Sökning: "aluminium silicate"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden aluminium silicate.

  1. 1. Platinum Nanoparticles Prepared in Water-in-Oil Microemulsions -Particle Formation, Support Interaction and Catalytic Activity

    Författare :Hanna Härelind Ingelsten; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; platinum; lean NO reduction; aluminium silicate; catalytic activity; silica; w o microemulsion; hydrocarbons; alumina; nanoparticle formation; catalyst preparation;

    Sammanfattning : .... LÄS MER

  3. 2. Partial Oxidation of Methane over Functionalised Zeolites and Zeotypes

    Författare :Xueting Wang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; FTIR; Heterogeneous catalysis; Copper boron silicate; Zeolite; Natural gas; Biogas; Green methanol; zeotype; Temperature-programmed desorption; Cu-SSZ-13; Cu-ZSM-5; In situ infrared spectroscopy;

    Sammanfattning : Partial oxidation of methane to methanol is an industrially important process that allows natural gas and biogas to be utilised for methanol-based production of chemicals or converted to liquid methanol fuel, which make transportation more facile. In this thesis, the activity for partial oxidation of methane to methanol over copper functionalised zeolites and silica supported copper is investigated using a three-step quasi-catalytic approach including catalyst activation, methane reaction and methanol extraction by water. LÄS MER

  4. 3. Solid state 29Si and 27Al magic angle spinning NMR studies of mechanochemically modified cement

    Författare :Karin Johansson; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi;

    Sammanfattning : Solid state 29Si and 27Al magic angle spinning (MAS) NMR spectroscopy has been used to investigate how mechanochemical modification affects the hydration kinetics, as well as the structural and chemical properties, in cement blends. The modification comprises intensive treatment of rapid hardening Portland cement with condensed silica fume additive in a vibrating grinding mill. LÄS MER

  5. 4. Fine Structure and semi ordered structures : Extended energy loss fine structure investigations of semi ordered materials

    Författare :Riitta Räty; Edward A Stern; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; fysik;

    Sammanfattning : This thesis is based on structure determinations of solid materials with Extended energy loss fine structure (EXELFS) analysis. In this method the ionisation edges of a material recorded in an electron microscope are studied. The focus is on different hard materials. LÄS MER

  7. 5. Human salivary esterases : a biochemical study of carboxylesterase and thio-esterase in human saliva with special reference to their inhibition by dental materials

    Författare :Lennart Lindqvist; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Electrophoretic and gel chromatographic techniques have been developed in order to obtain partially purified esterases from small amounts of human saliva. These techniques permit the characterization of salivary esterase regarding substrate and inhibitor specificities, and lectin binding ability. LÄS MER