3 years ago

Synthesis of Cu0.5Mg1.5Mn0.5Al0.5Ox mixed oxide from layered double hydroxide precursor as highly efficient catalyst for low-temperature selective catalytic reduction of NOx with NH3

Synthesis of Cu0.5Mg1.5Mn0.5Al0.5Ox mixed oxide from layered double hydroxide precursor as highly efficient catalyst for low-temperature selective catalytic reduction of NOx with NH3
Sining Chen, Qiang Wang, Dermot O'Hare, Qinghua Yan, Cheng Zhang
We report a novel NH3-SCR catalyst Cu0.5Mg1.5Mn0.5Al0.5O x synthesized from layered double hydroxides with superior activity in a wide temperature range and improved SO2 and H2O resistance comparing to conventional doped Mn/γ-Al2O3. This catalyst results in a high NO x removal efficiency of 87.0–96.6% in the low temperature range of 100–250 °C, much better than Mn/γ-Al2O3 (35.0–67.2%). Besides, it exhibits significant resistance to SO2 and H2O due to the existence of Cu and Mg. The promoting effects of Cu and Mg are thoroughly investigated using various physico-chemical techniques. The superior NH3-SCR activity of Cu0.5Mg1.5Mn0.5Al0.5O x catalyst can be associated with its high specific surface area, high reducibility of MnO2 and CuO species, abundance of acid sites, and the well dispersion of MnO2 and CuO species. The interactions between SO2 and NH3, and the degradation mechanism caused by SO2 were investigated using in-situ DRIFT analysis.
You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.