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Visar resultat 16 - 20 av 295 avhandlingar som matchar ovanstående sökkriterier.

  1. 16. Chemistry and Physics of Cu and H2O on ZnO Surfaces : Electron Transfer, Surface Triangles, and Theory

    Författare :Matti Hellström; Kersti Hermansson; Peter Broqvist; Daniel Spångbeg; Jörg Behler; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; catalysis; density functional theory; SCC-DFTB; band-filling correction;

    Sammanfattning : This thesis discusses the chemistry and physics of Cu and H2O on ZnO surfaces, based primarily on results from quantum chemical calculations. The underlying context is heterogeneous catalysis, where Cu/ZnO-mixtures are used in the industrial synthesis of methanol and in the water gas shift reaction. LÄS MER

  3. 17. Oxidation of CO on platinum surfaces stimulated by photons and H2O

    Författare :Johan Bergeld; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  4. 18. The Photochromic Properties of the Heterogeneous System CuCl(s)-H2O(l)

    Författare :Bo Carlsson; Royal Institute of Technology Thesis Department of Physical Chemistry; []
    Nyckelord :Environmental technology; Miljöteknik;

    Sammanfattning : .... LÄS MER

  5. 19. Thermal and Photon Driven Reactions of NO and H2O Adsorbed on Graphite

    Författare :Kristina Wettergren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Water; Graphite; Silver Clusters; Sodium; Photodesorption; Nitric Oxide; Particle Plasmons;

    Sammanfattning : The topic of this thesis is the interaction of water (H2O) and nitric oxide (NO) with the graphite (C(0001)) surface. Specifically the effects of coadsorbing metals (Na, Ag) and subjecting the adsorption systems to thermal and photon activation were studied. LÄS MER

  7. 20. Ground based measurements of upper atmospheric CO and H2O using microwave radiometry

    Författare :Peter Forkman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mesosphere; carbon monoxide; microwaves; radiometry; remote sensing; water vapour;

    Sammanfattning : Long series of continuous measurements of middle and upper atmospheric constituents are needed to be able to understand the anthropogenic influence on the atmosphere. Phenomena like ozone depletion and the enhanced greenhouse effect are examples where the role of human activities has to be well investigated in order to make the right decisions of necessary changes in our way of life. LÄS MER