Sökning: "carburization"

Visar resultat 11 - 15 av 16 avhandlingar innehållade ordet carburization.

  1. 11. CO, CO2 and N2 hydrogenation reactions probed by operando x-ray photoelectron spectroscopy

    Författare :David Degerman; Anders Nilsson; Miquel Salmeron; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Operando Catalysis; Hydrogenation reactions; High-Pressure X-Ray Photoelectron Spectroscopy; Syngas; kemisk fysik; Chemical Physics;

    Sammanfattning : Catalytic reactions are essential for generating the chemical products required by the modern society. In particular, reactions related to clean energy storage and generation as well as fertilizer production are facilitated by catalysts. However, the processes are often insufficiently understood at a mechanistic level. LÄS MER

  3. 12. Tungsten-Based Nanocomposites by Chemical Methods

    Författare :Sverker Wahlberg; Muhammet S. Toprak; Håkan Engqvist; FNM Funktionella material KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Tungsten based-materials find use in many different fields of engineering, particularly in applications where good temperature and/or erosion resistance is important. Nanostructuring of tungsten composites is expected to dramatically improve the materials’ properties and enhancing the performance in present applications but also enabling totally new possibilities. LÄS MER

  4. 13. Pellet reduction properties under different blast furnace operating conditions

    Författare :Ulrika Leimalm; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Sammanfattning : One of the aims of modern blast furnace (BF) ironmaking is to reduce coke consumption. One way is to increase the injection of reduction agents, such as pulverized coal. An increase in pulverized coal injection rate (PCR) will affect the blast furnace process and the conditions for iron oxide reduction. LÄS MER

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

    Författare :Tarja Turkki; KTH; []
    Nyckelord :;

    Sammanfattning : 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. LÄS MER

  7. 15. Nanostructured Tungsten Materials by Chemical Methods

    Författare :Sverker Wahlberg; Mamoun Muhammed; Håkan Engqvist; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Tungsten based-materials are used in many different technical fields, particularly in applications requiring good temperature and/or erosion resistance. Nanostructuring of tungsten alloys and composites has the potential to dramatically improve the materials’ properties, enhancing the performance in present applications or enabling totally new possibilities. LÄS MER