NH3-SCR activity, hydrothermal stability and poison resistance of a zirconium phosphate/Ce0.5Zr0.5O2 catalyst in simulated diesel exhaust

被引：18

作者：

Yu, Jun ^{[1
]}

Si, Zhichun ^{[1
]}

Zhu, Man ^{[2
]}

Wu, Xiaodong ^{[1
,2
]}

Chen, Lei ^{[3
]}

Weng, Duan ^{[1
,2
]}

Zou, Jinshuo ^{[1
]}

机构：

[1] Tsinghua Univ, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China

[2] Tsinghua Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Mat, Beijing 100084, Peoples R China

[3] Xinjiang Prod & Construct Crops, Div 12, Xinjiang, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 102期

基金：

中国国家自然科学基金;

关键词：

V2O5-WO3/TIO2; CATALYST; NOX REDUCTION; EARTH METALS; NITRIC-OXIDE; NH3; AMMONIA; SCR; ALKALI; DEACTIVATION; SPECTROSCOPY;

D O I：

10.1039/c5ra10653b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A ZP/CZ (zirconium phosphate/Ce0.5Zr0.5O2) catalyst exhibits over 80% NOx conversion from 250 to 450 degrees C under a high GHSV of 300 000 h(-1) in the presence of H2O, CO2 and C3H8. Mixing with soot leads to a decrease in NOx conversion of the catalyst at temperatures higher than 350 degrees C. After hydrothermal aging (760 degrees C for 48 h) and sulfur aging (400 degrees C for 48 h), ZP/CZ still possesses over 80% NOx conversions in 289-450 degrees C and 297-466 degrees C respectively, which are significantly better than those of home made Cu-SAPO-34 and vanadium catalysts at higher temperatures. These results indicate that ZP/CZ is a promising catalyst for NOx abatement for diesel engine exhausts.

引用

页码：83594 / 83599

页数：6

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