The co-effect of Sb and Nb on the SCR performance of the V2O5/TiO2 catalyst

Xuesen Du; Xiang Gao; Yincheng Fu; Feng Gao; Zhongyang Luo; Kefa Cen

doi:10.1016/j.jcis.2011.11.026

The co-effect of Sb and Nb on the SCR performance of the V2O5/TiO2 catalyst

J Colloid Interface Sci. 2012 Feb 15;368(1):406-12. doi: 10.1016/j.jcis.2011.11.026. Epub 2011 Nov 22.

Authors

Xuesen Du¹, Xiang Gao, Yincheng Fu, Feng Gao, Zhongyang Luo, Kefa Cen

Affiliation

¹ State Key Laboratory of Clean Energy Utilization, Zhejiang University, 38 Zheda Road, Hangzhou 310027, PR China.

PMID: 22169236
DOI: 10.1016/j.jcis.2011.11.026

Abstract

The effect of the Sb and Nb additives on the V(2)O(5)/TiO(2) catalyst for the selective catalytic reduction (SCR) of NO with NH(3) was investigated. The experimental results show that either Nb or Sb can improve the activity of V(2)O(5)/TiO(2) catalyst. Higher Nb loading led to higher N(2) selectivity. The co-doping of Sb and Nb showed higher improving effect than the single doping of Sb or Nb. The V(2)O(5)/TiO(2) catalyst doped with Sb and Nb had a better H(2)O resistance than the V(2)O(5)/TiO(2) catalyst. The addition of Sb and Nb also enhance the resistance of the V(2)O(5)/TiO(2) catalyst to K(2)O poisoning. The catalysts were characterized by BET, XRD, TEM, and XPS. The results showed that the active components of V, Sb, and Nb were well interacting with each other. The coexistence of Sb and Nb will enhance the redox ability and surface acidity and thus promote the SCR performance.