Ceria-Supported Cobalt Catalyst for Low-Temperature Methanation at Low Partial Pressures of CO₂.

ABSTRACT: The direct catalytic conversion of atmospheric CO₂ to valuable chemicals is a promising solution to avert negative consequences of rising CO₂ concentration. However, heterogeneous catalysts efficient at low partial pressures of CO₂ still need to be developed. Here, we explore Co/CeO₂ as a catalyst for the methanation of diluted CO₂ streams. This material displays an excellent performance at reaction temperatures as low as 175 °C and CO₂ partial pressures as low as 0.4 mbar (the atmospheric CO₂ concentration). To gain mechanistic understanding of this unusual activity, we employed in situ X-ray photoelectron spectroscopy and operando infrared spectroscopy. The higher surface concentration and reactivity of formates

SUBMITTER: Struijs JJC 

PROVIDER: S-EPMC10107782 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature