DU Zhen, FU Yincheng, QIAN Xuyue, et al. Preparation and anti-poisoning behavior of V-Sb-Nb/TiO2 catalysts[J]. Thermal power generation, 2014, 43(7): 72-76.
DU Zhen, FU Yincheng, QIAN Xuyue, et al. Preparation and anti-poisoning behavior of V-Sb-Nb/TiO2 catalysts[J]. Thermal power generation, 2014, 43(7): 72-76.DOI:
V-Sb-Nb/TiO2催化剂的制备及其抗中毒性能研究
摘要
采用浸渍法制备了负载Sb、Nb的V-Sb-Nb/TiO2催化剂
研究了典型中毒物质对其脱硝活性的影响
并将其催化性能与V2O5/TiO2、V2O5-WO3/TiO2做了比较。结果表明
与V2O5/TiO2相比
V-Sb-Nb/TiO2具有良好的抗金属氧化物及氯化物中毒的能力
同时其抗氯化物中毒的性能优于V2O5-WO3/TiO2。另外
在V-Sb-Nb/TiO2催化剂的基础上添加少量的WO3可以进一步提高催化剂脱硝活性。试验表明
Sb和Nb氧化物替代V2O5-WO3/TiO2催化剂(VWTi催化剂)中的WO3在经济技术上可行。
Abstract
The effects of representative poisoning components on catalytic activity of V-Sb-Nb/TiO2 catalyst were investigated
and its performance was compared with that of V2O5/TiO2 and V2O5-WO3/TiO2 catalyst.The results show that the catalytic activity of V-Sb-Nb/TiO2 catalyst doped with metal oxides(such as K2O
Na2O
CaO
PbO)is still higher than that of the fresh V2O5/TiO2 catalyst.Besides
V-Sb-Nb/TiO2 catalyst doped with chlorides(such as KCl
NaCl
CaCl2)has a higher NO reduction efficiency than V2O5-WO3/TiO2 under the same condition.It can be concluded that the V-Sb-Nb/TiO2 catalyst has good antipoisoning ability from metal oxides and chlorides.In addition
in the denitration activity of the V-Sb-Nb/TiO2catalyst can be further enhanced by introducing WO3.In conclusion
the substitution of Sb
Nb for W in commercial commonly used V2O5-WO3/TiO2 catalyst is economically and technically feasible.