Browsing Kjemisk institutt by Author "Waller, David"

Now showing items 1-3 of 3

  • Development of custom made bimetallic alloy model systems based on platinum-rhodium for heterogeneous catalysis 
    Kumar, Susmit; Waller, David; Fjellvåg, Helmer; Sjåstad, Anja Olafsen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The current study extends the insight into solid-state diffusion in alloys of the Platinum Group Metals (PGMs). Thereby, we pave the way for tailor making surface compositions of binary platinum (Pt) – rhodium (Rh) model ...
  • Mechanism of grain reconstruction of Pd and Pd/Ni wires during Pt–catchment 
    Fjellvåg, Asbjørn Slagtern; Jørgensen, Peter Stanley; Waller, David; Wragg, David Stephen; Michiel, Marco Di; Sjåstad, Anja Olafsen (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    We have investigated industrial Pd and Pd/Ni (91.3/8.7 at.%) wires and gauzes used for Pt-catchment during the ammonia oxidation process, focusing on the origin of the grain reconstruction phenomena. In situ X-ray absorption ...
  • Pt-Catchment Using Pd/Au Alloys: Effect of Enhanced Diffusion 
    Fjellvåg, Asbjørn Slagtern; Waller, David; By, Thomas; Sjåstad, Anja Olafsen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We have studied a series of Pd/Au alloys as Pt-catchment materials, both in lab-scale experiments and in an industrial ammonia oxidation plant. Our focus has been on how bulk Pt diffusion affects grain reconstruction in ...