" l="ENG"><s0>Mesoporosity</s0>
<s5>23</s5>
</fC03>
<fC03 i1="21" i2="X" l="SPA"><s0>Mesoporosidad</s0>
<s5>23</s5>
</fC03>
<fC03 i1="22" i2="X" l="FRE"><s0>Matériau poreux</s0>
<s5>24</s5>
</fC03>
<fC03 i1="22" i2="X" l="ENG"><s0>Porous material</s0>
<s5>24</s5>
</fC03>
<fC03 i1="22" i2="X" l="SPA"><s0>Material poroso</s0>
<s5>24</s5>
</fC03>
<fC03 i1="23" i2="X" l="FRE"><s0>Aire superficielle</s0>
<s5>25</s5>
</fC03>
<fC03 i1="23" i2="X" l="ENG"><s0>Surface area</s0>
<s5>25</s5>
</fC03>
<fC03 i1="23" i2="X" l="SPA"><s0>Area superficial</s0>
<s5>25</s5>
</fC03>
<fC03 i1="24" i2="X" l="FRE"><s0>Support</s0>
<s5>26</s5>
</fC03>
<fC03 i1="24" i2="X" l="ENG"><s0>Support</s0>
<s5>26</s5>
</fC03>
<fC03 i1="24" i2="X" l="SPA"><s0>Soporte</s0>
<s5>26</s5>
</fC03>
<fC03 i1="25" i2="X" l="FRE"><s0>Pore</s0>
<s5>27</s5>
</fC03>
<fC03 i1="25" i2="X" l="ENG"><s0>Pore</s0>
<s5>27</s5>
</fC03>
<fC03 i1="25" i2="X" l="SPA"><s0>Poro</s0>
<s5>27</s5>
</fC03>
<fC03 i1="26" i2="X" l="FRE"><s0>Xérogel</s0>
<s5>28</s5>
</fC03>
<fC03 i1="26" i2="X" l="ENG"><s0>Xerogel</s0>
<s5>28</s5>
</fC03>
<fC03 i1="26" i2="X" l="SPA"><s0>Xerogel</s0>
<s5>28</s5>
</fC03>
<fC03 i1="27" i2="X" l="FRE"><s0>Aérogel</s0>
<s5>29</s5>
</fC03>
<fC03 i1="27" i2="X" l="ENG"><s0>Aerogel</s0>
<s5>29</s5>
</fC03>
<fC03 i1="27" i2="X" l="SPA"><s0>Aerógel</s0>
<s5>29</s5>
</fC03>
<fC03 i1="28" i2="X" l="FRE"><s0>Etat supercritique</s0>
<s5>30</s5>
</fC03>
<fC03 i1="28" i2="X" l="ENG"><s0>Supercritical state</s0>
<s5>30</s5>
</fC03>
<fC03 i1="28" i2="X" l="SPA"><s0>Estado supercrítico</s0>
<s5>30</s5>
</fC03>
<fC03 i1="29" i2="X" l="FRE"><s0>Al2O3</s0>
<s4>INC</s4>
<s5>32</s5>
</fC03>
<fC03 i1="30" i2="X" l="FRE"><s0>Al O</s0>
<s4>INC</s4>
<s5>33</s5>
</fC03>
<fC03 i1="31" i2="X" l="FRE"><s0>Co3O4</s0>
<s4>INC</s4>
<s5>34</s5>
</fC03>
<fC03 i1="32" i2="X" l="FRE"><s0>Co O</s0>
<s4>INC</s4>
<s5>35</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Métal transition</s0>
<s2>NC</s2>
<s5>10</s5>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Transition metal</s0>
<s2>NC</s2>
<s5>10</s5>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Metal transición</s0>
<s2>NC</s2>
<s5>10</s5>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Composé binaire</s0>
<s5>11</s5>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Binary compound</s0>
<s5>11</s5>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Compuesto binario</s0>
<s5>11</s5>
</fC07>
<fN21><s1>117</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
</inist>
<affiliations><list><country><li>France</li>
<li>Tunisie</li>
</country>
<region><li>Gouvernorat de Tunis</li>
<li>Languedoc-Roussillon</li>
<li>Occitanie (région administrative)</li>
</region>
<settlement><li>Montpellier</li>
<li>Tunis</li>
</settlement>
</list>
<tree><country name="Tunisie"><region name="Gouvernorat de Tunis"><name sortKey="Ayari, F" sort="Ayari, F" uniqKey="Ayari F" first="F." last="Ayari">F. Ayari</name>
</region>
<name sortKey="Ghorbel, A" sort="Ghorbel, A" uniqKey="Ghorbel A" first="A." last="Ghorbel">A. Ghorbel</name>
<name sortKey="Mhamdi, M" sort="Mhamdi, M" uniqKey="Mhamdi M" first="M." last="Mhamdi">M. Mhamdi</name>
</country>
<country name="France"><region name="Occitanie (région administrative)"><name sortKey="Delahay, G" sort="Delahay, G" uniqKey="Delahay G" first="G." last="Delahay">G. Delahay</name>
</region>
</country>
</tree>
</affiliations>
</record>
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