Sökning: "Acid catalyst"
Visar resultat 16 - 20 av 147 avhandlingar innehållade orden Acid catalyst.
16. Selective transfer hydrogenations : Catalyst development and mechanistic investigations
Sammanfattning : By generating a library of amino acid-based ligands, pseudo-dipeptides, and combining them with transition metals, we have created selective and efficient ruthenium and rhodium catalysts for the asymmetric transfer hydrogenation of ketones. The ruthenium-catalyzed reaction was studied in detail, and we found that alkali metals play a crucial role for the reactivity and selectivity of the reaction. LÄS MER
17. Efficient Synthesis and Analysis of Chiral Cyanohydrins
Sammanfattning : This thesis deals with the development of new methods for efficient synthesis and analysis in asymmetric catalysis. It focuses on the preparation of chiral cyanohydrins by enantioselective addition of cyanide to prochiral aldehydes. LÄS MER
18. Hydrolytic and oxidative catalytic activities of bio-inspired dinuclear metal complexes
Sammanfattning : A number of homo- and heterodinuclear complexes have been synthesized as structural and functional models for the the active sites of phosphoesterases and soluble methane monooxygenases. The complexes are based on four new dinucleating ligands containing a central, potentially bridging, phenolate moiety. LÄS MER
19. Mild Wet Torrefaction and Characterization of Woody Biomass from Mozambique for Thermal Applications
Sammanfattning : Mozambique has vast forestry resources and also considerable biomass waste material such as bagasse, rice husks, sawdust, coconut husks and shells, cashew nut shell and lump charcoal waste. The potential of the total residues from the agricultural sector and the forest industry is estimated to be approximately 13 PJ. LÄS MER
20. Exploring fatty acid derivatives from renewable resources as raw materials for coating applications
Sammanfattning : In the work presented herein, epoxy fatty acid derivatives were explored in the formation of thermosets for coating applications. The epoxy fatty acid derivatives were obtained from renewable resources such as birch tree bark and epoxidized linseed oil. LÄS MER