Catalytic Impedance Spectroscopy: Concept and Application on CO2 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 CO2 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.
October 11, 2024
Research paper Journal of Physical Chemistry
Research paper Journal of Physical Chemistry

Read the full paper online:

Catalytic Impedance Spectroscopy: Concept and Application on CO2 Methanation

Andreas Borgschulte, Marco Achermann, and Marin Nikolic
The Journal of Physical Chemistry Letters 2024 15 (42), 10451-10456


DOI: 10.1021/acs.jpclett.4c02442

Share this post
PUBLCATIONS

Latest findings from research