Our project

TrackAct - Tracking the Active Site in Heterogeneous Catalysis for Emission Control

More than 95% of all chemical products have seen a catalyst during their production, hence, catalysis plays a tremendeous role, presently being a 3 trillion $ / year market of chemical industry. Heterogeneous catalysis is a substantial part of it, and the great importance of emission control for environmental and human health is obvious.

Despite this importance, still very little is understood about the mechanisms on a truly atomic scale which is necessary for better control of function on all length scales up to the macroscopic. Consequently, catalyst design has been more empirical than knowledge-driven up to now. More than 60% of the noble metals produced worldwide are used in catalysis. As noble metals are finite resources, there is an urgent need to reduce their content in catalysts to the effective minimum, the so-called active site. Structural changes under process conditions and their pronounced heterogeneity often pose a great challenge for knowledge-based design. New perspectives are evolving, e.g. in the preparation of defined metal clusters/particles, their characterization, and theoretical modeling, allowing to track and fundamentally understand the active sites in catalytic systems. This is the starting point of this interdisciplinary Collaborative Research Centre, where we aim at a holistic understanding by linking the different length scales and catalyst complexity levels. Our scale-bridging approach connects three areas: (A) size-selected clusters and defined nanoparticles, (B) porous catalysts with noble metal particles of defined size on support oxides with oriented surfaces and (C) hierarchically structured catalysts at the reactor level.

Project Area A

Project Area B

Project Area C

The goal of TrackAct is to identify and track the nature of the active site, to design and manipulate them from bottom-up across the various length scales, and - on a long-term vision - predict and actively control them during operation.

TrackAct officially  started on January 1st 2021 (press release from DFG and KIT). Since January 2025, it is in the second funding phase (press release from DFG https://www.dfg.de/en/service/press/press-releases/2024/press-release-no-47 and KIT).

Auf der Jagd nach dem aktiven Zentrum - Video

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Auf der Jagd nach dem aktiven Zentrum - Video

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Katalyseforschung auf drei Skalenebenen - Video

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Katalyseforschung auf drei Skalenebenen - Video

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News

Here you can find the most recent news.

Conference presentations and sunset at ICEC 13 event.
TrackAct at ICEC

We look back to a fascinating conference fully packed with interesting talks on environmental catalysis. Our 9 TrackAct participants had in total 1 poster (with poster prize!), 2 short oral presentations, 3 oral presentations and 1 plenary lecture in beautiful Sicily! Well done!

Asad Asadli standing in front of his poster on "Development of Catalyst Bed Concepts for Induction Heating for Emission Control"
Poster Prize for Asad Asadli (another one!)

Asad Asadli won a Poster Prize at the International Conference on Environmental Catalysis (ICEC 2025) in Isola delle Femmine/Sicily, Italy. He presented a joint study on induction heating of catalytic reactors from Project C06E, Mercator Fellow Prof. Dr. Silvia Gross and Project B02.

Asad Asadli holding his award at the 58th international Annual Meeting of German Catalytic Scientists, next to Moritz Wolf.
Poster Prize for Asad Asadli

Asad Asadli won the Best Poster Award at the 58th international Annual Meeting of German Catalytic Scientists (Jahrestreffen Deutscher Katalytiker) in Weimar. The poster entitled "Development of Catalyst Bed Concepts for Induction Heating for Emission Control" presented a collaborative work of the new project C06N with the group of TrackAct Mercator Fellow Prof. Dr. Silvia Gross - Congratulations!

Graphical abstract of "Periodic Operation of Three-Way Catalysts: From Synthetic Gas Bench Testing to Real-World Engine Performance"Ind. Eng. Chem. Res. 2025, 64, 16, 8143-8155
Bridging Lab and Engine

Exciting news! A recent study from our colleagues Patrick Lott and Thomas Koch (both C08), published in Industrial & Engineering Chemistry Research, bridges the gap between catalyst performance in the lab and real engine environments.

Check out the full article below to explore how smart cycling strategies can pave the way for cleaner, greener engines.

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Graphical abstract of "Coherent X-ray Diffraction Imaging of a Twinned PtRh Catalyst Nanoparticle under Operando Conditions"ACS Nano 2025, 19, 26, 23552-23563
Coherent X-ray Diffraction Imaging of a Twinned PtRh Catalyst Nanoparticle under Operando Conditions

The team led by Andreas Stierle (DESY, TrackAct project A05) has uncovered “nanoburgers” in platinum‑rhodium nanoparticles, which could hold the key to more efficient catalysts. Using advanced Bragg Coherent Diffraction Imaging at ESRF in Grenoble, the researchers visualized the atomic arrangements and identified surprising defects in these nano‑shaped particles.

Read the full story and discover how “flaws” at the nanoscale can lead to innovation here and the publication below!

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Catalyst molecules PdO on ZrO2 and SnO2, with graphs of CH4 conversion at different temperatures.
Microkinetic Modeling of Support Effects in PdO-Based Methane Oxidation Catalysts

In a recently published article in ACS Catalysis, our colleagues from B4 and INF present two new sets of kinetic parameters that accurately simulate the water inhibition effect during methane oxidation on PdO catalysts supported over SnO₂ and ZrO₂.

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