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• La Bibliothèque Annexe pour les étudiants en
2ème Année CPST
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Détail de l'indexation
M005011
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Ouvrages de la bibliothèque en indexation M005011
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Application de nouveaux matériaux catalytique à la réaction d'alkylation du toluène / Souad Kerchich
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Titre : Application de nouveaux matériaux catalytique à la réaction d'alkylation du toluène Type de document : texte imprimé Auteurs : Souad Kerchich, Auteur ; Khaldoun Bachari, Directeur de thèse Editeur : [S.l.] : [s.n.] Année de publication : 2011 Importance : 98 f. Présentation : ill. Format : 30 cm. Accompagnement : 1 CD-ROM Note générale : Mémoire de Magister : Génie de l'Environnement : Alger, Ecole Nationale Polytechnique : 2011
Bibliogr. [5] fLangues : Français (fre) Mots-clés : Catalyse basique
Chlorure de benzyle
Toluène
Fe-Mg-Al-HDL
Nanocomposites
Relation de HammettIndex. décimale : M005011 Résumé : Dans le présent travail, nous nous sommes particulièrement intéressés à la synthèse de nouveaux matériaux basiques de type hydrotalcites: Fe-Mg-Al-HDL préparés par différentes méthodes de synthèse à savoir la méthode de co-précipitation, imprégnation et une nouvelle méthode dénommée la méthode d’intercalation par échange anionique dans l’espace lamellaire des structures hôtes HDL.
Nos solides préparés, ont été caractérisés par différentes techniques physico-chimiques d’analyse, à savoir, l’analyse chimique, la diffraction des rayons X (DRX), la technique BET, la spectroscopie infrarouge et l’analyse thermique différentiel et Thermogravimétrique (ATD /ATG) et testés dans la réaction d’alkylation du Toluène par le chlorure de benzyle.
Les résultats du test catalytique ont montrés que le catalyseur Mg-Fe-HDL préparé par la nouvelle méthode de synthèse (la méthode d’intercalation) et calciné à 600°C présente de meilleures performances catalytiques dans la réaction d’alkylation du toluène par le chlorure de benzyle, cela est dû probablement à la formation de la phase d’oxyde métallique Fe2O3.
Par ailleurs, nous avons constaté que le mécanisme réactionnel est différent de celui d’un mécanisme acide classique habituellement observé dans les réactions de Friedel-Crafts, ce qui entraîne un autre mécanisme réactionnel c’est le mécanisme redox.
En effet, le cycle Redox est assuré par la réduction et la réoxydation du fer.
Le mécanisme redox a montré une très grande indépendance aux effets électroniques des substituants ainsi qu’aux effets stériques, et par conséquent, ces catalyseurs peuvent être utilisés avec des substrats qui montrent de faibles réactivités.Application de nouveaux matériaux catalytique à la réaction d'alkylation du toluène [texte imprimé] / Souad Kerchich, Auteur ; Khaldoun Bachari, Directeur de thèse . - [S.l.] : [s.n.], 2011 . - 98 f. : ill. ; 30 cm. + 1 CD-ROM.
Mémoire de Magister : Génie de l'Environnement : Alger, Ecole Nationale Polytechnique : 2011
Bibliogr. [5] f
Langues : Français (fre)
Mots-clés : Catalyse basique
Chlorure de benzyle
Toluène
Fe-Mg-Al-HDL
Nanocomposites
Relation de HammettIndex. décimale : M005011 Résumé : Dans le présent travail, nous nous sommes particulièrement intéressés à la synthèse de nouveaux matériaux basiques de type hydrotalcites: Fe-Mg-Al-HDL préparés par différentes méthodes de synthèse à savoir la méthode de co-précipitation, imprégnation et une nouvelle méthode dénommée la méthode d’intercalation par échange anionique dans l’espace lamellaire des structures hôtes HDL.
Nos solides préparés, ont été caractérisés par différentes techniques physico-chimiques d’analyse, à savoir, l’analyse chimique, la diffraction des rayons X (DRX), la technique BET, la spectroscopie infrarouge et l’analyse thermique différentiel et Thermogravimétrique (ATD /ATG) et testés dans la réaction d’alkylation du Toluène par le chlorure de benzyle.
Les résultats du test catalytique ont montrés que le catalyseur Mg-Fe-HDL préparé par la nouvelle méthode de synthèse (la méthode d’intercalation) et calciné à 600°C présente de meilleures performances catalytiques dans la réaction d’alkylation du toluène par le chlorure de benzyle, cela est dû probablement à la formation de la phase d’oxyde métallique Fe2O3.
Par ailleurs, nous avons constaté que le mécanisme réactionnel est différent de celui d’un mécanisme acide classique habituellement observé dans les réactions de Friedel-Crafts, ce qui entraîne un autre mécanisme réactionnel c’est le mécanisme redox.
En effet, le cycle Redox est assuré par la réduction et la réoxydation du fer.
Le mécanisme redox a montré une très grande indépendance aux effets électroniques des substituants ainsi qu’aux effets stériques, et par conséquent, ces catalyseurs peuvent être utilisés avec des substrats qui montrent de faibles réactivités.Exemplaires
Code-barres Cote Support Localisation Section Disponibilité Spécialité Etat_Exemplaire M005011A M005011 Papier Bibliothèque centrale Mémoire de Magister Disponible M005011B M005011 Papier Bibliothèque centrale Mémoire de Magister Disponible Documents numériques
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