Operando time-gated Raman spectroscopy for heterogeneous catalysis.
Operando Raman spectroscopy is a powerful tool to shine light on solid catalysts. Unfortunately, intense background fluorescence often obscures Raman spectra to the extent that they become uninterpretable. In this work, we use time-gated Raman spectroscopy to improve the spectral quality by the suppression of fluorescence background based on its relatively slow dynamics compared to Raman scattering. The technique is based on an innovative detector design and has been used to study the formation of carbon deposits and subsequent catalyst deactivation during propane dehydrogenation over Pt-Sn-based catalysts. Furthermore, we show the general benefits of time-gating for operando Raman spectroscopy.
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About the speaker
Robin Vogel is a PhD candidate who works under the supervision of Prof. Bert Weckhuysen and Dr. Fredy Rabouw in the Inorganic Chemistry and Catalysis (ICC) group at Utrecht University. The group focuses on the characterization and optimization of well-defined heterogenous catalyst materials for sustainable conversion processes. In this context, the speaker focuses on the development of operando spectroscopy and microscopy techniques to understand the working mechanisms of solid catalysts in action.
