Sulfur resistance of Ce-Mn/TiO₂ catalysts for low-temperature NH₃-SCR.

ABSTRACT: Ce-Mn/TiO₂ catalyst prepared using a simple impregnation method demonstrated a better low-temperature selective catalytic reduction of NO with NH₃ (NH₃-SCR) activity in comparison with the sol-gel method. The Ce-Mn/TiO₂ catalyst loading with 20% Ce had the best low-temperature activity and achieved a NO conversion rate higher than 90% at 140-260°C with a 99.7% NO conversion rate at 180°C. The Ce-Mn/TiO₂ catalyst only had a 6% NO conversion rate decrease after 100 ppm of SO₂ was added to the stream. When SO₂ was removed from the stream, the catalyst was able to recover completely. The crystal structure, morphology, textural properties and valence state of the metals involving the novel catalysts were investigated u

SUBMITTER: Xu Q 

PROVIDER: S-EPMC5882715 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature