05- CO2 Hydrogenation: Comparing Ru catalysts with partially reducible oxide supports to non-partially reducible oxides in reverse water-gas-shift (RWGS)

Primary Author

Martin Isai Ayala

Additional Author(s)

Caleb D. Watson

Faculty Mentor

Dr. Gary Jacobs

Abstract

This set of experiments seeks to show how catalysts with partially reducible oxide supports favor formate intermediates (important for RWGS) that further dissociates into CO; the CO is further hydrogenated by surface hydrogen into methane (CH4). The catalysts under investigation were Ru-Cu/ZrO2, Ru/Al2O3, Ru/ZrO2, Ru/CeO2, Ru/CeZrO2, Ru/MgO, and Ru/TiO2. Results for Ru/CeO2, Ru/ZrO2, Ru/Al2O3 are discussed in this presentation. 1% Ru/ZrO2 had the highest CH4 activity with a reaction rate and selectivity of 1.35 s-1 and 97.3%, respectively. Compared to 5 Ru/Al2O3 reaction rate of 0.06 s-1, those for 1% Ru/Zro2 and 5% Ru/ZrO2 catalysts were larger by 23-fold (1.35 s-1) and 5-fold (0.31 s -1), respectively.

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1 thought on “05- CO2 Hydrogenation: Comparing Ru catalysts with partially reducible oxide supports to non-partially reducible oxides in reverse water-gas-shift (RWGS)”

  1. Great presentation. I do like how it was segmented into section and how you addressed each section. I do want to state that you need to keep in mind of your audience and they may not be fully aware of your area of study. I state that because you may want to explain what the results mean in reference to your objectives. In other words, tie them for the viewer and not letting the view have to come up with their own narrative.

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