Sökning: "H2 CO ratio"

Visar resultat 11 - 15 av 34 avhandlingar innehållade orden H2 CO ratio.

  1. 11. A Study of Catalytic Ignition and Kinetic Phase Transitions

    Författare :Mats Rinnemo; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; catalytic ignition; catalysis; kinetic phase transitions; platinum;

    Sammanfattning : Catalytic ignition and kinetic phase transitions are two critical phenomena which can occur in heterogeneously catalyzed reaction systems. They have in common that the system behavior changes qualitatively when a control parame-ter passes through a critical value. LÄS MER

  3. 12. Microstructural Changes in Deactivated Noble Metal Catalysts

    Författare :Bertil Stenbom; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The structural deactivation of supported noble metal catalysts has been investigated for treatments at different temperatures and in different atmospheres. The sintering rates of Pt/Al2O3, Rh/Al2O3, and Pt-Rh/Al2O3 catalysts were measured using temperature-programmed desorption of CO (CO-TPD) and transmission electron microscopy (TEM). LÄS MER

  4. 13. Studies of Interstellar Molecular Gas in the Magellanic Clouds

    Författare :Arto Heikkilä; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; abundances-Galaxies; evolution; molecules-Galaxies; Magellanic Clouds-Interstellar medium; molecules-Galaxies; interstellar medium-Galaxies;

    Sammanfattning : Results of observational studies of interstellar molecular gas clouds in the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC), two nearby metal-poor and dust-poor dwarf galaxies, are presented. Spectral line radiation emitted by interstellar molecules has been used to probe the physical state and the chemical composition of individual molecular clouds. LÄS MER

  5. 14. Large scale experiments and modeling of black liquor gasification

    Författare :Per Carlsson; Mikko Hupa; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

    Sammanfattning : Biomass gasification could provide a basis for increased electricity and engine fuel production from a renewable source in the pulp and paper industry. This work focuses on the largest byproduct available at the pulp mills, black liquor. LÄS MER

  7. 15. UV-photoelectron spectroscopy of free atoms and molecules at near 1 meV resolution

    Författare :Gunnar Öhrwall; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik; fysik; Physics;

    Sammanfattning : Results of ultraviolet photoelectron spectroscopy experiments on free atoms and moleculesare presented. The energy resolution and signal-to-noise ratio of the photoelectron spec-tra are such that several new observations have been possible. LÄS MER