Unbound MEDLINE

The effects of manganese precursors on Mn-based/TiO2 catalysts for catalytic reduction of NO with NH3.

Abstract

Manganese acetate (MnAc) and manganese nitrate (MnN) were employed as precursors for the preparation of MnAc)/TiO2, Mn (N)/TiO2, Mn(Ac)-Ce/TiO2, and Mn(N)-Ce/TiO2 by impregnation. These complexes were used as catalysts in the low-temperature selective catalytic reduction of NO with NH3. The influence of manganese precursors on catalyst characteristics, the reduction activity, and the stability of the catalysts to poisoning by H2O and SO2 were studied. Experiments showed that Mn(N) produced MnO2 with large grain sizes in Mn(N)/TiO2 catalyst. On the contrary, Mn(Ac) led to highly dispersed and amorphous Mn2O3 in Mn (Ac)/TiO2 catalyst, which had better catalytic activity and stability to SO2 at low temperatures. The doping of cerium reduced the differences in catalytic performance between the catalysts derived from different Mn precursors.

Links

  • Aggregator Full Text
  • Authors

    Tong H, Huang Y

    Institution

    Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing, China. tonghua@mail.buct.edu.cn

    Source

    Journal of the Air & Waste Management Association (1995) 62:3 2012 Mar pg 271-7

    MeSH

    Air Pollutants
    Air Pollution
    Ammonia
    Catalysis
    Cerium
    Humans
    Manganese Compounds
    Nitrogen Oxides
    Oxidation-Reduction
    Titanium

    Pub Type(s)

    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    22482285