Sökning: "alkane"

Visar resultat 21 - 25 av 28 avhandlingar innehållade ordet alkane.

  1. 21. Adsorption of Organic Phosphines and Thiols on Metal Surfaces

    Författare :Hans Kariis; Per Persson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In this thesis investigations of the adsorption of small molecules on metal surfaces are presented. Several surface sensitive analytical methods are used in the studies.Surface modification of gold is a field in which an enormous amount of work has been published in recent years. LÄS MER

  3. 22. Studies of Inorganic Layer and Framework Structures Using Time-, Temperature- and Pressure-Resolved Powder Diffraction Techniques

    Författare :Anne Krogh Andersen; Rolf Norrestam; Kenny Ståhl; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; inorganic structure; framework structure; x-ray diffraction; synchrotron radiation; powder diffraction; Chemistry; Kemi;

    Sammanfattning : This thesis is concerned with in-situ time-, temperature- and pressure-resolved synchrotron X-ray powder diffraction investigations of a variety of inorganic compounds with twodimensional layer structures and three-dimensional framework structures. In particular, phase stability, reaction kinetics, thermal expansion and compressibility at non-ambient conditions has been studied for 1) Phosphates with composition MIV(HPO4)2·nH2O (MIV = Ti, Zr); 2) Pyrophosphates and pyrovanadates with composition MIVX2O7 (MIV = Ti, Zr and X = P, V); 3) Molybdates with composition ZrMo2O8. LÄS MER

  4. 23. Properties of Asphaltenes with emphasis on NMR self-diffusion as the investigating technique

    Författare :Jenny-Ann Östlund; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; amphiphilic; diffusion; oil; mixture analysis; CORE; stability; NMR; pulsed gradient spin echo; light scattering; XPS; asphaltene; chemical interactions;

    Sammanfattning : Asphaltenes are high-molecular weight, highly aromatic molecules that have a strong tendency to aggregate. Asphaltenes are found in oil and may, if they form particles, cause problems during oil production and handling. LÄS MER

  5. 24. Quantum Chemical Modeling of Phosphoesterase Mimics and Chemistry in Confined Spaces

    Författare :Henrik Daver; Fahmi Himo; Gregori Ujaque; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; density functional theory; catalysis; phosphoester hydrolysis; transesterification; supramolecular chemistry; inclusion complex; host-guest chemistry; cycloaddition; organisk kemi; Organic Chemistry;

    Sammanfattning : In this thesis, density functional theory is employed in the study of two kinds of systems that can be considered to be biomimetic in their own ways. First, three binuclear metal complexes, synthesized by the group of Prof. Ebbe Nordlander, have been investigated. LÄS MER

  7. 25. Sampling and analysis of polynuclear aromatic hydrocarbons with special reference to automobile exhausts

    Författare :Ulf Stenberg; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : A literature survey concerning the progress in sampling of polynu clear aromatic hydrocarbons, PAH, from automobile exhausts is pre seated. In this conjunction the included analytical methods are discussed, and some emphasis is put on injection technique and column performance. LÄS MER