Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 17 of 17 for “"Catalysi"”.
-
Theoretical models for the electrochemical reduction of CO2 on copper catalysts under working conditions
CO2 reduction is the only process which can generate green fuels with a net negative impact in CO2 emissions. Therefore, the future development of our society needs an industrial scale up of this technology, involving the production of heavily used chemicals such as ethylene. Copper is a unique …
-
Single metal atom catalysts for the electrochemical reduction of CO2
L'abstract è presente nell'allegato / the abstract is in the attachment
-
CONTINUOUS-FLOW STRATEGIES FOR THE PREPARATION OF ACTIVE PHARMACEUTICAL INGREDIENTS AND RELEVANT INTERMEDIATES
… technologies such as flow chemistry, photoredox catalysis, ultrasound, and electrochemistry. In the first part, palladium-catalyzed cross-coupling reactions involving highly reactive organolithium reagents are investigated under continuous-flow conditions, demonstrating how precise control of …
-
DESIGN OF NOVEL MATERIALS FOR PHOTO-THERMO-CATALYTIC SOLAR FUELS PRODUCTION
… has emerged as a highly promising route. Photocatalysis, which uses light to drive chemical reactions, offers a sustainable approach, but it faces significant limitations, primarily due to the low efficiency of light absorption and conversion by conventional semiconductor catalysts with wide …
-
DEVELOPMENT OF BASE METAL-CATALYZED HYDROGEN TRANSFER AND CROSS-COUPLING REACTIONS
… less toxic and less expensive base metals in catalysis is a research topic of growing importance. The work of this thesis is focused on (i) the use of iron catalysts for reactions involving hydrogen transfer and (ii) the development of nickel-catalysed C-heteroatom coupling reactions following …
-
Reductive depolymerization of lignin into valuable products
L'abstract è presente nell'allegato / the abstract is in the attachment
-
SOLID-SUPPORTED PORPHYRINS FOR CATALYSIS AND SENSING
… with different applications in sensor and catalysis fields. CHAPTER 2: AZOBENZENE SYNTHESIS PROMOTED BY CoTPP The first part of the thesis was devoted to the synthesis of azobenzenes, valuable compounds largely applied in textile, medical, and dye industries by a dehydrogenative coupling of …
-
CO AND CO2 HYDROGENATION BY FISCHER TROPSCH SYNTHESIS PROMOTED WITH IRON BASED HETEROGENEOUS CATALYSIS: DATA COLLECTION AND PROCESS DESIGN
The reduction of CO2 emissions into the atmosphere has become a global priority, given the crucial role of this greenhouse gas in climate change. A promising approach to mitigate CO2 is its conversion into fuels and chemicals through processes such as Fischer–Tropsch (FT) synthesis. Traditionally, …
-
Ceramic & Metallic Open Cell Foams for the Lean Methane Combustion Reaction: Exploring the Impact of Catalytic Supports
L'abstract è presente nell'allegato / the abstract is in the attachment
-
FREE-BASE PORPHYRIN FOR CO2 ACTIVATION
Chapter I: Introduction The human influence in the raise of the atmospheric concentration of carbon dioxide registered in the last decades up to the actual alarming situation is clear. The most evident consequence is the global warming, but this is only one of the problems correlated to emissions …
-
SELECTIVE OXIDATION OF CYCLOHEXANE TO K-A OIL USING HETEROGENEOUS CATALYSTS
This doctoral thesis framed the co-supervision agreement (co-tutela) between the Universities of Milan and Cádiz. My thesis project was aimed at the development of innovative heterogeneous catalysts for the selective oxidation of cyclohexane to KA oil. Among the materials employed, supported and …
-
SYNTHESIS OF N-HETEROCYCLES VIA PALLADIUM-CATALYZED REDUCTIVE CYCLIZATION REACTIONS OF NITROARENES AND NITROALKENES USING FORMIC ACID DERIVATIVES AS CO SURROGATES
The reductive cyclization reaction of nitroarenes to produce N-heterocycles has been investigated for more than four decades using CO as a cheap reductant, but it is still a fascinating area for research and advancements. On the other hand, using toxic CO gas is accompanied by many …
-
DEVELOPMENT OF PRECIOUS METAL-FREE, LIGHT-ENABLED SYNTHETIC METHODOLOGIES
… the benefit that this technique can give to photocatalysis, ensuring an easy scale up and limiting the reaction time.
-
STRUCTURE-ACTIVITY RELATIONSHIPS OFHETEROGENEOUS CATALYSTS FOR THE LIQUID-PHASE H2PRODUCTION FROM NITROGEN-HYDRIDES
… lies at the heart of modern research in catalysis, and requires comprehensive approaches combining experiments, characterizations and theoretical knowledge. The methods used in this work are thoroughly presented in Chapter 2. Knowledge of catalytic materials is critical to achieve the …
-
BRIDGING EXPERIMENT AND THEORY IN PORPHYRIN CHEMISTRY: DEVELOPING MATERIALS FOR SENSING, OPTICAL, AND CATALYTIC TECHNOLOGIES
… new molecular architectures for applications in catalysis, sensing, solar energy conversion, and nonlinear optics (NLO). In all these fields, enhanced charge-transfer characteristics play a key role, and this requirement has guided the rational design of the systems developed during my doctoral …
-
EXPLORING THE ROLE OF METAL VARIABILITY IN MOFS USING SYNCHROTRON RADIATION TECHNIQUES
… for applications ranging from gas storage to catalysis. This thesis explores the intricate relationship between MOF structure, metal composition, and functional properties, with a particular focus on multi-metal systems and their tunability. In detail, a set of coupled techniques, leveraging …
-
Nanostructured Catalysts for Green Fuels Production: Electrochemical Synthesis of NH3 and H2 [Catalizzatori nanostrutturati per la produzione di Green Fuels: sintesi elettrochimica di NH3 e H2]
L'ammoniaca (NH3) è ampiamente utilizzata in molti settori, dall'agricoltura alla farmaceutica, ed è recentemente emersa come un promettente vettore di energia carbon-free grazie al suo alto contenuto di idrogeno. Tradizionalmente, la produzione di ammoniaca si basa sul processo Haber-Bosch, che …