Search for dissertations about: "oxide activity"

Showing result 1 - 5 of 290 swedish dissertations containing the words oxide activity.

  1. 1. Thermodynamic Aspects on Inclusion Composition and Oxygen Activity during Ladle Treatment

    University dissertation from Stockholm : KTH

    Author : Johan Björklund; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ladle treatment; thermodynamics; inclusions; steel; slag; equilibrium; ladle treatment; vacuum; oxide activity; oxygen activity.; TECHNOLOGY Chemical engineering Metallurgical process and manufacturing engineering; TEKNIKVETENSKAP Kemiteknik Metallurgisk process- och produktionsteknik;

    Abstract : Two industrial studies and one set of lab scale trials have been done. In addition, a theoretical study has been done. The main focus has been on non metallic inclusion composition during the ladle refining operation in industrial steel production. Sampling has been done together with careful inclusion determination. READ MORE

  2. 2. Investigation of vanadium-containing oxide systems CALPHAD and experiments

    University dissertation from KTH Royal Institute of Technology

    Author : Yang Yang; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Calphad; thermodynamic modelling; compound energy formalism; evaporation kinetics; activation energy; TGA; activity;

    Abstract : Fundamental studies on thermodynamic properties of vanadium-containing oxides systems are essential to understand practical vanadium metallurgical process. The CALPHAD technique is here applied to the thermodynamic modelling of the V-O, Ca-V-O and Ti-V-O systems. The compound energy formalism is used for all the solution phases. READ MORE

  3. 3. 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

  4. 4. Catalytic Incineration of CO and VOC Emissions over Supported Metal Oxide Catalysts

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

    Author : Per-Olof Larsson; Lunds universitet.; Lund University.; [1999]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Titania; Ceria; Manganese oxide; Copper oxide; VOC; CO; Ethanol; Ethyl acetate; Metal oxide catalysts; Catalytic combustion; Catalytic incineration; Alumina.; Chemical technology and engineering; Kemiteknik och kemisk teknologi;

    Abstract : Catalytic incineration is one of the methods to reduce the emissions of CO and VOCs. Low operation temperature and low catalyst cost are essential parameters for catalytic incinerators. Pt/Al2O3 catalysts are frequently used today, but the cheaper metal oxide catalysts can be very competitive if comparable overall activity is obtained. READ MORE

  5. 5. Effect of surface characteristics on cellular adherence and activity

    University dissertation from Faculty of Odontology, Malmö University

    Author : Marjan Dorkhan; Malmö University.; [2014]
    Keywords : ODONTOLOGY; ODONTOLOGI; Sciences; Bacteria; microbial biofilm; dental implant; streptococci; oral bacteria; salivary pellicle; early colonizers; titanium oxide; microbial activity; oral keratinocytes; gingival fibroblasts; cell attachment; surface modification; anodic oxidation; anatase;

    Abstract : After insertion of the dental implant into the jaw, the neck of the implant protruding through the mucosa (implant abutment) will be exposed to the complex environment of the mouth. This results in the formation of a conditioning protein coat (pellicle) derived from saliva and/or gingival crevicular fluid. READ MORE