Controlled synthesis and characterization of ru-fullerene nanostructures and their catalytic applications / Faqiang Leng  

Public ISBD Titre : Controlled synthesis and characterization of ru-fullerene nanostructures and their catalytic applications Type de document : texte imprimé Auteurs : Faqiang Leng, Auteur ; Philippe Serp, Directeur de thèse ; Maria Rosa Axet Marti, Directeur de thèse Année de publication : 2016 Langues : Anglais (eng) Tags : RUTHENIUM  NANOPARTICLES  C60  C66(COOH)12  CATALYSIS, HYDROGENATION  NITROBENZENE  CINNAMALDEHYDE Résumé : "The work described in this thesis aims to produce well-ordered nanostructures presenting high catalytic activity, on the bases of the assembly of ruthenium nanoparticles and fullerene/functionalized fullerene. Chapter 1 provides a review on the use of fullerene and fullerene-based materials in heterogeneous catalysis, emphasizing their specific properties such as thermal stability, high capacity for hydrogen adsorption and the ability of various coordination modes. Chapter 2 describes the synthesis and characterization of Ru@C60 nanostructures produced by the decomposition reaction of [Ru(COD)(COT)] in the presence of C60. The effect of the solvent and ratios of Ru/C60 on the course of the reaction have been investigated. Several characterizations of spherical Ru@C60 objects and DFT calculations allow us to propose a pathway for their formation. Chapter 3 presents new nano-assembly preparation based on [Ru(COD)(COT)] and functionalized fullerene using the same method as they are described in chapter 2. First, the synthesis of functionalized fullerene C66(COOH)12 is detailed, and then the synthesis and characterization of Ru@C66(COOH)12 is studied. Chapter 4 describes the use of these nanomaterials in catalysis. We have prepared three Ru@fullerene catalysts, which are Ru@C60 in dichloromethane, T-Ru@C60 in toluene, and Ru@C66(COOH)12. Then, the catalytic activity and selectivity of the prepared catalyst Ru@C60, T-Ru@C60 and Ru@C66(COOH)12 are studied for the hydrogenation of nitrobenzene and cinnamaldehyde. DFT calculations allow to rationalize the results obtained for the selective hydrogenation of nitrobenzene over Ru@C60." Document : Thèse de doctorat Etablissement_delivrance : Institut National Polytechnique de Toulouse - INPT Date_soutenance : 06/10/2016 Ecole_doctorale : École doctorale Sciences de la Matière (Toulouse) Domaine : Chimie organométallique de coordination En ligne : https://oatao.univ-toulouse.fr/16619/ Controlled synthesis and characterization of ru-fullerene nanostructures and their catalytic applications [texte imprimé] / Faqiang Leng, Auteur ; Philippe Serp, Directeur de thèse ; Maria Rosa Axet Marti, Directeur de thèse . - 2016. Langues : Anglais (eng) Tags : RUTHENIUM  NANOPARTICLES  C60  C66(COOH)12  CATALYSIS, HYDROGENATION  NITROBENZENE  CINNAMALDEHYDE Résumé : "The work described in this thesis aims to produce well-ordered nanostructures presenting high catalytic activity, on the bases of the assembly of ruthenium nanoparticles and fullerene/functionalized fullerene. Chapter 1 provides a review on the use of fullerene and fullerene-based materials in heterogeneous catalysis, emphasizing their specific properties such as thermal stability, high capacity for hydrogen adsorption and the ability of various coordination modes. Chapter 2 describes the synthesis and characterization of Ru@C60 nanostructures produced by the decomposition reaction of [Ru(COD)(COT)] in the presence of C60. The effect of the solvent and ratios of Ru/C60 on the course of the reaction have been investigated. Several characterizations of spherical Ru@C60 objects and DFT calculations allow us to propose a pathway for their formation. Chapter 3 presents new nano-assembly preparation based on [Ru(COD)(COT)] and functionalized fullerene using the same method as they are described in chapter 2. First, the synthesis of functionalized fullerene C66(COOH)12 is detailed, and then the synthesis and characterization of Ru@C66(COOH)12 is studied. Chapter 4 describes the use of these nanomaterials in catalysis. We have prepared three Ru@fullerene catalysts, which are Ru@C60 in dichloromethane, T-Ru@C60 in toluene, and Ru@C66(COOH)12. Then, the catalytic activity and selectivity of the prepared catalyst Ru@C60, T-Ru@C60 and Ru@C66(COOH)12 are studied for the hydrogenation of nitrobenzene and cinnamaldehyde. DFT calculations allow to rationalize the results obtained for the selective hydrogenation of nitrobenzene over Ru@C60." Document : Thèse de doctorat Etablissement_delivrance : Institut National Polytechnique de Toulouse - INPT Date_soutenance : 06/10/2016 Ecole_doctorale : École doctorale Sciences de la Matière (Toulouse) Domaine : Chimie organométallique de coordination En ligne : https://oatao.univ-toulouse.fr/16619/

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