(294f) Pulsed Photon Illumination to Control Catalytic Chemistry at a Metal Nanoparticle Surfaces
AIChE Annual Meeting
2022
2022 Annual Meeting
Catalysis and Reaction Engineering Division
Fundamentals of Catalysis and Surface Science V: Electrocatalysis and photocatalysis
Tuesday, November 15, 2022 - 2:20pm to 2:42pm
In this talk we will address both of these missing insights and use them to guide the design of catalytic processes that are optimized through the introduction of pulsed photon illumination. We experimentally extracted the influence of photon wavelength on adsorbate binding energies on metal nanoparticle surfaces by pairing CO temperature programmed desorption (TPD) experiments with visible light exposure on Pt and Pd nanoparticle surfaces. The results suggest that wavelength specific photon illumination can be used to control specific adsorbate-metal bond activation in-situ. We apply these insights to investigate the prospect of dynamic pulsed light illumination of supported metal catalysts to synthesize acetic acid (CH3COOH) directly from CH4 and CO2, a reaction that has only been demonstrated using pulsed reactant flows.