Catalysts - 6 News from the science department by TU Wien

Catalysts - 6 News from the science department by TU Wien

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Two conductors of a chemical reaction

Watching the reaction live

22-Nov-2023 - For the first time, researchers at TU Wien have successfully observed the operating principle of so-called promoters in a catalytic reaction in real-time. These promoters play an important role in technology, but so far there is only limited understanding of how they work. Catalysts are essential ...

catalysts catalysis catalytic reactions
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More complex than expected: Catalysis under the microscope

Chemical analysis on the microscopic scale has shown that the catalyst composition can vary locally even more than expected

08-Jun-2023 - At TU Wien (Vienna), scientists use microscopy techniques to observe chemical reactions on catalysts more precisely than before yielding a wealth of detail. This made clear why some effects cannot be predicted. Catalysts composed from tiny metal particles play an important role in many areas of ...

catalysts catalysis chemical analyses
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Three Eyes See More than Two - monitoring a catalytic reaction with three different microscopies under exactly the same conditions in real time

Information is obtained that none of the methods alone could reveal

30-Sep-2022 - One has to look very closely to exactly understand what processes take place on the surfaces of catalysts. Solid catalysts are often finely structured materials made of tiny crystals. There are various microscopies to monitor chemical processes on such surfaces – they use, for example, ...

catalysts catalysis electron microscopy
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The platinum riddle

How a chemical reaction takes place that, at first glance, should not be possible at the temperatures observed

05-Apr-2022 - What happens when a cat climbs onto a sunflower? The sunflower is unstable, will quickly bend, and the cat will fall to the ground. However, if the cat only needs a quick boost to catch a bird from there, then the sunflower can act as a "metastable intermediate step". This is essentially the ...

catalysts platinum catalysts carbon dioxide
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How acidic are atoms?

Precisely understand and improve chemical properties of surfaces

30-Apr-2021 - The acidity of molecules can be easily determined, but until now it was not possible to measure this important property for atoms on a surface. With a new microscopy technique from the Vienna University of Technology (TU Wien), this has now been achieved. The degree of acidity or alkalinity of a ...

catalysts atomic force microscopy atoms
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Why do metal oxide surfaces behave differently?

New research method answers important questions

15-Jan-2021 - Metal surfaces play a role as catalysts for many important applications - from fuel cells to the purification of car exhaust gases. However, their behaviour is decisively affected by oxygen atoms incorporated into the surface. This phenomenon has been known for a long time, but until now it has ...

catalysts catalysis chemical reactions
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