화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.19, No.4, 1272-1279, July, 2013
DOI10.1016/j.jiec.2012.12.028  Export Citation
A contrastive study of the introduction of cobalt as a modifier for active components and supports of catalysts for NH3-SCR
Xiaopeng Zhang, Boxiong Shen†, Kai Wang, and Jianhong Chen
  • College of Environmental Science and Engineering, Nankai University, 94 Weijin Road, Tianjin 300071, People’s Republic of China
E-mail:
‘Three catalysts Mn/Ce-ZrOX, Mn-Co/Ce-ZrOX and Mn/Co-Ce-ZrOX were used for low-temperature NH3-SCR of NO. XRD, TPR and XPS were performed to characterize the physicochemical property of the catalysts. Experimental results showed that Mn/Co-Ce-ZrOX had a higher dispersion of manganese oxides, a better redox property, more surface acid sites and more surface adsorbed oxygen species and Mn4+ ion. These facts caused a better low-temperature activity for Mn/Co-Ce-ZrOX which was 99.0% at 180 ℃. Furthermore, Mn/Co-Ce-ZrOX showed the best resistance to SO2 and H2O which mainly because the introduction of cobalt inhibited the formation of sulfate salts and hydroxyls on the surface of Mn/Co-Ce-ZrOX.
Keywords:Low temperature;Selective catalytic reduction;Cobalt;Modification;SO2 poisoning
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