A novel and environmentally friendly SO 4 2− /CeO 2 catalyst for the selective catalytic reduction of NO with NH 3

• DOI: 10.1016/j.jiec.2015.11.006
• Publication Date: 2015-11-22T00:17:50Z
• Authors: Qiulin Zhang; Jinhui Zhang; Zhongxian Song; Ping Ning; Hao Li; Xin Liu
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract The SO42−/CeO2 catalyst showed excellent catalytic activity and remarkable resistance to H2O and SO2 for the selective catalytic reduction of NO with NH3. The SO42−/CeO2 catalyst with 2.5 wt.% SO42− content exhibited more than 90% of NO conversion at 229–485 °C. The characterization results revealed that the SO42− species were highly dispersed on the surface of CeO2 in the SO42−/CeO2 catalyst. Moreover, the addition of SO42− into CeO2 obviously increased the surface Lewis and Bronsted acid sites, and it was found that only stable (1 1 1) lattice planes of CeO2 can be observed on the SO42−/CeO2 catalyst.