Sökning: "chemisorption"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet chemisorption.

  1. 1. Stability improvement to a ruthenium catalyst for partial oxidation of methane

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Melker Axelsson; [2023]
    Nyckelord :catalysis; reaction engineering; kinetics; partial oxidation; chemical engineering; Technology and Engineering;

    Sammanfattning : Catalytic partial oxidation of methane (CPOM) is an energy-efficient alternative to steam reforming, the currently prevailing method for energy production from natural gas. Hulteberg Chemistry & Engineering AB has developed a catalyst for the partial oxidation of methane into syngas, for use in solid oxide fuel cells. LÄS MER

  3. 2. Development and understanding of a model V2O5/anatase TiO2(101) SCR catalyst

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Johanna Paulsson; [2023]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : A model V2O5/ anatase TiO2(101) SCR catalyst is studied with the purpose of developing and understanding the reaction mechanism through which this catalyst reduces NOx. Several reaction mechanisms have been proposed for this catalyst in the past, but there is still no agreement on which of these describe the reaction the best, if any. LÄS MER

  4. 3. Effect of Biofuel Impurities on the Diesel Oxidation Catalyst

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Liene Kienkas; [2017]
    Nyckelord :DIESEL OXIDATION CATALYST; POISONING; PHOSPHORUS; SODIUM; CALCIUM; MATERIAL CHARACTERIZATION; ACTIVITY TESTING;

    Sammanfattning : Scania provides sustainable transport systems powered by bioethanol, biogas, biodiesel along with hybrid and conventional solutions. Today Scania offers the largest variety of engines operating on alternative fuels in the market. The number of the alternative fuel operated vehicles sold in 2016 increased by 40 % [1]. LÄS MER

  5. 4. Fastställande av PGM-tillgänglighet för dieseloxidationskatalysator med hjälp av kemisorption

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :KEYVAN EDRISI; [2015]
    Nyckelord :chemisorption; dispersion; bimetallic; PGM; DOC; performance correlation; method development;

    Sammanfattning : The Diesel Oxidation Catalyst (DOC) is subjected to harsh conditions, causing its performance to diminish over time as the result of different aging mechanisms, which either decreases or lowers the accessibility to the catalyst’s active sites. Previous work using chemisorption to quantify aging progression has resulted in a reproducibility of 17%. LÄS MER

  7. 5. Noble metal catalysts for the hydrocracking of FT waxes

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Rodrigo Suárez París; [2012]
    Nyckelord :Hydrocracking; Fischer-Tropsch; Hexadecane; Platinum; Palladium;

    Sammanfattning : Bifunctional catalysts consisting of palladium or platinum and supported on amorphous silica-alumina were prepared and tested in the hydrocracking of n-hexadecane, which is considered to be representative of n-paraffins in hydrocracker feeds. In addition to the evaluation of the  physicochemical properties, a comprehensive study on catalyst activity and selectivity has been conducted, in the full range of conversions. LÄS MER