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Rune Bredesen

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Rune Bredesen

Forskningssjef

Rune Bredesen
Telefon: 938 11 279
Mobil: 938 11 279
Avdeling: Bærekraftig energiteknologi
Kontorsted: Oslo

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

Chemical stability and H2 flux degradation of cercer membranes based on lanthanum tungstate and lanthanum chromite

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1335503

Ceramic–ceramic composite (cercer) membranes of (Mo-doped) lanthanum tungstate, La27(W,Mo)5O55.5−δ, and lanthanum chromite, La0.87Sr0.13CrO3−δ, have recently been shown to exhibit H2 permeabilities among state-of-the-art. The present work deals with the long-term stability of these cercer membranes ...

Forfattere Polfus Jonathan M. Li Zuoan Xing Wen Sunding Martin Fleissner Walmsley John Charles Fontaine Marie-Laure Henriksen Partow Pakdel Bredesen Rune
År 2016
Type Tidsskriftsartikkel
Publikasjon

Solubility of transition metal interstitials in proton conducting BaZrO3 and similar perovskite oxides

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1356180

The defect chemistry of foreign transition metals in perovskite oxides was investigated by first-principles calculations with focus on Ni and Zn in Y-doped BaZrO3. Additional transition metals (Cu, Fe, Pd, Pt, and Ag) and perovskites (SrZrO3 and SrTiO3) were considered for comparison. The octahedral...

Forfattere Polfus Jonathan M. Fontaine Marie-Laure Thøgersen Annett Riktor Marit Dalseth Norby Truls Bredesen Rune
År 2016
Type Tidsskriftsartikkel
Publikasjon

Dual phase high-temperature membranes for CO2 separation – performance assessment in post- and pre-combustion processes

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1369980

Dual phase membranes are highly CO2-selective membranes with an operating temperature above 400 °C. The focus of this work is to quantify the potential of dual phase membranes in pre- and post-combustion CO2 capture processes. The process evaluations show that the dual phase membranes integrated wit...

År 2016
Type Tidsskriftsartikkel
Publikasjon

Surface defect chemistry of Y-substituted and hydrated BaZrO3 with subsurface space-charge regions

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1356179

First-principles calculations were utilized to elucidate the complete defect equilibria of surfaces of proton conducting BaZrO3, encompassing charged species adsorbed to the surface, defects in the surface layer as well as in the subsurface space-charge region and bulk. Defect calculations were perf...

Forfattere Polfus Jonathan M. Bjørheim Tor Svendsen Norby Truls Bredesen Rune
År 2016
Type Tidsskriftsartikkel
Publikasjon

Proton segregation and space-charge at the BaZrO3 (0 0 1)/MgO (0 0 1) heterointerface

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1414887

Y-doped BaZrO3 (BZY) can be deposited epitaxially on MgO (0 0 1) and the considered interface serves as a model system for studying heterointerface properties of protonic conductors. In this study, the defect chemistry of the interface between ZrO2-terminated BaZrO3 (0 0 1) and MgO (0 0 1) was inves...

Forfattere Polfus Jonathan M. Norby Truls Eivind Bredesen Rune
År 2016
Type Tidsskriftsartikkel
Publikasjon

Oxygen permeation and creep behavior of Ca1-xSrxTi0.6Fe0.15Mn0.25O3-δ (x=0, 0.5) membrane materials

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1335500

Oxygen permeation measurements were performed on dense symmetric samples of Ca0.5Sr0.5Ti0.6Fe0.15Mn0.25O3−δ and compared to CaTi0.6Fe0.15Mn0.25O3−δ in order to assess the influence of the perovskite lattice volume on oxygen permeation. Oxygen flux measurements were performed in the temperature range...

Forfattere Polfus Jonathan M. Xing Wen Pecanac Goran Fossdal Anita Hanetho Sidsel Meli Larring Yngve Malzbender Jürgen Fontaine Marie-Laure Bredesen Rune
År 2016
Type Tidsskriftsartikkel
Publikasjon

Investigation of Pd-based membranes in propane dehydrogenation (PDH) processes

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1392662

Pd-based membranes have potential applicability in the PDH process to selectively remove hydrogen. In the current work, H2 flux values and coke formation kinetics applying representative gaseous feed mixtures under varying operating conditions are evaluated and modelled. From these experiments, it i...

Forfattere Peters Thijs Liron Ofir Tschentscher Roman Sheintuch Moshe Bredesen Rune
År 2016
Type Tidsskriftsartikkel
Publikasjon

Interplay between propylene and H2S co-adsorption on the H2 flux characteristics of Pd-alloy membranes employed in propane dehydrogenation (PDH) processes

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1392664

The role of propylene and H2S exposure on Pd-Ag membranes was investigated by hydrogen flux measurements of a magnetron sputtered Pd77Ag23 film and first-principles calculations of hydrogen, sulfur and propylene adsorption on the membrane surface. Upon exposure to 10% propylene, the H2 flux was lowe...

Forfattere Peters Thijs Polfus Jonathan M. van Berkel Frans Bredesen Rune
År 2016
Type Tidsskriftsartikkel
Publikasjon

The performance of Pd-Ag alloy membrane films under exposure to trace amounts of H2S

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1392657

In the current article we present the long-term performance of 10 μm-thick Pd77Ag23 membranes under the exposure to varying concentrations of H2S ranging from 5 ppb to 20 ppm at temperatures of 350 and 450 °C. Membranes are exposed to H2S during 265 hours followed by either a H2 flux recovery study,...

Forfattere Peters Thijs Stange Marit Synnøve Sæverud Veenstra Peter Nijmeijer Arian Bredesen Rune
År 2016
Type Tidsskriftsartikkel
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