Zhao Mengmeng, Chen Mengyin, Li Shangxiang, Zhang Pengju, Zhao Hui, Tang Fushun, Ruan Le, Yang Hongbin. Effect of La2O3 Doping on SCR Performance of V2O5-WO3/TiO2 Catalyst[J]. IRON STEEL VANADIUM TITANIUM, 2017, 38(1): 60-68. doi: 10.7513/j.issn.1004-7638.2017.01.011
Citation:
Zhao Mengmeng, Chen Mengyin, Li Shangxiang, Zhang Pengju, Zhao Hui, Tang Fushun, Ruan Le, Yang Hongbin. Effect of La2O3 Doping on SCR Performance of V2O5-WO3/TiO2 Catalyst[J]. IRON STEEL VANADIUM TITANIUM, 2017, 38(1): 60-68. doi: 10.7513/j.issn.1004-7638.2017.01.011
Zhao Mengmeng, Chen Mengyin, Li Shangxiang, Zhang Pengju, Zhao Hui, Tang Fushun, Ruan Le, Yang Hongbin. Effect of La2O3 Doping on SCR Performance of V2O5-WO3/TiO2 Catalyst[J]. IRON STEEL VANADIUM TITANIUM, 2017, 38(1): 60-68. doi: 10.7513/j.issn.1004-7638.2017.01.011
Citation:
Zhao Mengmeng, Chen Mengyin, Li Shangxiang, Zhang Pengju, Zhao Hui, Tang Fushun, Ruan Le, Yang Hongbin. Effect of La2O3 Doping on SCR Performance of V2O5-WO3/TiO2 Catalyst[J]. IRON STEEL VANADIUM TITANIUM, 2017, 38(1): 60-68. doi: 10.7513/j.issn.1004-7638.2017.01.011
1. College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, Guilin 541004, Guangxi, China;
2. Guangxi Solid Waste Management Center, Nanning 530028, Guangxi, China
Lanthanum （La） component was doped on TiO2 supporter by co-precipitation method,and vanadium （V）,tungsten （W） components were then doped on La2O3-TiO2 composite by impregnation method to prepare V2O5-WO3/La2O3-TiO2 catalyst.The effect of La2O3 doping amount on the performance of selective catalytic reduction of NO with NH3 for the obtained catalyst was investigated and various characterizations were employed to analyze the catalyst. Test results of XRD,NH3-in situ DRIFTS,H2-TPR,XPS and UV-vis DRS indicate that La is combined with Ti by La-O-Ti bonds,forming highly dispersed LaOx species which makes TiO2 more thermally stable.However,the redox properties and surface Brønsted acid sites of the catalyst are decreased,which further lowers the catalytic activity,due to the interactions among LaOx,VOx and WOx.
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