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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Handler alt om hjernen? May 22, 2024 8:00 AM
Hvordan samspill mellom det biologiske miljøet og genetiske faktorer påvirker mental helse.
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Presentation Technique workshop May 23, 2024 2:15 PM
The day of your bachelor and master defense is approaching, would you appreciate some guidance to make a good presentation?
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SPARK Norway Educational Forum May 29, 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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Rights Retention: Making it easier for authors to share May 30, 2024 12:00 PM
Are you still unsure about what rights retention is and how it works? Join us for this Open Science Lunch and engage in the conversation!
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Celebration of second generation convergence environments May 30, 2024 3:00 PM
The funding period for our second generation convergence environment is coming to an end and we invite you to a pleasant gathering where we will hear the researchers' own experiences from being in a convergence environment. Welcome to join us celebrating their achievements.
