Sökning: "supported catalysts"

Visar resultat 1 - 5 av 108 avhandlingar innehållade orden supported catalysts.

  1. 1. Structural deactivation of supported metal catalysts

    Författare :Bertil Stenbom; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; CO-TPD; alumina; ceria; catalyst; TEM; rhodium; sintering; noble metal; platinum; deactivation;

    Sammanfattning : .... LÄS MER

  3. 2. Synthesis of tailored nanoparticles for supported oxidation catalysts

    Författare :Yanyue Feng; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Supported core@shell nanoparticles; Structural stability; CO oxidation;

    Sammanfattning : The transition from microscale to nanoscale materials design leads to immense changes of physical and chemical properties of the materials. For decades, the design and making of functional nanomaterials have been at the frontier of what can be achieved, even with the more sophisticated synthesis methods. LÄS MER

  4. 3. Synthesis of tailored nanoparticles for palladium-based oxidation catalysts

    Författare :Yanyue Feng; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; supported catalysts; CO oxidation; morphology and surface properties; in situ spectroscopy; Pd and Au@Pd nanoparticles;

    Sammanfattning : The immense changes of physical and chemical properties of materials caused by the transition from microscale to nanoscale have been attracting scientific attention for decades. Rapid development of modern techniques triggers the attention on the multicomponent nanoparticle catalysts with enhanced catalytic activities. LÄS MER

  5. 4. Coke on Supported Palladium and Platinum Catalysts

    Författare :Mikael Larsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TPO; palladium; deactivation; coke; propane dehydrogenation; microbalance; vegetable oil hydrogenation; acetylene hydrogenation; catalysis; platinum;

    Sammanfattning : Catalyst deactivation by coke formation has been investigated in three heterogeneous catalytic processes, propane dehydrogenation, acetylene hydrogenation and hydrogenation of vegetable oil. Palladium and/or platinum supported on alumina were used as catalysts in all reactions. LÄS MER

  7. 5. CO Oxidation over Oxide Supported Platinum Catalysts

    Författare :Mengqiao Di; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-temperature activity; CO oxidation; operando spectroscopy; water promotion; active catalyst support; nitrogen oxide inhibition;

    Sammanfattning : Catalytic oxidation of carbon monoxide (CO) is one of the most studied reactions that still needs to be improved because of its practical use in the chemical industry including feedstock purification and applications such as emission control, in-door air cleaning, improvement of fuel cell efficiency, etc. Concerning CO emissions, the transportation sector is a large contributor. LÄS MER