Search for dissertations about: "CERIUM METAL"

Showing result 1 - 5 of 20 swedish dissertations containing the words CERIUM METAL.

  2. 1. Mixed metal oxide - noble metal catalysts for total oxidation of volatile organic compounds and carbon monoxide

    Author : Magali Ferrandon; KTH; []
    Keywords : wood combustion; catalysts; total oxidation; manganese; copper; platinum; palladium; lanthanum; cerium; CO; VOC; methane; deactivation; thermal stability; sulphur dioxide;

    Abstract : CO, volatile organic compounds, and polyaromatics areubiquitous air pollutants that give rise to deleterious healthand environmental effects. Such compounds are emitted, forinstance, by the combustion of wood, particularly fromsmall-scale heating appliances. READ MORE

  4. 2. Artificial Photosynthesis: Molecular Catalysts for Water Oxidation

    Author : Lei Wang; Licheng Sun; Hiroshi Imahori; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; artificial photosynthesis; water oxidation; ruthenium complexes; nickel complexes; cerium; photo-catalysts; photosensitizer; electrochemistry; immobilization.; Kemi; Chemistry; Energiteknik; Energy Technology;

    Abstract : Artificial photosynthesis provides a promising solution to the future sustainable energy system. Water is the only suitably sufficient protons and electrons supplier by the reaction of water oxidation. However, this reaction is both kinetically and thermodynamically demanding, leading to a sluggish kinetics unless the introduction of a catalyst. READ MORE

  5. 3. Nanotoxicology on the right track : focus on metal and metal oxide nanoparticles

    Author : Anda R Gliga; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The last decade has seen a rapid increase in the manufacture and use of nanomaterials, a development which should be met with appropriate safety assessment strategies in order to ensure the sustainable development of nanotechnology. With decreasing size, the percentage of atoms found at the surface of a given material increases substantially, leading to an increase in surface phenomena and acquisition of novel properties. READ MORE

  6. 4. Microstructural Changes in Deactivated Noble Metal Catalysts

    Author : Bertil Stenbom; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The structural deactivation of supported noble metal catalysts has been investigated for treatments at different temperatures and in different atmospheres. The sintering rates of Pt/Al2O3, Rh/Al2O3, and Pt-Rh/Al2O3 catalysts were measured using temperature-programmed desorption of CO (CO-TPD) and transmission electron microscopy (TEM). READ MORE

  7. 5. Studies on preparation and properties of nanophase metal oxides

    Author : Tarja Turkki; KTH; []
    Keywords : ;

    Abstract : This thesis is about science on an atomic scale - aninterdisciplinary approach to nanoparticles. Studies of thepreparation of nanoparticles using both physical and chemicalmethods are presented. Understanding and controlling factorsfor particle growth during synthesis are the keys to successfulfabrication of materials with tailored properties. READ MORE