2024/05/29 by Jörg Fischer, Mikhail Agrachev, Jörg Forrer +4
Biochemistry, Genetics and Molecular Biology · Chemistry · Energy · #Electrocatalysts for Energy Conversion #Electrochemical Analysis and Applications #Electron Spin Resonance Studies
paper · pdf · doi:10.2533/chimia.2024.326
crossref issued 2024/05/29 · crossref published 2024/05/29 · crossref published-online 2024/05/29 · openalex publication_date 2024/05/29 · crossref created 2024/05/29 · crossref deposited 2024/06/01 · openalex created_date 2025/10/10 · crossref indexed 2026/07/28 · openalex updated_date 2026/07/28
Electron paramagnetic resonance (EPR) spectroscopy is a powerful tool for in situ/operando tracking of catalytic reactions that involve paramagnetic species either as a catalyst (e.g. transition metal ions or defects), reaction intermediates (radicals) or poisoning agents such as coke. This article provides a summary of recent experimental examples and developments in resonator design as well as detection schemes that were carried out in our group. Opportunities for applying this technique are illustrated by examples, including studies of transition metal exchanged zeolites and metal-free zeolites as well as metal oxide catalysts. The inherent limitations of EPR applied at high temperatures are discussed, as well as strategies in reducing or lifting these restrictions are evaluated and ideas for future improvements and methodologies are discussed.