Operando Photoelectron Photoion Coincidence Spectroscopy to Detect Short-lived Intermediates in Catalysis
Abstract
Understanding the reaction mechanism is critical yet challenging in heterogeneous catalysis. Reactive intermediates, e.g., radicals and ketenes, are short-lived and often evade detection. In this review, we summarize recent developments with operando photoelectron photoion coincidence (PEPICO) spectroscopy as a versatile tool capable of detecting elusive intermediates. PEPICO combines the advantages of mass spectrometry and the isomer-selectivity of threshold photoelectron spectroscopy. Recent applications of PEPICO in understanding catalyst synthesis and catalytic reaction mechanisms involving gaseous and surface-confined radical and ketene chemistry will be summarized. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000610063Publication status
publishedExternal links
Journal / series
ChimiaVolume
Pages / Article No.
Publisher
Swiss Chemical SocietySubject
Catalysis; Elusive intermediates; Photoionization; Reaction mechanism; VUVFunding
180544 - NCCR Catalysis (phase I) (SNF)
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