Work

Catalytic Impedance Spectroscopy: Concept and Application on CO2 Methanation

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide 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 2 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.

Source: The Journal of Physical Chemistry Letters

DOI: 10.1021/acs.jpclett.4c02442

Authors: Andreas Borgschulte, Marco Achermann, Marin Nikolic

Institutions: University of Zurich, Swiss Federal Laboratories for Materials Science and Technology

Language: English

Topic: Catalysts for Methane Reforming

Subfield: Catalysis

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funders: Board of the Swiss Federal Institutes of Technology, Bundesamt für Energie