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.

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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