Search for dissertations about: "stepped surface"

Showing result 1 - 5 of 10 swedish dissertations containing the words stepped surface.

  1. 1. The effect of surface steps and oxides on the catalytic activity on model Pd and Rh catalysts

    University dissertation from Lund University, Faculty of Science, Department of Physics, Division of Synchrotron Radiation Research

    Author : Chu Zhang; Lunds universitet.; Lund University.; [2018-09]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Surface X-ray diffraction SXRD ; X-ray photonelectron spectroscopy; Catalytic activity; Oxide; Single Crystal surface; surface structure; vicinal surface; CO oxidation; stepped surface; Fysicumarkivet A:2018:Zhang;

    Abstract : En katalysator är en substans som kan snabba på en kemisk reaktion utan attsjälv förbrukas. Katalysatorer används vanligen i kemisk produktion och i bilarsförbränningsmotorer (för att ta bort tex CO och NO). READ MORE

  2. 2. Interaction of some molecules with complex surfaces

    University dissertation from Science

    Author : Andrea Resta; Lunds universitet.; Lund University.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Catalysis; Ethylene; CO.; Surface Science; Vicinal surface; Ethanol; Rh;

    Abstract : This thesis investigates the adsorption, decomposition and reactions of small molecules on flat, oxidised and vicinal surfaces of late transition metals. The main technique for these studies is high resolution core level spectroscopy (HRCLS). All the studies presented in the thesis are performed in Ultra High Vacuum (UHV). READ MORE

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

    University dissertation from Lund University, Faculty of Science, Department of Physics, Division of Synchrotron Radiation Research

    Author : Mikhail Shipilin; Lunds universitet.; Lund University.; [2016-10]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Surface X-ray diffraction SXRD ; Heterogeneous catalysis; Pd; PdO; Fe; FeO; Thin films; Fysicumarkivet A:2016:Shipilin;

    Abstract : Catalytic processes have tremendous importance in our everyday life. Most chemicals, pharmaceuticals, plastics etc. are, in fact, produced with the help of catalysts. READ MORE

  4. 4. ORMOCER Materials Characterization, LAP- & Micro-Processing Applied to Optical Interconnects and High-Frequency Packaging

    University dissertation from Institutionen för teknik och naturvetenskap

    Author : Steffen Uhlig; Linköpings universitet.; Linköpings universitet.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optical interconnects; Optical Backplanes; ORMOCER; SBU-technology; high-frequency packaging; surface characterization; TECHNOLOGY Electrical engineering; electronics and photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik;

    Abstract : ORMOCERR®s are organic-inorganic hybrid polymers. Since their material properties can be tailored precisely during synthesis, they are suitable for a wide range of applications in dielectric and optical microelectronics. READ MORE

  5. 5. Compound Formation in Model Catalysts

    University dissertation from Institutionen för teknik och naturvetenskap

    Author : Rasmus Westerström; Lunds universitet.; Lund University.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2010:Westerström;

    Abstract : In this thesis we have performed a systematic atomic scale characterization of model catalysts under pressures ranging from UHV to atmospheric ambient. By using a unique approach, linking UHV and high pressures studies by combining traditional electron based techniques with novel high pressure in situ probes and ab initio calculations, the surface structure of the different model catalysts could be determined under a wide range of conditions, spanning more than ten orders of magnitude in pressure. READ MORE