Search for dissertations about: "heterogeneous catalysis"

Showing result 16 - 20 of 93 swedish dissertations containing the words heterogeneous catalysis.

  1. 16. Development of Catalytic Enantioselective Approaches for the Synthesis of Carbocycles and Heterocycles

    Author : Luca Deiana; Armando Córdova; Andrei Malkov; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Organocatalysis; Asymmetric Catalysis; Heterogeneous Catalysis; Aziridines; Pyrazolidines; Cyclopentanes; Organic Chemistry; organisk kemi;

    Abstract : In biological systems, most of the active organic molecules are chiral. Some of the main constituents of living organisms are amino acids and sugars. They exist predominantly in only one enantiomerically pure form. READ MORE

  2. 17. Advances in Stereoselective Palladium(ΙΙ)-Catalyzed Oxidative Transformations of Allenes

    Author : Daniels Posevins; Jan-Erling Bäckvall; Troels Skrydstrup; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Synthesis; Palladium Catalysis; Allenes; Biomimetic; Carbocyclization; Borylation; Carbonylation; Oxidation; Heterogeneous; Organic Chemistry; organisk kemi;

    Abstract : Palladium(ΙΙ)-catalyzed carbon-carbon and carbon-heteroatom bond formation via selective C-H bond oxidation constitutes a step-economical and versatile approach towards complex target molecules. This thesis has been focused on the development of new selective palladium(ΙΙ)-catalyzed transformations of allenes under oxidative conditions catalyzed by either homogenous or heterogeneous palladium(ΙΙ) catalysts. READ MORE

  3. 18. Palladium Catalysis in Directed C-H Bond Activation and Cycloisomerisation Reactions

    Author : Michael Oschmann; Jan-Erling Bäckvall; Oscar Verho; Jose Luis Mascareñas; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Palladium II ; Catalysis; C-H Functionalisation; Transamidation; XAS; Organic Chemistry; organisk kemi;

    Abstract : The main focus of this thesis concerns the development of Pd(II)-catalysed synthetic methodologies for the preparation of biologically active compounds.In the first part (paper I-III), unactivated C–H bonds of a cyclobutane derivative are selectively functionalised using a directing group starting from the feedstock compound verbenone (paper I). READ MORE

  4. 19. Laser diagnostics and modeling of the coupling between heterogeneous catalytic and gas-phase oxidation of hydrogen

    Author : Michael Försth; Chalmers University of Technology; []
    Keywords : stagnation flow; hydroxyl; planar LIF; surface reactions; gas-phase chemistry; Chemkin; platinum; catalysis; OH; ignition conditions;

    Abstract : .... READ MORE

  5. 20. Surface reactions and chemical bonding in heterogeneous catalysis

    Author : Henrik Öberg; Lars G. M. Pettersson; Philippe Sautet; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; kemisk fysik; Chemical Physics;

    Abstract : This thesis summarizes studies which focus on addressing, using both theoretical and experimental methods, fundamental questions about surface phenomena, such as chemical reactions and bonding, related to processes in heterogeneous catalysis. The main focus is on the theoretical approach and this aspect of the results. READ MORE