Search for dissertations about: "Propene"

Showing result 6 - 10 of 32 swedish dissertations containing the word Propene.

  2. 6. Hydrothermally induced changes of lean NOx reduction over Cu-ZSM-5 and stability improvements by synthesis modification

    Author : Malin Berggrund; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; hydrothermal stability; Cu-ZSM-5; propene; lean NOx reduction; HC-SCR; in-situ DRIFT;

    Abstract : The growing concern about the global warming coupled with the increasing emissions of the greenhouse gas carbon dioxide, combined with the climbing oil price, drives the interest to more fuel efficient lean combustion engines for automotive applications. Such engines require new technical solutions for reduction of NOx in the oxygen rich exhaust gases, where a conventional three-way catalyst cannot be used. READ MORE

  4. 7. Low temperature CO oxidation on supported platinum and cobalt oxide catalysts

    Author : Peter Thormählen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon monoxide; platinum; cobalt oxide; NOx; CO; ceria; palladium; pre-treatment; CO light-off; TPO; CO-TPD; CO2; propene; C3H6; H2; low temperature activity; cold start emissions; catalytic oxidation; TPReaction; A12O3; SO2;

    Abstract : .... READ MORE

  5. 8. Studies of vinyl chloride, urethane, 1,2-dichloroethane and propene with respect to metabolism, covalent binding to macromolecule and genotoxic risk

    Author : Kettil Svensson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  6. 9. Ionization Influence on the Dynamics of Simple Organic Molecules

    Author : Tomoko Akiyama; Carl Caleman; Oscar Grånäs; Olle Björneholm; Maria Hahlin; Uppsala universitet; []
    Keywords : Small organic molecule; Density functional theory; bond integrity; Symmetric structure;

    Abstract : This licentiate thesis is devoted to the investigation of how bonding in simple organic molecules are affected by X-ray beam irradiation. The investigation targets molecules with three carbons as their main-chain structure. The stability of the bonds under ionization are simulated using the SIESTA package. READ MORE

  7. 10. Transient Phenomena in CO and Hydrocarbon Oxidation over Supported Platinum Catalysts

    Author : Per-Anders Carlsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; mean-field kinetics simulations; ignition; environmental heterogeneous catalysis; flow-reactor studies; periodic operation; extinction; low-temperature activity; transient methods; in situ spectroscopy;

    Abstract : The aim with this thesis work was to better understand transient phenomena involved in the low-temperature oxidation of CO and hydrocarbons by oxygen over typical oxidation catalysts. Supported platinum catalysts were prepared and carefully studied under transient conditions by means of flow-reactor experiments, different in situ spectroscopic (FTIR and XANES) methods in combination with mass spectrometry and mean-field kinetics simulations. READ MORE