Blar i NTNU Open på forfatter "Van Beek, Wouter"
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A fast, low temperature synthesis method for hexagonal YMnO3: Kinetics, purity, size and shape as studied by in situ X-ray diffraction
Marshall, Kenneth; Blichfeld, Anders Bank; Skjærvø, Susanne Linn; Grendal, Ola Gjønnes; Van Beek, Wouter; Selbach, Sverre Magnus; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2020)The reaction mechanisms, phase development and kinetics of the hydrothermal synthesis of hexagonal‐YMnO3 from Y2O3 and Mn2O3 using in situ X‐ray diffraction are reported under different reaction conditions with temperatures ... -
Identification of carbon species on iron-based catalysts during Fischer-Tropsch synthesis
Pena, Diego; Cognigni, Andrea; Neumayer, Thomas; Van Beek, Wouter; Jones, Debra; Quijada, Melesio; Rønning, Magnus (Journal article; Peer reviewed, 2018)This paper focuses on the use of in situ and ex situ characterisation techniques to provide evidences of carbon species on a commercial iron-based Fischer-Tropsch synthesis catalyst as well as other indices of potential ... -
Kinetics during hydrothermal synthesis of nanosized KxNa1-xNbO3
Skjærvø, Susanne Linn; Wells, Kristin Høydalsvik; Van Beek, Wouter; Grande, Tor; Einarsrud, Mari-Ann (Journal article, 2018)Hydrothermal synthesis is an efficient method of making nanosized functional oxide materials, and it has also been used to synthesize KxNa1−xNbO3 solid solution, a promising lead-free piezoelectric material. However, the ... -
Optimization of Co-Ni-Mg-Al mixed-oxides CO2 methanation catalysts with solution combustion synthesis: On the importance of Co incorporation and basicity
Summa, Paulina; Swirk, Katarzyna; Gopakumar, Jithin; Samojeden, Bogdan; Motak, Monika; Rønning, Magnus; Van Beek, Wouter; Da Costa, Patrick (Peer reviewed; Journal article, 2023)Hydrogenation of CO2 to methane is a promising prospect for the utilization of carbon dioxide. Ni-Mg-Al mixed oxides have been reported as a catalyst for this process. Their promotion with cobalt allows to improve Ni ... -
Structure-performance relationships on Co based Fischer–Tropsch synthesis catalysts: The more defect free the better
Tsakoumis, Nikolaos; Patanou, Eleni; Lögdberg, Sara; Johnsen, Rune; Myrstad, Rune; Van Beek, Wouter; Rytter, Erling; Blekkan, Edd Anders (Journal article; Peer reviewed, 2018)Understanding and utilizing structure–performance relationships in catalytic nanomaterials is the epitome of catalysis science. Knowledge at the atomic level can potentially allow rational design of more selective and ... -
The Effect of Copper Loading on Iron Carbide Formation and Surface Species in Iron‐Based Fischer–Tropsch Synthesis Catalysts
Pena, Diego; Jensen, Lise Saue; Cognigni, Andrea; Myrstad, Rune; Neumayer, Thomas; Van Beek, Wouter; Rønning, Magnus (Journal article; Peer reviewed, 2018)The effect of copper as promoter on iron carbide formation and the nature of surface species on iron‐based catalyst during Fischer–Tropsch synthesis (FTS) was investigated. Iron‐based catalysts (15 wt % of Fe) supported ... -
Understanding the Hydrothermal Formation of NaNbO3: Its Full Reaction Scheme and Kinetics
Skjærvø, Susanne Linn; Ong, Gary K.; Grendal, Ola Gjønnes; Wells, Kristin Høydalsvik; Van Beek, Wouter; Ohara, Koji; Milliron, Delia J.; Tominaka, Satoshi; Grande, Tor; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2021)Sodium niobate (NaNbO3) attracts attention for its great potential in a variety of applications, for instance, due to its unique optical properties. Still, optimization of its synthetic procedures is hard due to the lack ... -
Versatile IR spectroscopy combined with synchrotron XAS–XRD: Chemical, electronic, and structural insights during thermal treatment of MOF materials
Hinokuma, Satoshi; Wiker, Geir; Suganuma, Takuya; Bansode, Atul; Stoian, Dragos; Huertas, Silvia Caminero; Molina, Sonia; Shafir, Alexandr; Rønning, Magnus; Van Beek, Wouter; Urakawa, Atsushi (Journal article; Peer reviewed, 2018)Understanding the physicochemical origin of functional materials generally requires multifaceted information on their material characteristics, which are investigated by various analytical methods. In this respect, a ...