TY - JOUR
T1 - Promotional effect of tungsten incorporation on catalytic performance of Ti0.8Zr0.2Ce0.2O2.4/Al2O3-TiO2-SiO2 for selective catalytic reduction of NOx by NH3
AU - Fu, Wei Liang
AU - Shen, Yue Song
AU - Zhu, She Min
AU - Shen, Shu Bao
N1 - Publisher Copyright:
©, 2014, Science Press. All right reserved.
PY - 2014/12/1
Y1 - 2014/12/1
N2 - Series TZC/ATS catalysts and the tungsten-added samples, with Ti0.8Zr0.2Ce0.2O2.4 (TZC for short) as active component and Al2O3-TiO2-SiO2 (ATS for short) as catalyst carrier, were prepared by extrusion method. Effects of tungsten incorporation on catalytic performance and tolerance towards K2O and CaO poisoning of TZC/ATS for deNOx by NH3 selective catalytic reduction (NH3-SCR) were mainly studied, and anti K2O and CaO poisoning abilities between the TZCW0.4/ATS and the V2O5(WO3)/TiO2 were comparatively analyzed. Moreover, the specific surface, solid-phase structure, morphology and surface acidity of the catalysts were characterized by techniques of N2-BET, XRD, SEM and NH3-TPD, respectively. Results showed that the TZCW0.4/ATS catalyst exhibited the highest catalytic activity and the best stability for deNOx by NH3-SCR when the Ti/Zr/Ce/W molar ratio of the active component was 4:1:1:0.4. Furthermore, tungsten incorporation greatly enhanced the anti K2O and CaO poisoning abilities of the TZCW0.4/ATS catalyst, and these anti-poisoning abilities of the TZCW0.4/ATS were much stronger than those of the V2O5(WO3)/TiO2. The promotional effect on catalytic deNOx performance was caused by increased specific surface area and enhanced surface acidity of the TZCW0.4/ATS catalyst after tungsten incorporation.
AB - Series TZC/ATS catalysts and the tungsten-added samples, with Ti0.8Zr0.2Ce0.2O2.4 (TZC for short) as active component and Al2O3-TiO2-SiO2 (ATS for short) as catalyst carrier, were prepared by extrusion method. Effects of tungsten incorporation on catalytic performance and tolerance towards K2O and CaO poisoning of TZC/ATS for deNOx by NH3 selective catalytic reduction (NH3-SCR) were mainly studied, and anti K2O and CaO poisoning abilities between the TZCW0.4/ATS and the V2O5(WO3)/TiO2 were comparatively analyzed. Moreover, the specific surface, solid-phase structure, morphology and surface acidity of the catalysts were characterized by techniques of N2-BET, XRD, SEM and NH3-TPD, respectively. Results showed that the TZCW0.4/ATS catalyst exhibited the highest catalytic activity and the best stability for deNOx by NH3-SCR when the Ti/Zr/Ce/W molar ratio of the active component was 4:1:1:0.4. Furthermore, tungsten incorporation greatly enhanced the anti K2O and CaO poisoning abilities of the TZCW0.4/ATS catalyst, and these anti-poisoning abilities of the TZCW0.4/ATS were much stronger than those of the V2O5(WO3)/TiO2. The promotional effect on catalytic deNOx performance was caused by increased specific surface area and enhanced surface acidity of the TZCW0.4/ATS catalyst after tungsten incorporation.
KW - Anti CaO poisoning
KW - Anti KO poisoning
KW - Cement flue gas deNO
KW - TiZrCeO/AlO-TiO-SiO catalyst
KW - Tungsten incorporation
UR - http://www.scopus.com/inward/record.url?scp=84920470738&partnerID=8YFLogxK
U2 - 10.15541/jim20140196
DO - 10.15541/jim20140196
M3 - 文章
AN - SCOPUS:84920470738
SN - 1000-324X
VL - 29
SP - 1294
EP - 1300
JO - Wuji Cailiao Xuebao/Journal of Inorganic Materials
JF - Wuji Cailiao Xuebao/Journal of Inorganic Materials
IS - 12
ER -