Blar i USN Open Archive på forfatter "Arstad, Bjørnar"

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    • 13C and 15N NMR characterization of amine reactivity and solvent effects in CO2 capture 

      Perinu, Cristina; Arstad, Bjørnar; Bouzga, Aud Mjærum; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2014)
      Factors influencing the reactivity of selected amine absorbents for carbon dioxide (CO2) capture, in terms of the tendency to form amine carbamate, have been studied. Four linear primary alkanolamines at varying chain ...

    • Application of 15N-NMR spectroscopy to analysis of amine based CO2 capture solvents 

      Perinu, Cristina; Arachchige, Gumunu L. Samarakoon; Arstad, Bjørnar; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2014)
      15N NMR spectroscopy is a useful tool for amine reactivity characterization since it can provide information about the availability of the lone pair of electrons on nitrogen through the measured chemical shift values, which ...

    • Low-Viscosity Nonaqueous Sulfolane-Amine-Methanol Solvent Blend for Reversible CO2 Capture 

      Wagaarachchige, Jayangi Dinesha; Idris, Zulkifli; Arstad, Bjørnar; Kummamuru, Nithin Bharadwaj; Sætre, Kai Arne; Halstensen, Maths; Jens, Klaus-Joachim (Peer reviewed; Journal article, 2022)
      In this work, the absorption–desorption performance of CO2 in six new solvent blends of amine (diisopropylamine (DPA), 2-amino-2-methyl-1-propanol (AMP), methyldiethanolamine (MDEA), diethanolamine (DEA), diisopropanolamine ...

    • NMR spectroscopy applied to amine–CO2–H2O systems relevant for post-combustion CO2 capture: A review 

      Perinu, Cristina; Arstad, Bjørnar; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2014)
      Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful non-invasive analytical technique for chemical analyses since direct measurements at a molecular level can be performed. In this work, a survey of NMR spectroscopy ...

    • NMR-based carbamate decomposition constants of linear primary alkanolamines for CO2 capture 

      Perinu, Cristina; Arstad, Bjørnar; Bouzga, Aud Mjærum; Svendsen, John Arild; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2014)
      The amine carbamate related equilibrium (RNHCOO– + H2O ⇆ RNH2 + HCO3–) has been investigated with 13C NMR (Nuclear Magnetic Resonance) spectroscopy for a series of linear primary alkanolamines, and the apparent carbamate ...