Sökning: "PdO"

Visar resultat 1 - 5 av 21 avhandlingar innehållade ordet PdO.

  1. 1. Present and future precipitation variations in the source region of the Yangtze River, China

    Författare :Yiheng Du; Avdelningen för Teknisk vattenresurslära; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Precipitation; water balance; ENSO; PDO; Yangtze River; Tibet Plateau; future projections;

    Sammanfattning : The source region of the Yangtze River (SRYR), the origin of the longest river in China, is an area with high-mountains and river ecotones that face considerable challenges under climate change. Precipitation is fundamental for sustainable ecosystems in this area and for the downstream water supplies. LÄS MER

  3. 2. Model catalysts studied by x-rays, visible and infrared light

    Författare :Stefano Albertin; Synkrotronljusfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; High Energy Surface X-ray Diffraction; X-ray Photoelectron Spectroscopy; oxidation; Pd 100 ; PdO; Ir 100 ; IrO2; in-situ; operando; Surface Optical Reflectance;

    Sammanfattning : This work is focused on the study of transition metal model catalysts for gas-phase heterogeneous catalysis, studied with light-based in-situ and operando techniques.Metallic model catalysts, such as Palladium (Pd) and Iridium (Ir) single crystals and in minor part deposited Rhodium (Rh), were studied using a combination of x-ray and non x-ray techniques. LÄS MER

  4. 3. Model studies with nanofabricated and traditional supported catalysts

    Författare :Stefan Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; model catalyst; catalysis; electron-beam litography; micro-reactor; PdO; nanofabrication; hysteresis;

    Sammanfattning : .... LÄS MER

  5. 4. Surface structure and catalytic activity of Pd and Fe oxide surfaces and thin films

    Författare :Mikhail Shipilin; Synkrotronljusfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Surface X-ray diffraction SXRD ; Heterogeneous catalysis; Pd; PdO; Fe; FeO; Thin films; Fysicumarkivet A:2016:Shipilin;

    Sammanfattning : The present work is devoted to atomic scale structural studies of the surfaces of model heterogeneous catalysts relevant to oxidation reactions. A novel approach using high-energy surface X-ray diffraction combined with mass-spectrometry measurements is employed to perform in situ structural characterization of Pd(100) and Pd(553) single crystal surfaces acting as catalysts in the process of CO oxidation under semirealistic conditions. LÄS MER

  7. 5. Methane oxidation over palladium oxide. From electronic structure to catalytic conversion

    Författare :Maxime van den Bossche; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; core-level spectroscopy; heterogeneous catalysis; PdO 101 ; palladium oxide; methane oxidation; microkinetic modelling; density functional theory;

    Sammanfattning : Understanding how catalysts work down to the atomic level can provide ways to improve chemical processes on which our contemporary economy is heavily reliant. The oxidation of methane is one such example, which is important from an environmental point of view. LÄS MER