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Published Dec. 1, 2023 3:42 PM

X-ray diffraction is extremely powerful to study the structure of well-ordered, crystalline materials. In this paper, researchers from the Catalysis Section, NAFUMA, the Swiss Norwegian Beamlines, and Haldor Topsoe A/S take it one step further, by developing models for advanced diffraction studies of a disordered material, namely the beta zeolite. Despite the tremendous structural complexity caused by the disorder, these new models make it possible to resolve the degree of deactivation of the zeolite catalyst from a single diffractogram.

Microporous and Mesoporous Materials (2023).

Published Sep. 25, 2023 2:42 PM

In-situ TEM experiments shows that the tendency for elemental mixing- or segregation to occur in Pt–Rh nanoparticles depends on the nanoparticle size and temperature. The smaller nanoparticles (13 nm) are stable in the solid solution configuration over the entire studied temperature range. Larger nanoparticles (13 nm) tends to segregate when cooled to room temperature. The results are of importance to understand the thermodynamics of this specific Pt–Rh nanoparticle system and it add value towards applications like catalysis, whereof e.g. supported Pt–Rh nanoparticles are attractive candidates for NH3 slip abatement processes.

Nanoscale Adv. 5, 5286 (2023).

Published May 11, 2023 9:47 AM

New chemical transformations can be catalyzed with molecular gold compounds or gold nanoparticles. Researchers at the catalysis group have reported a simple and robust protocol for the synthesis of gold(III) compounds that are crucial for the development of these catalytic reactions. The synthesis utilizes heating in a microwave oven, and produces a number of new compounds, quickly and cleanly, in a one-step process.

Dalton Trans. 51, 5082 (2022).

Published Apr. 11, 2023 9:02 AM

Dense ceramic oxygen transport membranes (OTMs) combining high oxygen flux with chemical and mechanical stability find numerous applications in industrial processes where oxygen is extracted from air. In the present publication, Sintef Industry and The Electrochemistry group at SMN have collaborated in a project financed by the Research Council of Norway (CLIMIT 268450) rationalizing the performance limitation of OTMs based on state-of-the-art ceramic composite system.

J. Membrane Sci660, 120875 (2022).

Published Mar. 10, 2023 3:24 PM

Heterogeneous catalysis is a key enabling technology for the transition from a fossil-based society to a renewables-based scenario. Industrial catalysts are always shaped into millimeter-sized catalyst objects suitable for large scale industrial use. However, these catalysts invariably suffer from a loss of performance due to carbon deposits. It is vital to understand how these phenomena occur in these shaped objects, resolved both in time and space.

Journal of Catalysis, Volume 401, 1-6.

Published Mar. 8, 2023 10:59 AM

Joint research between the University of Oslo and Pennsylvania State University resulted in the development of a toolset necessary to understand the chemical changes in amorphous battery materials at atomistic level. This work has been recently published at Chemistry of Materials and has been selected for a cover page of the corresponding issue.

Chemistry of Materials, 35 (7), 2835-2845.

Published Apr. 3, 2019 3:06 PM

There is no doubt that Australia and Japan are two different countries in many ways, for instance from the point of view of their climate, resources, landscape. Such differences are important when considering which renewable energy sources are appropriate to invest into.

Published Mar. 26, 2019 1:52 PM

Professor Knut Willem Ruyter has been appointed as academic ombud at the University of Oslo for the next three years. The ombud is independent of the organisation and will, among other things, provide guidance and advice to academic employees who find themselves in difficult research ethical situations.

Published Apr. 5, 2018 9:30 AM

UiO:Life Science shall recruit, educate and develop talents. Before Christmas the initiative announced that students could apply for summer research projects. The board has decided that as many as 66 students will be offered a project in 2018.