One-step synthesis of ternary MnO2-Fe2O3-CeO2-Ce2O3/CNT catalysts for use in low-temperature NO reduction with NH3

In this article, a facile one-step strategy for the synthesis of ternary MnO2-Fe2O3-CeO2-Ce2O3/carbon nanotubes (CNT) catalysts was discussed. The as-prepared catalysts exhibited 73.6-99.4% NO conversion at 120-180 degrees C at a weight hourly space velocity (WHSV) of 210 000 ml.g(cat)(-1).h(-1), which benefited from the formation of amorphous MnO2, Fe2O3, CeO2, and Ce2O3, as well as high Ce3+ and surface oxygen (O-epsilon) contents. The mechanism of formation of MnO2-Fe2O3-CeO2-Ce2O3/CNT catalysts was also proposed. (C) 2015 Elsevier B.V. All rights reserved.