Browsing Kjemisk institutt by Author "Nielsen, Malte"

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  • Collective action of water molecules in zeolite dealumination 
    Nielsen, Malte; Hafreager, Anders; Brogaard, Rasmus Yding; De Wispelaere, Kristof; Falsig, Hanne; Beato, Pablo; Van Speybroeck, Veronique; Svelle, Stian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    When exposed to steam, zeolite catalysts are irreversibly deactivated by loss of acidity and framework degradation caused by dealumination. Steaming typically occurs at elevated temperatures, making it challenging to ...
  • A Straightforward Descriptor for the Deactivation of Zeolite Catalyst H-ZSM-5 
    Rojo-Gama, Daniel; Nielsen, Malte; Wragg, David; Dyballa, Michael Martin; Holzinger, Julian; Falsig, Hanne; Lundegaard, Lars Fahl; Beato, Pablo; Brogaard, Rasmus Yding; Lillerud, Karl Petter; Olsbye, Unni; Svelle, Stian (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    ZSM-5 is a widely used zeolite catalyst and is employed industrially for the methanol to gasoline (MTG) process. Even so, deactivation of ZSM-5 by coke formation constitutes a major technical and also fundamental challenge. ...