NOx Removal Performance on Self-Propagating High-Temperature Synthesis Prepared TiCe0.2W0.2Ox Catalyst

Abstract

Abstract:

In order to broaden the temperature window of nitrogen oxide removal efficiency of selective catalytic reduction （SCR） catalyst, the research of Ti-Ce-W mixed oxide catalysts was conducted. Among a series of Ti-Ce-W mixed oxide catalysts prepared by SHS (self-propagating high-temperature synthesis) method, catalyst with n(W)∶n(Ti)=0.2(n is the amount of substance) showed a 100% NO removal efficiency from 200 to 440 ℃ and 100% N2 selectivity below 400 ℃. The SCR characteristic of TiC0.2W0.2Ox was also tested under high GHSV( gas hourly space velocity) of 11 400 h-1. Besides by directly deposit the catalyst on cordierite carrier, a 95% NO removal efficiency and a 100% N2 selectivity from 250 to 450 ℃ were obtained.

Key words: selective catalytic reduction （SCR）, nitrogen oxide, self-propagating hightemperature synthesis (SHS), cordierite carrier； diesel

CLC Number:

TK 414.5

YANG Yang,LIN He,CHEN Ting,HUANG Zhen. NOx Removal Performance on Self-Propagating High-Temperature Synthesis Prepared TiCe0.2W0.2Ox Catalyst[J]. Journal of Shanghai Jiaotong University, 2014, 48(06): 761-766.

References

［1］Lietti L, Ramis G, Berti F. Chemical and mechanistic aspects of the selective catalytic reduction of NOx by ammonia over oxide catalysts: A review［J］. Applied Catalysis B: Environmental, 1998, 18(1): 136.

［2］管斌, 周校平, 林赫, 等. NH3SCR 法降低柴油机 NOx 排放的研究进展［J］. 车用发动机, 2007, 30(5): 18.

GUAN Bin，ZHOU Xiaoping，LIN He，et al. Progress of research on reducing NO emission of diesel engine with NH3SCR technology ［J］.Vehicle Engine, 2007, 30(5): 18.

［3］刘福东, 单文坡, 石晓燕, 等. 用于 NH3 选择性催化还原 NO 的非钒基催化剂研究进展［J］.催化学报, 2011, 32(7):11131128.

LIU Fudong, SHAN Wenpo, SHI Xiaoyan, et al. Research progress in vanadiumfree catalysts for the selective catalytic reduction of NO with NH3［J］. Chinese Journal of Catalysis, 2011, 32(7):11131128.

［4］Apostolescu N, Geiger B, Hizbullah K, et al. Selective catalytic reduction of nitrogen oxides by ammonia on iron oxide catalysts［J］. Applied Catalysis B: Environmental, 2006, 62(1): 104114.

［5］Jiang B, Liu Y, Wu Z. Lowtemperature selective catalytic reduction of NO on MnOx/TiO2 prepared by different methods［J］. Journal of Hazardous Materials, 2009, 162(2): 12491254.

［6］Si Z, Weng D, Wu X, et al. Structure, acidity and activity of CuOx/WOxZrO2 catalyst for selective catalytic reduction of NO by NH3 ［J］. Journal of Catalysis, 2010, 271(1): 4351.

［7］Xu W, Yu Y, Zhang C, et al. Selective catalytic reduction of NO by NH3 over a Ce/TiO2 catalyst［J］. Catalysis Communications, 2008, 9(6): 14531457.

［8］Reddy B M, Khan A, Yamada Y, et al. Structural characterization of CeO2TiO2 and V2O5/CeO2TiO2 catalysts by Raman and XPS techniques［J］. The Journal of Physical Chemistry B, 2003, 107(22): 51625167.

［9］Long R Q, Yang R T. Superior FeZSM5 catalyst for selective catalytic reduction of nitric oxide by ammonia［J］. Journal of the American Chemical Society, 1999, 121(23): 55955596.

［10］Xu W, He H, Yu Y. Deactivation of a Ce/TiO2 catalyst by SO2 in the selective catalytic reduction of NO by NH3［J］. The Journal of Physical Chemistry C, 2009, 113(11): 44264432.

［11］Gao X, Jiang Y, Zhong Y, et al. The activity and characterization of CeO2TiO2 catalysts prepared by the solgel method for selective catalytic reduction of NO with NH3 ［J］. Journal of Hazardous Materials, 2010, 174(1): 734739.

［12］Gao X, Jiang Y, Fu Y, et al. Preparation and characterization of CeO2/TiO2 catalysts for selective catalytic reduction of NO with NH3 ［J］. Catalysis Communications, 2010, 11(5): 465469.

［13］Shan W, Liu F, He H, et al. The remarkable improvement of a CeTi based catalyst for NOx abatement, prepared by a homogeneous precipitation method［J］. Chem Cat Chem, 2011, 3(8): 12861289.

［14］Shan W, Liu F, He H, et al. A superior CeWTi mixed oxide catalyst for the selective catalytic reduction of NOx with NH3 ［J］. Applied Catalysis B: Environmental, 2012,115116: 100106.

［15］傅正义. SHS 技术研究进展——纪念 SHS 技术诞生三十周年［J］. 复合材料学报, 2000, 17(1): 510.

FU Zhengyi. Progress and present status of SHS research—30th anniversary of SHS ［J］. Acta Material Composite Sinica, 2000, 17(1): 510.

［16］Guan B, Lin H, Zhu L, et al. Selective catalytic reduction of NOx with NH3 over Mn, Ce substitution Ti0.9V0.1O2-δ nanocomposites catalysts prepared by selfpropagating hightemperature synthesis method ［J］. The Journal of Physical Chemistry C, 2011, 115(26): 1285012863.

［17］朱霖, 林赫, 管斌, 等. SHS 方法制备的锰铁系 NH3SCR 催化剂的性能研究和机理分析［J］. 车用发动机, 2012 (3):7277.

ZHU Lin, LIN He , GUAN Bin, et al. Investigations of performance and mechanism on SHSprepared ferromanganese NH3SCR catalyst ［J］. Vehicle Engine, 2012(3):7277.

［18］张桂红. 堇青石基钒系 SCR 脱硝催化剂的制备工艺及脱硝性能研究［D］. 重庆：重庆大学化学化工学院, 2010.

［19］董文杰, 周德智, 林赫, 等. 用于 NH3SCR 的锰铈基催化剂的改性研究［J］. 车用发动机, 2013(3): 4044.

DONG Wenjie, ZHOU Dezhi, LIN He, et al. Modification of manganese ceriumbased catalysts for NH3SCR ［J］. Vehicle Engine, 2013(3): 4044.

[1]	WANG Tiantian1 (王天田), LIN Feng1* (林峰), HU Jie1 (胡杰),KE Yuqiang2 (柯于强), ZHANG Yueqiu3 (张岳秋). Control Strategy Research of a Selective Catalytic Reduction System for Heavy-Duty Application [J]. Journal of shanghai Jiaotong University (Science), 2017, 22(5): 577-588.
[2]	YAN Ying,ZHANG Wugao,CHEN Xiaoling,LIU Jia . Experimental Study on Dimethylether SCR NOx Reduction [J]. Journal of Shanghai Jiaotong University, 2010, 44(10): 1347-1351.