16. Rh promoted La0.75Sr0.25(Fe0.8Co0.2)1-xGaxO3- perovskite catalysts: Characterization and catalytic performance for methane partial oxidation to synthesis gas. Palcheva, Radostina Dimitrova; Olsbye, Unni; Palcut, Marian; Rauwel, Protima; Tyuliev, Georgi T.; Velinov, Nikolay I.; Fjellvåg, Helmer. Applied Surface Science 2015 ;Volum 357. s.45-54.
15. The fast Z-scan method for studying working catalytic reactors with high energy X-ray diffraction: ZSM-5 in the methanol to gasoline process. Wragg, David; Bleken, Francesca Lønstad; O'Brien, Matthew G.; Di Michiel, Marco; Fjellvåg, Helmer; Olsbye, Unni. Physical Chemistry, Chemical Physics - PCCP 2013 ;Volum 15.(22) s. 8662-8671.
14. Watching the Methanol-to-Olefin Process with Time- and Space-Resolved High-Energy Operando X-ray Diffraction. Wragg, David; O'Brien, Matthew G.; Bleken, Francesca Lønstad; Di Michiel, Marco; Olsbye, Unni; Fjellvåg, Helmer. Angewandte Chemie International Edition 2012;Volum 51.(32) s. 7956-7959.
13. Direct observation of catalyst behaviour under real working conditions with X-ray diffraction: Comparing SAPO-18 and SAPO-34 methanol to olefin catalysts. Wragg, David; Akporiaye, Duncan; Fjellvåg, Helmer. Journal of Catalysis 2011 ;Volum 279.(2) s.397-402.
12. Thermodynamic Control of Product Formation During the Reaction Between CH4 and Pt Promoted Ceria-zirconia Solid Solutions. Mudu, Federica; Arstad, Bjørnar; Fjellvåg, Helmer; Olsbye, Unni. Catalysis Letters 2011 ;Volum 141.(1) s.8-14.
11. Perovskite-type oxide catalysts for low temperature, anaerobic catalytic partial oxidation of methane to syngas. Mudu, Federica; Arstad, Bjørnar; Bakken, Egil; Fjellvåg, Helmer; Olsbye, Unni. Journal of Catalysis 2010 ;Volum 275.(1) s. 25-33.
10. SAPO-34 Methanol-to-Olefin Catalysts Under Working Conditions: A Combined In Situ Powder X-Ray Diffraction, Mass Spectrometry and Raman Study. Wragg, David; Johnsen, Rune Esben; Balasundaram, Murugan; Norby, Poul; Fjellvåg, Helmer; Grønvold, Arne; Fuglerud, Terje; Hafizovic, Jasmina; Vistad, Ørnulv Bjørnsson; Akporiaye, Duncan. Journal of Catalysis (2009); 268(2),290-296.
9. Surface reconstruction on noble-metal catalysts during oxidation of ammonia. Hannevold, Lenka; Nilsen, Ola; Kjekshus, Arne; Fjellvåg, Helmer. Applied Catalysis A: General 2005;284.
8. Reconstruction of platinum-rhodium catalysts during oxidation of ammonia. Hannevold, Lenka; Nilsen, Ola; Kjekshus, Arne; Fjellvåg, Helmer. Applied Catalysis A: General 2005;284.
7. Effect of alpha-Fe2O3 surface coating on reconstruction of platinum-rhodium catalysts during oxidation of ammonia. Hannevold, Lenka; Nilsen, Ola; Kjekshus, Arne; Fjellvåg, Helmer. Applied Catalysis A: General 2005;284.
6. Chemical vapor transport of platinum and rhodium with oxygen as transport agent. Hannevold, Lenka; Nilsen, Ola; Kjekshus, Arne; Fjellvåg, Helmer. JOURNAL OF CRYSTAL GROWTH 2005;279.
5. Reconstruction and loss of platimun catalyst during oxidation of ammonia. Nilsen, O., Kjekshus, A. and Fjellvåg, H., Appl. Catalysis A 207 (2001) 43-54.
4. Reduction, crystal structure and magnetic properties of Co3-xAlxO4- (0.0 ≤ x ≤ 2.0, 0.0 ≤ ≤ 1). Comparison with the Co/-Al2O3 Fischer Tropsch catalyst. Hansteen, O. H., Fjellvåg, H. and Hauback,B. C. Acta Chem. Scand. 52 (1998) 1285 – 1292.
3. Characterization of Ni on La Modified Al2O3 Catalysts during CO2 Reforming of Methane. Slagtern, Å., Olsbye, U., Blom, R., Dahl, I. M. and Fjellvåg, H. Appl. Catalysis A165 (1997) 379-390.
2. In situ XRD characterization of La-Ni-O catalyst for CO2 reforming of methane. Slagtern, Å., Olsbye, U., Blom, R., Dahl, I. M. and Fjellvåg, H. J. Appl. Catalysis A145 (1996) 375-388.
1. Properties of LaCo1-tCrtO3. Part III Catalytic Activity for CO Oxidation. Tilset, B. G., Slagtern, Å., Dahl, I.M., Fjellvåg, H. and Kjekshus, A., J.Appl. Catalysis 147 (1996) 189-205.