Search for dissertations about: "methane oxidation"

Showing result 1 - 5 of 57 swedish dissertations containing the words methane oxidation.

  1. 1. Catalytic combustion of methane

    University dissertation from Stockholm : Kemiteknik

    Author : Philippe Thevenin; KTH.; [2002]
    Keywords : catalytic combustion; gas turbine; methane; palladium; alumina; barium; lanthanum; oxidation; preparation; temperature-programmed oxidation TPO ; decomposition; reoxidation; X-ray photoelectron spectroscopy XPS ; metal-support interaction; deactiva;

    Abstract : Catalytic combustion is an environmentally benign technologywhich has recently reached the stage of commercialization.Palladium is the catalyst of choice when considering gasturbines fuelled with natural gas because of its superioractivity for methane oxidation. READ MORE

  2. 2. Abiotic and biotic methane dynamics in relation to the origin of life

    University dissertation from Stockholm : Department of Geological Sciences, Stockholm University

    Author : Nguyen Thanh Duc; Stockholms universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; methane; methanogens; methane formation; methane oxidation; lake sediment; olivine; origin of life; Geochemistry; geokemi;

    Abstract : Methane (CH4) plays an important role in regulating Earth’s climate. Its atmospheric concentrations are related to both biotic and abiotic processes. The biotic one can be formed either by chemoautotrophic or heterotrophic pathways by methanogens. READ MORE

  3. 3. Methane and carbon monoxide oxidation over Pd and Pt -A density functional theory and microkinetic study

    University dissertation from Stockholm : Department of Geological Sciences, Stockholm University

    Author : Adriana Trinchero; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Methane; microkinetic modeling; heterogenous catalysis; Pd; oxidation; DFT; Pt; carbon monoxide;

    Abstract : .... READ MORE

  4. 4. Palladium Catalyzed Methane Oxidation for Emission Control

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Ida Friberg; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; regeneration; sulfur poisoning; Ba; Pd beta; methane oxidation; water deactivation; Si Al ratio; Pd SSZ-13; Pd Al2O3;

    Abstract : The use of methane based fuels, such as natural gas and biogas, benefits from lower emissions of CO2, CO, NOx, non-methane HC, SOx and particulate matters compared to traditionally used liquid fossil fuels. However, the exhaust gases contain significant levels of unburnt CH4 residuals, which are desirable to minimize since CH4 is a strong greenhouse gas with high global warming potential. READ MORE

  5. 5. Spectroscopic characterisation of surface hydroxyls during catalytic methane oxidation

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Peter Velin; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; XAS; Water inhibition; Supported palladium; Sustainable transports; Methane oxidation; Operando spectroscopy; DRIFTS; Environmental catalysis;

    Abstract : Implementation of methane rich fuels as to develop sustainable vehicle transports requires improved catalytic exhaust aftertreatment technologies to convert engine-out methane emissions to carbon dioxide and water by total oxidation. A main challenge is that water formed during combustion inhibits the methane oxidation reaction even over the most active palladium-based catalysts presently known. READ MORE