Sökning: "oxygen transfer rate"

Visar resultat 1 - 5 av 46 avhandlingar innehållade orden oxygen transfer rate.

  1. 1. Catalysts for Oxygen Production and Utilization Closing the Oxygen Cycle: From Biomimetic Oxidation to Artificial Photosynthesis

    Detta är en avhandling från Stockholm : Department of Organic Chemistry, Stockholm University

    Författare :Erik Karlsson; Stockholms universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; oxygen; catalytic oxidation; biomimetic oxidation; artificial photosynthesis; water oxidation; DFT calculations; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi; Organic Chemistry; organisk kemi;

    Sammanfattning : This thesis describes the development and study of catalysts for redox reactions, which either utilize oxygen or hydrogen peroxide for the purpose of selectively oxidizing organic substrates, or produce oxygen as the necessary byproduct in the production of hydrogen by artificial photosynthesis.The first chapter gives a general introduction about the use of environmentally friendly oxidants in the field of organic synthesis, and about the field of artificial photosynthesis. LÄS MER

  2. 2. Design and Operation of a 10 kWth Chemical-Looping Combustor for Solid Fuels

    Detta är en avhandling från Stockholm : Department of Organic Chemistry, Stockholm University

    Författare :Nicolas Berguerand; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solid Fuel Conversion; Chemical-Looping Combustion; Oxygen Carrier; Ilmenite; Carbon Dioxide Capture; Oxygen Transfer; Gas Conversion; Oxygen Demand;

    Sammanfattning : Chemical-looping combustion (CLC) is a new fuel conversion technology with inherent CO2 capture. In this process, the fuel and the combustion air are never mixed and the oxygen is transferred to the fuel via an oxygen carrier in the form of a metal oxide circulating between two reactors, e.g. LÄS MER

  3. 3. Proton transfer in nitric oxide reducing heme-copper oxidases

    Detta är en avhandling från Stockholm : Department of Biochemistry and Biophysics, Stockholm University

    Författare :Joachim Reimann; Stockholms universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; heme-copper oxidases; nitric oxide; proton transfer; electron transfer; proton-transfer pathway; biokemi; Biochemistry;

    Sammanfattning : Heme-copper oxidases (HCuOs) are best known as terminal oxidases in the aerobic respiratory chain, in which they catalyze the reduction of oxygen to water. By receiving protons and electrons from opposite sides of the membrane as well as pumping protons, HCuOs contribute to the electrochemical proton gradient over the membrane that can be used for ATP synthesis. LÄS MER

  4. 4. Theoretical and experimental studies of surface and interfacial phenomena involving steel surfaces

    Detta är en avhandling från Stockholm : KTH

    Författare :Weimin Cao; KTH.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sulfur; Oxygen; Adsorption; Iron surface; ab initio calculations; Adsorption energy; Work function; Difference charge density; Magnetic properties; Thermodynamic stability; Average velocity; Monte Carlo simulation; X-ray sessile drop method; Mass transfer; Interfacial velocity; TECHNOLOGY Chemical engineering Metallurgical process and manufacturing engineering Metallurgical process engineering; TEKNIKVETENSKAP Kemiteknik Metallurgisk process- och produktionsteknik Metallurgisk processteknik;

    Sammanfattning : The present work was initiated to investigate the surface- and interfacial phenomena for iron and slag/iron systems. The aim was to understand the mechanism of the effect of surface active elements on surface and interfacial properties. LÄS MER

  5. 5. Simulations of Transport Phenomena and Porous Structures Using Dissipative Particle Dynamics

    Detta är en avhandling från Stockholm : KTH

    Författare :Erik Johansson; Lunds universitet.; Lund University.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Popular Abstract in Swedish Det här arbetet handlar om simuleringar av porösa material och transportfenomen vid en mesoskopisk längdskala, det vill säga en längdskala större än en enskild atom men mindre än att alla atomer beter sig som en kontinuerlig enhet. De porösa material som har studerats är membran som används i bränsleceller. LÄS MER