Search for dissertations about: "Manganese complex"

Showing result 1 - 5 of 48 swedish dissertations containing the words Manganese complex.

  1. 1. Dinuclear Manganese Complexes for Artificial Photosynthesis Synthesis and Properties

    University dissertation from Stockholm : Institutionen för organisk kemi

    Author : Magnus Anderlund; Björn Åkermark; William H. Armstrong; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Crystal Structure; Artificial photosynthesis; Manganese complex; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Abstract : This thesis deals with the synthesis and characterisation of a series of dinuclear manganese complexes. Their ability to donate electrons to photo-generated ruthenium(III) has been investigated in flash photolysis experiments followed by EPR-spectroscopy. READ MORE

  2. 2. Mimicking Nature – Synthesis and Characterisation of Manganese Complexes of Relevance to Artificial Photosynthesis

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Gustav Berggren; F. Magnus Anderlund; Leif Hammarström; Vincent Pecoraro; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Manganese; biomimetic; artificial photosynthesis; water splitting; homogeneous catalysis; MEDICINE Chemistry; MEDICIN Kemi; fysikalisk kemi; Physical Chemistry;

    Abstract : The development of efficient catalyst for water oxidation is of paramount importance to artificial photosynthesis, but before this can be achieved a deeper understanding of this reaction is essential. In nature this reaction occurs in a tetranuclear Mn-cluster which serves as the work-horse of oxygenic photosynthesis. READ MORE

  3. 3. Photosynthetic Oxygen Evolution - EPR studies of the manganese cluster of photosystem II

    University dissertation from Sindra Peterson, Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University

    Author : Sindra Peterson Årsköld; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; S2 state; second cycle; Biochemistry; Metabolism; Biokemi; metabolism; S0 state; light-adaptation; pulsed EPR; methanol; relaxation; microwave power saturation; S-cycle; Oxygen-evolving complex; Water-oxidizing complex;

    Abstract : In this thesis, a new electron paramagnetic resonance (EPR) signal from photosystem II is presented. The signal is shown to originate from the S0 oxidation state of the oxygen-evolving complex (OEC). READ MORE

  4. 4. Manganese ores as oxygen carriers for chemical-looping combustion

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Sebastian Sundqvist; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical-looping with oxygen uncoupling; gaseous fuel; methane; syngas; Chemical-looping combustion; manganese ores; combined oxides; wood char and solid fuels;

    Abstract : Chemical looping combustion (CLC) is a fluidized bed system that circulates metal oxide particles in order to transport oxygen from an air reactor to a fuel reactor. In the fuel reactor a fuel reduces the oxygen carrier while producing CO2 and H2O. The oxygen carrier is then transported back to the air reactor and reoxidized. READ MORE

  5. 5. Biomimetic Reactions Water Oxidation and Aerobic Oxidation

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Lien-Hoa Tran; Björn Åkermark; Nina Kann; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cobalt II salophen; oxygen-activating catalyst; hybrid; manganese complex; epoxidation; water oxidation.; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi; Organic Chemistry; organisk kemi;

    Abstract : This thesis deals mainly with two oxidation reactions: water oxidation and aerobic oxidation, both of which have been applied in a biomimetic fashion. In the former reaction molecular oxygen is generated whereas in the latter it was used as terminal oxidant in oxidation reactions. READ MORE