Polyol-Mediated Synthesis of V₂O₅-WO₃/TiO₂ Catalysts for Low-Temperature Selective Catalytic Reduction with Ammonia.

ABSTRACT: We demonstrated highly efficient selective catalytic reduction catalysts by adopting the polyol process, and the prepared catalysts exhibited a high nitrogen oxide (NO_X) removal efficiency of 96% at 250 °C. The V₂O₅ and WO₃ catalyst nanoparticles prepared using the polyol process were smaller (~10 nm) than those prepared using the impregnation method (~20 nm), and the small catalyst size enabled an increase in surface area and catalytic acid sites. The NO_X removal efficiencies at temperatures between 200 and 250 °C were enhanced by approximately 30% compared to those of the catalysts prepared using the conventional impregnation method. The NH₃-temperature-programmed desorption and H₂-temperature-programmed reducti

SUBMITTER: Lee MS 

PROVIDER: S-EPMC9610785 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature