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[null,"1.","Record Nr.",null,"UNISA996499864803316"]
[null,null,"Autore",null,"Kapil Nidhi"]
[null,null,"Titolo",null,"Stable supported gold nanoparticle catalyst for environmentally responsible propylene epoxidation / / Nidhi Kapil"]
[null,null,"Pubbl/distr/stampa",null,"Cham, Switzerland : , : Springer, , [2022]"]
[{"$nulls":4},"©2022"]
[null,null,"ISBN",null,"9783031150661"]
[{"$nulls":4},"9783031150654"]
[null,null,"Descrizione fisica",null,"1 online resource (212 pages)"]
[null,null,"Collana",null,"Springer Theses"]
[null,null,"Disciplina",null,"338.4"]
[null,null,"Soggetti",null,"Catalysts industry"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Includes index."]
[null,null,"Nota di contenuto",null,"Intro -- Supervisor's Foreword -- Abstract -- Publications Related to This Thesis -- Acknowledgements -- Declaration -- Contents -- Abbreviations -- 1 Introduction -- 1.1 Importance of Propylene Oxide and Its Production -- 1.2 Chlorohydrin Process (CHPO) -- 1.3 The Hydroperoxide Process -- 1.4 The Hydrogen Peroxide to Propylene Oxide (HPPO) Process -- 1.5 Gold Nanoparticle-Based Catalysis and Direct Gas Phase Epoxidation -- 1.5.1 Introduction to Gold Nanoparticles and Their Properties -- 1.5.2 Gold Nanoclusters -- 1.5.3 Catalytic Properties of Gold NCs/NPs -- 1.5.4 Interaction of Gold NCs/NPs with Different Oxide Supports -- 1.5.5 Synthesis of Supported NCs/NPs -- 1.5.6 Synthetic Methods for Gold Nanoparticles/Nanoclusters -- 1.5.7 Characterisation Techniques and Methods -- 1.5.8 Direct Gas Phase Epoxidation Reaction -- 1.5.9 Reaction Mechanism -- 1.5.10 Recent Catalyst Development for Direct Gas Phase Epoxidation -- 1.6 Direct Oxidation Using Molecular Oxygen -- 1.7 Epoxidation by Nitrous Oxide -- 1.8 Conclusion and Challenges -- 1.9 Aims and Objective of This Thesis -- References -- 2 Propylene Epoxidation Reactor Design -- 2.1 Introduction -- 2.2 Materials and Methods -- 2.3 Safety -- 2.3.1 Hazard 1. Fire -- 2.3.2 Hazard 2. Gases in Cylinders -- 2.4 Designing and Calibration -- 2.4.1 Reactor Assembly -- 2.4.2 Reactor -- 2.4.3 Gas Chromatography -- 2.5 Analysis -- 2.6 Conclusion -- References -- 3 Synthesis of Gold Cluster-Based Catalyst and the Effect of Pre-Treatments on Its Catalytic Performance -- 3.1 Introduction -- 3.2 Experimental -- 3.2.1 Chemicals -- 3.2.2 Synthesis of Phosphine-Bound Gold Clusters -- "]
[{"$nulls":4},"3.2.3 Synthesis of Titanium Silicalite-1 (TS-1) Support -- 3.2.4 Synthesis of Gold Clusters in a Continuous Flow -- 3.2.5 Catalyst Preparation: Colloidal Immobilisation -- 3.2.6 Catalyst Characterisation -- 3.2.7 Catalytic Testing."]
[{"$nulls":4},"3.3 Results and Discussions -- 3.3.1 Synthesis of Gold Clusters and Characterisation -- 3.3.2 Immobilisation of Gold Clusters onto TS-1 -- 3.4 Catalytic Performance of Au/TS-1 Catalyst -- 3.5 Conclusion -- References -- 4 Supported Gold Clusters as a Stable Catalyst for Propylene Epoxidation -- 4.1 Introduction -- 4.2 Experimental -- 4.2.1 Catalyst Preparation -- 4.2.2 Catalyst Characterisation -- 4.3 Results and Discussion -- 4.3.1 Catalyst Synthesis and Characterisation -- 4.3.2 Catalytic Performance of Au/TS-1 -- 4.3.3 Performance of Au/TS-1PT Catalyst Over Longer Times on Stream -- 4.3.4 Investigation of Factors Underpinning the Enhanced Stability -- 4.4 Conclusion -- References -- 5 Tailoring Gold Nanoparticles with Tunable Core Size and Their Catalytic Applications -- 5.1 Introduction -- 5.2 Experimental -- 5.2.1 Materials -- 5.2.2 Synthesis of Gold Nanoparticles-P1 -- 5.2.3 Synthesis of Gold Nanoparticles-P2 -- 5.2.4 Synthesis of Gold Nanoparticles-P3 -- 5.2.5 Synthesis of Supported Gold Catalyst -- 5.3 Results and Discussion -- 5.3.1 Synthesis and Characterisation of Gold Nanoparticles -- 5.3.2 Immobilisation of AuNPs onto TS-1 -- 5.3.3 The Catalytic Activity of Supported AuNPs -- 5.4 Conclusion -- References -- 6 Propylene Epoxidation on Au/Ti-Containing Supports: The Effect of the Support -- 6.1 Introduction -- 6.2 Experimental -- 6.2.1 Materials -- 6.2.2 Synthesis of TS-1 -- 6.2.3 Synthesis of m-TS-1 -- 6.2.4 Synthesis of MCM-41 -- 6.2.5 Synthesis of SBA-15 -- 6.2.6 Grafting of Ti on SBA-15 and MCM-41 -- 6.2.7 Synthesis of Phosphine Bound Gold Clusters -- 6.2.8 Purification of Synthesised Au Clusters -- 6.2.9 Immobilisation of Au onto Various Supports -- 6.2.10 Characterisation -- 6.3 Results and Discussion -- 6.3.1 Synthesis and Characterisation of Supports -- 6.3.2 Immobilisation of Au Clusters on the Supports."]
[{"$nulls":4},"6.3.3 Catalytic Performance of Supported Au Catalyst -- 6.3.4 Analysis of the Spent Catalyst -- 6.4 Conclusion -- References -- 7 Controlled Engineering of Supported Metal Nanoparticles Using Electrospraying: Robust Removal of Stabilising Ligands -- 7.1 Introduction -- 7.2 Experimental -- 7.2.1 Materials -- 7.2.2 Synthesis of Metal Nanoparticles -- 7.2.3 Immobilisation of Metal NPs onto Various Supports -- 7.2.4 Electrochemical Measurements -- 7.3 Results and Discussion -- 7.3.1 Synthesis and Characterisation of Au and Ag Nanoparticles -- 7.3.2 Synthesis and Characterisation of AuPd Bimetallic Nanoparticles -- 7.3.3 Synthesis and Characterisation of Supported Metal Nanoparticles -- 7.3.4 Preparation of Au/TS-1 Catalyst -- 7.3.5 Immobilisation of AuPd Bimetallic Nanoparticles -- 7.4 Conclusion -- References -- 8 Conclusions and Future Work -- 8.1 Conclusions -- 8.2 Future Work and the Bigger Picture -- 8.2.1 Investigation of Au Loading and Ti/Si Ratio -- 8.2.2 Bimetallic Nanoparticles for Enhanced Propylene Epoxidation -- 8.2.3 Nanoconfinement Effects in Catalysis -- 8.2.4 Electrospraying Technique for the Synthesis of Bimetallic Nanoparticles -- 8.2.5 Antimicrobial Properties of the Au Clusters -- References -- Appendix -- About the Author."]