(206g) Utilizing Atomic Layer Deposition to Influence Selectivity for Ni Reverse Water Gas Shift Catalysts
AIChE Annual Meeting
2021
2021 Annual Meeting
Particle Technology Forum
Novel Nanoparticles and Nanostructured Catalysis for Energy and Environmental Applications
Monday, November 8, 2021 - 4:45pm to 5:00pm
Metal nanoparticle size and dispersion can influence product selectivity of supported metal catalysts. In the case of CO2 reduction, small, highly dispersed Ni nanoparticles on ceria have shown greater selectivity for the reverse water gas shift (RWGS) reaction over methanation at moderate temperatures. At high Ni loadings, Ni particle size increases, reducing CO selectivity and promoting undesired reactions. In this work, atomic layer deposition (ALD) was leveraged to uniformly deposit Ni nanoparticles on a ceria support with varying Ni loadings. Their performance for RWGS was compared to other Ni/CeO2 catalysts of equivalent weight loadings synthesized by more traditional techniques.