Browsing Det matematisk-naturvitenskapelige fakultet by Title

Now showing items 832-838 of 838

  • Zeolite surface methoxy groups as key intermediates in the stepwise conversion of methane to methanol 
    Dyballa, Michael Martin; Thorshaug, Knut; Pappas, Dimitrios; Borfecchia, Elisa; Kvande, Karoline; Bordiga, Silvia; Berlier, Gloria; Lazzarini, Andrea; Olsbye, Unni; Beato, Pablo; Svelle, Stian; Arstad, Bjørnar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    This contribution clarifies the overoxidation-preventing key step in the methane-to-methanol (MTM) conversion over copper mordenite zeolites. We followed the methane-to-methanol conversion over copper mordenite zeolites ...
  • Zinc vacancy and oxygen interstitial in ZnO revealed by sequential annealing and electron irradiation 
    Knutsen, Knut Erik; Galeckas, Augustinas; Zubiaga, Asier; Tuomisto, Filip; Farlow, Gary C.; Svensson, Bengt Gunnar; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    By combining results from positron annihilation and photoluminescence spectroscopy with data from Hall effect measurements, the characteristic deep level emission centered at ∼1.75 eV and exhibiting an activation energy ...
  • Zinc-Vacancy–Donor Complex: A Crucial Compensating Acceptor in ZnO 
    Stehr, J. E.; Johansen, Klaus Magnus H; Bjørheim, Tor Svendsen; Vines, Lasse; Svensson, Bengt Gunnar; Chen, W. M.; Buyanova, I. A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    The aluminum–zinc-vacancy (AlZn−VZn) complex is identified as one of the dominant defects in Al-containing n-type ZnO after electron irradiation at room temperature with energies above 0.8 MeV. The complex is energetically ...
  • Zircon and quartz inclusions in garnet used for complementary Raman thermobarometry: application to the Holsnøy eclogite, Bergen Arcs, Western Norway 
    Zhong, Xin; Andersen, Niels Højmark; Dabrowski, Marcin; Jamtveit, Bjørn (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Mineral inclusions are common and have been widely used to investigate complex geological history. When a rock undergoes cooling and decompression after the entrapment of an inclusion into a host mineral, residual pressure ...
  • Zn Redistribution and Volatility in ZnZrOx Catalysts for CO2 Hydrogenation 
    Redekop, Evgeniy; Cordero-Lanzac, Tomás; Salusso, Davide; Pokle, Anuj; Øien-Ødegaard, Sigurd; Sunding, Martin Fleissner; Diplas, Spyridon; Negri, Chiara; Borfecchia, Elisa; Bordiga, Silvia; Olsbye, Unni (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    ZnO–ZrO2 mixed oxide (ZnZrOx) catalysts are widely studied as selective catalysts for CO2 hydrogenation into methanol at high-temperature conditions (300–350 °C) that are preferred for the subsequent in situ zeolite-catalyzed ...
  • Zoobooth: A portable, open-source and affordable approach for repeated size measurements of live individual zooplankton 
    Broch, Catharina; Heuschele, Jan David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Repeated size measurements of individual animals are valuable data for many research questions, but it is often hard to obtain without causing stress or damage to the animal. We developed a video-based approach called ...
  • σ-Cyclopropyl to π-Allyl Rearrangement at AuIII 
    Holmsen, Marte Sofie Martinsen; Vesseur, David; García-Rodeja, Yago; Miqueu, Karinne; Bourissou, Didier (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract The possibility for Au III σ‐cyclopropyl complexes to undergo ring‐opening and give π‐allyl complexes was interrogated. The transformation was first evidenced within (P,C)‐cyclometalated complexes, it occurs within ...