Different titanium-containing hybrid mesoporous materials have been successfully synthesized from cyclopentadienyl or alkoxo titanium derivatives as titanium sources. The immobilization of the titanium complex has been carried out by grafting or tethering method in order to compare the catalytic performance of each process. Furthermore, two different capped agents have been used to silylate the support surface in order to increase the hydrophobic character of the final catalyst. In chapter 6 it would be evaluated if the choice of the capped agent employed has consequences in the activity of the catalyst in determined epoxidation reactions.
- Cover
- Title page
- Copyright page
- Contents
- Index of Figures
- Index of Tables
- Index of Schemes
- Chapter 1. Introduction
- 1.1 CATALYSIS
- 1.2 ENANTIOSELECTIVE CATALYSIS
- 1.2.1 Chirality and Enantioselective Catalysis
- 1.3 CATALYTIC OXIDATION
- 1.3.1 Olefin Epoxidation
- 1.3.2 Applications of Epoxides
- 1.3.3 Asymmetric Epoxid
- 1.3.4 Alcohol Oxidation
- 1.4 MESOSTRUCTURED MATERIALS
- 1.4.1 Organically Modification of Mesostructured Materials
- 1.4.2 Grafting, Tethering and Framework Incorporation of Metal Complexes
- 1.4.3 Heterogeneous Oxidation Catalysts
- 1.5 REFERENCES
- Chapter 2. Characterization Techniques
- 2.1 METHODOLOGY
- 2.2 INSTRUMENTATION TECHNIQUES
- 2.2.1 Spectroscopic Techniques
- 2.2.2 Other techniques
- 2.3 REFERENCES
- Chapter 3. Hybrid Materials
- 3.1 INTRODUCTION
- 3.2 RESULTS AND DISCUSSION
- 3.2.1 Preparation and Characterization of Alkoxysilane Ligands
- 3.2.2 Preparation and Characterization of the MCM-41
- 3.2.3 Preparation and Characterization of the Functionalized Materials
- 3.3 EXPERIMENTAL
- 3.3.1 Reagents and Materials
- 3.3.2 Synthesis of MCM-41 Mesoporous Silica
- 3.3.3 Synthesis of the Organic Ligands
- 3.3.4 Functionalization of MCM-41
- 3.4 CONCLUSIONS
- 3.5 REFERENCES
- Chapter 4. Titanium-Containing Hybrid Materials
- 4.1 INTRODUCTION
- 4.2 RESULTS AND DISCUSSION
- 4.2.1 Characterization of Titanium Tetraisopropoxide Derivated Heterogeneous Catalysts
- 4.2.2 Characterization of Chiral Titanium tetraisopropoxide derivated heterogeneous catalysts
- 4.2.3 Characterization of Cyclopentadienyl Titanium Trichoride Derivated Heterogeneous Catalysts
- 4.2.4 Ti MAS NMR Characterization of the Titanium-Containing Hybrid Materials
- 4.3 EXPERIMENTAL
- 4.3.1 Reagents and Materials
- 4.3.2 Synthesis of Titanium Tetraisopropoxide Derivated Heterogeneous Catalysts
- 4.3.3 Synthesis of Cyclopentadienyl Titanium Trichoride Derivated Heterogeneous Catalysts
- 4.4 CONCLUSIONS
- 4.5 REFERENCES
- Chapter 5. Copper-Containing Hybrid Materials
- 5.1 INTRODUCTION
- 5.2 RESULTS AND DISCUSSION
- 5.2.1 Characterization of the Materials
- 5.3 EXPERIMENTAL
- 5.3.1 Reagents and Materials
- 5.3.2 Synthesis of Copper Containing Heterogenerous Catalyst
- 5.4 CONCLUSIONS
- 5.5 REFERENCES
- Chapter 6. Olefin Epoxidation
- 6.1 INTRODUCTION
- 6.1.1 Olefins Epoxidation
- 6.1.2 Asymmetric Epoxidation
- 6.2 RESULTS AND DISCUSSION Catalytic epoxidation reactions with di
- 6.2.1 Cyclohexene Epoxidation
- 6.2.2 1-Octene Epoxidation
- 6.2.3 Styrene Epoxidation
- 6.2.4 Asymmetric Epoxidation of Cynnamyl Alcohol
- 6.3 EXPERIMENTAL
- 6.3.1 Reagents and Materials
- 6.3.2 Experimental Conditions for the Catalytic Epoxidation of Olefins
- 6.3.3 Experimental Conditions for Catalytic Asymmetric Epoxidation of Cinnamyl Alcohol with Heterogeneous Catalysts
- 6.3.4 Experimental Conditions for Catalytic Asymmetric Epoxidation of Cinnamyl Alcohol with Homogeneous Catalysts
- 6.4 CONCLUSIONS
- 6.5 REFERENCES
- Chapter 7. Alcohol Oxidation
- 7.1 INTRODUCTION: CATALYTIC BENZYL ALCOHOL OXIDATION
- 7.2 RESULTS AND DISCUSSION
- 7.2.1 Benzyl Alcohol Oxidation with Catalysts Synthesized in Organic Media
- 7.2.2 Benzyl Alcohol Oxidation with Catalysts Synthesized in Aqueous Media
- 7.3 EXPERIMENTAL
- 7.3.1 Reagents and Materials
- 7.3.2 Experimental Conditions for the Catalytic Benzyl Alcohol Oxidation
- 7.4 CONCLUSIONS
- 7.5 REFERENCES
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