News
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Tracking deactivation of zeolite beta with and without a detailed structure model: XRD analysis and in situ studies 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.
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Variable temperature in situ TEM mapping of the thermodynamically stable element distribution in bimetallic Pt–Rh nanoparticles 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 NH 3 slip abatement processes.
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Catalysis group researchers strike gold 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.
Events
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The Hylleraas Annual Meeting 2024 Aug. 19, 2024 9:00 AM
The Hylleraas Annual Meeting 2024 will be held at Sanner Hotel on Aug 19-21.
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Studentslippet Aug. 31, 2024 12:00 AM
Get to know Oslo through Studentslippet! Enjoy fun activities all over the city - for free!
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Kristine Bonnevie lectures 2024: How artificial intelligence helps us understand ourselves and the nature around us Sep. 2, 2024 12:00 AM
Artificial intelligence (AI) and machine learning (ML) as tools in evolutionary biology. With Mackenzie Mathis and Matteo Fumagalli.
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SPARK Norway Educational Forum Sep. 25, 2024 5:00 PM
SPARK Norway Educational Forum are monthly open meetings organized by UiO:Life Science and SPARK Norway partners.
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Digital Life 2024 Oct. 14, 2024 12:00 PM
The annual Centre Digital Life Norway conference will be held at Hurdalsjøen Hotel October 14.-15. 2024