화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.34, 165-171, February, 2016
DOI10.1016/j.jiec.2015.11.006  Export Citation
A novel and environmentally friendly SO4 2-/CeO2 catalyst for the selective catalytic reduction of NO with NH3
Qiulin Zhang†, Jinhui Zhang, Zhongxian Song, Ping Ning, Hao Li, and Xin Liu
  • Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
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The SO4 2-/CeO2 catalyst showed excellent catalytic activity and remarkable resistance to H2O and SO2 for the selective catalytic reduction of NO with NH3. The SO4 2-/CeO2 catalyst with 2.5 wt.% SO4 2- content exhibited more than 90% of NO conversion at 229-485 ℃. The characterization results revealed that the SO4 2- species were highly dispersed on the surface of CeO2 in the SO4 2-/CeO2 catalyst. Moreover, the addition of SO4 2- into CeO2 obviously increased the surface Lewis and Brønsted acid sites, and it was found that only stable (1 1 1) lattice planes of CeO2 can be observed on the SO4 2-/CeO2 catalyst.
Keywords:Cerium oxide;Bronsted acid sites;Lewis acid sites;Selective catalytic reduction;NO conversion
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