Search for dissertations about: "noble"

Showing result 16 - 20 of 151 swedish dissertations containing the word noble.

  2. 16. Structural deactivation of supported metal catalysts

    Author : Bertil Stenbom; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; CO-TPD; alumina; ceria; catalyst; TEM; rhodium; sintering; noble metal; platinum; deactivation;

    Abstract : .... READ MORE

  4. 17. Hydroconversion of model Fischer‑Tropsch wax over noble metal/silica-alumina catalysts

    Author : Francesco Regali; Magali Boutonnet; J.W. Niemantsverdriet; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydroconversion; Fischer-Tropsch wax; n-hexadecane; bifunctional hydrocracking; hydrogenolysis; silica-alumina; platinum; palladium;

    Abstract : Synthetic fuels produced using the Fischer-Tropsch technology will play an important role in the future of the transportation sector. The Fischer-Tropsch synthesis (FTS) allows converting synthesis gas (CO + H2) into fuels of outstanding quality. The synthesis gas can be obtained from different carbon sources: natural gas, coal and biomass. READ MORE

  5. 18. Atomic and electronic structures of two-dimensional layers on noble metals

    Author : Jalil Shah; Roger Uhrberg; Hafiz Muhammad Sohail; Patrick Vogt; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Two-dimensional (2D) materials, in the form of a single atomic layer with a crystalline structure, are of interest for electronic applications. Such materials can be formed by a single element, e.g., by group IV or group V elements, or as a 2D surface alloy. READ MORE

  6. 19. First-Principles Modeling of Selected Heterogeneous Reactions Catalyzed by Noble-Metal Nanoparticles

    Author : Xinrui Cao; Yi Luo; Peijun Hu; KTH; []
    Keywords : ;

    Abstract : Heterogeneous catalysis is an important branch in catalysis, in which the catalyst and reactants are in different physical phases. In this thesis, we have carried out extensive first-principles calculations to explore the selected heterogeneous reactions catalyzed by the noble-metal nanoparticles. READ MORE

  7. 20. Preparation and characterisation of perovskite and noble metal promoted oxide based catalysts

    Author : Leif Dahl; Ragnar Larsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; oorganisk kemi; Inorganic Chemistry;

    Abstract : This work concerns efforts to improve or replace noble-metal based catalysts used for car exhaust purification.Various oxide based catalysts have been prepared by impregnating washcoats such as (-Al2O3 and SiO2 with appropriate metal ions, and assemblies calcinated at elevated temperatures have been tested for catalytic activity in the oxidation of CO and C3H6 and reduction of NO. READ MORE