The co-effect of Sb and Nb on the SCR performance of the V2O5/TiO2 catalyst.
The co-effect of Sb and Nb on the SCR performance of the V2O5/TiO2 catalyst.
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DOI：
10.1016/j.jcis.2011.11.026
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发表时间：
2012-02
影响因子：
9.9
通讯作者：
Xuesen Du;Xiang Gao;Yin-cheng Fu;Feng Gao;Zhong-yang Luo;K. Cen
中科院分区：
文献类型：
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作者：
Xuesen Du;Xiang Gao;Yin-cheng Fu;Feng Gao;Zhong-yang Luo;K. Cen
研究了添加Sb和Nb对V2 O 5/TiO 2催化剂选择性催化还原NO反应性能的影响。实验结果表明，Nb或Sb均能提高V2 O 5/TiO 2催化剂的活性。较高的Nb负载量导致较高的N2选择性。Sb和Nb的共掺杂比Sb或Nb的单掺杂具有更好的改善效果。Sb和Nb掺杂的V2 O 5/TiO 2催化剂比V2 O 5/TiO 2催化剂具有更好的抗H2O性能。Sb和Nb的加入也提高了V_2O_5/TiO_2催化剂的抗K_2O中毒能力。采用BET、XRD、TEM、XPS等手段对催化剂进行了表征。结果表明，钒、锑、铌活性组分之间存在良好的相互作用。Sb和Nb的共存会增强氧化还原能力和表面酸性，从而提高SCR性能。
The effect of the Sb and Nb additives on the V2O5/TiO2catalyst for the selective catalytic reduction (SCR) of NO with NH3was investigated. The experimental results show that either Nb or Sb can improve the activity of V2O5/TiO2catalyst. Higher Nb loading led to higher N2selectivity. The co-doping of Sb and Nb showed higher improving effect than the single doping of Sb or Nb. The V2O5/TiO2catalyst doped with Sb and Nb had a better H2O resistance than the V2O5/TiO2catalyst. The addition of Sb and Nb also enhance the resistance of the V2O5/TiO2catalyst to K2O 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.