Catalysts - 12 News from the science department by TU Wien from Austria for the chemistry industry

Catalysts - 12 News from the science department by TU Wien from Austria for the chemistry industry

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Two hundred times better catalysts thanks to carbon

“For a long time, the use of carbon as a carrier material for catalysis had something almost magical”

12-Nov-2024 - When you place metal nanoparticles on carbon, they become much more active. What was previously only assumed based on experience could now be explained in detail for the first time at TU Wien (Vienna). Precious metals play an important role in the chemical industry as catalysts: With the help of ...

catalysts carbon catalysis
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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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New catalysts for solar hydrogen production

Researchers at TU Wien are developing a layered photocatalyst that can be used to produce hydrogen very efficiently from water

20-Jul-2023 - Finding sustainable and clean fuels is crucial in today’s global energy and climate crisis. One promising candidate that is increasingly gaining relevance is hydrogen. However, today’s industrial hydrogen production still has a considerable CO2 footprint, especially considering processes like ...

catalysts photocatalysts hydrogen
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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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Recycling Greenhouse Gases

Novel perovskite catalysts could be used wherever methane and carbon dioxide are produced simultaneously

05-Sep-2022 - CO2 and methane can be turned into valuable products. But until now the catalysts required for such reactions quickly lose their effectiveness. TU Wien has now developed more stable alternatives. Wherever the production of harmful greenhouse gases cannot be prevented, they should be converted ...

catalysts carbon dioxide chemical reactions
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Photocatalysis: the Nano-Sponge Revolution

Creating a sponge-like hole structure on the nanometre scale that allows small molecules to pass through, record-breaking chemical reactivity was achieved

16-Feb-2022 - Catalysts are often solid materials whose surface comes into contact with gases or liquids, thereby enabling certain chemical reactions. However, this means that any atoms of the catalyst that are not on the surface serve no real purpose. Therefore, it is important to produce extremely porous ...

catalysts photocatalysts catalyst materials
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Catalysts: Poisoned and very much alive at the same time

A surprising discovery: A catalyst seems to contradict usual laws and can exhibit completely different activity states at the same time

17-Nov-2021 - Sometimes chemical reactions in the lab work the way you imagine them to, and sometimes they don't. Neither is unusual. What is highly unusual, however, is what a research team at TU Wien has now observed when studying hydrogen oxidation on a rhodium catalyst: The surface of a rhodium foil can be ...

catalysts rhodium catalysts catalysis
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Nanoparticles: The Complex Rhythm of Chemistry

Nanoparticles are often used as catalysts. The chemical reactions on their surface are more complex than previously thought

26-May-2021 - Most of commercial chemicals are produced using catalysts. Usually, these catalysts consist of tiny metal nanoparticles that are placed on an oxidic support. Similar to a cut diamond, whose surface consists of different facets oriented in different directions, a catalytic nanoparticle also ...

catalysts catalysis chemical reactions
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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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New catalyst for lower CO2 emissions

Converting carbon dioxide into other useful substances, such as synthetic fuels

22-Apr-2021 - Which catalyst can be used to convert carbon dioxide into other substances? Scientists at TU Wien have now created a new material, which belongs to the class of perovskites. If the CO2 content of the atmosphere is not to increase any further, carbon dioxide must be converted into something else. ...

catalysts carbon dioxide CO2
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