Search for dissertations about: "hydrates"

Showing result 6 - 10 of 28 swedish dissertations containing the word hydrates.

  2. 6. Water in and on ionic materials : Structure, energetics, and vibrations

    Author : Getachew Kebede; Kersti Hermansson; Marie-Pierre Gaigeot; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; DFT; dispersion interactions; OH stretching frequency; electric field; dipole moment; Hydrogen bond; ionic surfaces; ionic hydrates;

    Abstract : Many chemical and physical phenomena in nature, in industrial processes, and in our daily lives take place at water/solid interfaces. The aim of this thesis is to further our knowledge of such processes at a molecular level. READ MORE

  4. 7. Theoretical Studies of Natural Gas Hydrates and H-bonded Clusters and Crystals

    Author : Yuan Liu; Lars Ojamäe; Per-Olov Käll; Ben Slater; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In this thesis H-bonded systems (natural gas hydrates, water clusters, and crystal ice) are studied by density functional theory (DFT) computations.Natural gas hydrates (NGHs) play an important role in energy and environmental fields: NGHs are considered as a promising backup energy resource in the near-future due to their tremendous carbon content; improper exploration of NGHs could induce geological disasters and aggravate the greenhouse effect. READ MORE

  5. 8. Vibrational spectroscopy and normal coordinate analysis of water molecules in crystalline hydrates

    Author : Anders Eriksson; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  6. 9. Structural aspects on some rare earth nitrate hydrates in the solid state

    Author : Birgitta Eriksson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sällsynta jordartsmetaller;

    Abstract : Structural information on different complexes is necessary for the understanding of coordination chemistry. The variety of molecular arrangements will increase with increasing coordination number of the central metal ion. READ MORE

  7. 10. Deep generated methane in the global methane budget

    Author : Elena Mukhina; Vladimir G. Kutcherov; Natalia Dubrovinskaya; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Energy Technology; Energiteknik;

    Abstract : Methane is a significant part of the global carbon cycle. The distribution of methane above and below the Earth’s surface suggests that atmospheric methane might be related to methane originating from the deep mantle. READ MORE