Alternative methods to produce fuels from sustainable sources are imperative to not only mitigate negative environmental impacts but to also promote national energy security. Our group’s research efforts at the Naval Research Laboratory have focused on converting CO2, a common greenhouse gas, to long chain hydrocarbons through a two-step process involving the reverse water gas-shift (RWGS) and Fischer-Tropsch reactions. The RWGS is of particular interest as there is a need to develop highly active, stable, and selective catalysts that are capable of operating at lower temperatures (&lt; 450 °C). To this end, alkali promoted transition metal carbides, such as Mo2C or WC, have been shown to exhibit both high CO2 conversions and CO selectivity while operating at 300 °C. To improve particle dispersion and stability, these catalysts are often deposited on transition metal oxide supports such as γ-Al2O3. However, the support identity can significantly influence the observed catalytic activity and selectivity, including for the RWGS. This presentation will discuss recent efforts to elucidate the impact that transition metal oxide supports, such as CeO2, SiO2, ZrO2, MgO, and γ-Al2O3, have on the rate of CO production over potassium promoted Mo2C catalysts for the RWGS at 300 °C.

Evaluating the influence of metal oxide supports on K-promoted Mo2C catalysts for the reverse water gas-shift reaction

Fall 2022 abstracts, posters, and presentations will launch in mid-September.

ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.