Search for dissertations about: "iron catalyst"

Showing result 6 - 10 of 71 swedish dissertations containing the words iron catalyst.

  1. 6. Functional Models for Non-heme Mononuclear Iron Oxygenases

    Author : Mainak Mitra; Kemisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bioinorganic chemistry; Iron; Oxygenases; Catalysis;

    Abstract : Non-heme mononuclear iron oxygenases catalyze a large number of oxidation reactions in biological systems. The reactions are often proposed to proceed via the intermediacy of high valent Fe(IV) oxo (ferryl) or, Fe(V) oxo (perferryl) intermediates. READ MORE

  2. 7. Deactivation of Catalysts and Reaction Kinetics for Upgrading of Renewable Oils

    Author : Prakhar Arora; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY; HVO; Kinetic modeling; Catalyst deactivation; NiMo; Advanced biofuels; Catalyst; Hydrodeoxygenation;

    Abstract : The transport sector is one of the main contributors of greenhouse gas emissions in the world. Advanced biofuels from renewable oils can play a decisive role in reducing carbon emissions from the transport sector. Advanced biofuels from waste streams like tall oil, used cooking oil etc. READ MORE

  3. 8. Iron or Copper? - Method Development and Mechanistic Studies on Cross-Coupling Reactions

    Author : Per-Fredrik Larsson; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Keywords : Iron; Copper; Transition metal; Cross-coupling; Reaction mechanism; Kinetic investigation; Hammett study; Sustainable catalysis; Trace-metal; Mass-transfer; Ligand development; Ligand scope;

    Abstract : The area of catalysis has had an immeasurable impact on modern society. This has been acknowledged through several Nobel prizes during the 20th century ranging from Haber (1918) for the synthesis of ammonia to Richard F. Heck, Ei-ichi Negishi, and Akira Suzuki (2010) for palladium-catalyzed cross-coupling reactions. READ MORE

  4. 9. Iron, Manganese and Iridium Complexes From Models of RNR and Catalase to Water Oxidation

    Author : Michele Bedin; Anders Dr. Thapper; Sascha Prof. Ott; Vadim G. Kessler; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Iron; manganese; MnCAT; RNR; biomimetic; Kemi; Chemistry;

    Abstract : The focus of this thesis has been synthesise and study metal complexes that mimic the structure and function of the active site in two particular metalloenzymes, ribonucleotide reductase (RNR) and manganese catalase (MnCAT). These two metalloenzymes both have two transition metals ions in the cofactor: two manganese ions in MnCAT and either two iron, iron-manganese or two manganese ions in RNR. READ MORE

  5. 10. Iron-Catalyzed Reactions and X-Ray Absorption Spectroscopic Studies of Palladium- and Ruthenium-Catalyzed Reactions

    Author : Arnar Guðmundsson; Jan-Erling Bäckvall; Hans-Joachim Knölker; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Iron; XAS; Cycloisomerization; DKR; Oxidation; organisk kemi; Organic Chemistry;

    Abstract : The focus of this thesis is twofold: The first is on the application of iron catalysis for organic transformations. The second is on the use of in situ X-ray absorption spectroscopy (XAS) to investigate the mechanisms of a heterogeneous palladium-catalyzed reaction and a homogeneous ruthenium-catalyzed reaction. READ MORE