Catalytic Impedance Spectroscopy: Concept and Application on CO<sub>2</sub> Methanation
Complex modeling of periodic excitation combined with time-resolved product detection is used to describe the complex response function of a catalytic system. We describe this concept of catalytic impedance spectroscopy (CIS) and the underlying general experimental approach and a concrete setup. The feasibility of CIS is experimentally demonstrated along the catalytic CO<sub>2</sub> methanation reaction. The measurements confirm the theoretically anticipated rate-determining step of HCO* → CH* on Ni catalysts. Limitations and prospects of CIS to unravel reaction mechanisms are discussed.
Authors
- Marin Nikolić (ORCID: https://orcid.org/0000-0003-1363-4259)
- Andreas Borgschulte (ORCID: https://orcid.org/0000-0001-6250-4667)
- Marco Achermann
Institutions
- University of Zurich (CH)
- Swiss Federal Laboratories for Materials Science and Technology (CH)
Publication Details
- Journal
- The Journal of Physical Chemistry Letters
- Published
- 2024-10-11
- DOI
- https://doi.org/10.1021/acs.jpclett.4c02442
- Citations
- 2
- Primary Topic
- Zeolite Catalysis and Synthesis
- Type
- article
- Field-Weighted Citation Impact
- 0.32
Funders
- Board of the Swiss Federal Institutes of Technology
- Bundesamt für Energie