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| 1 | Modification of CeO_2-ZrO_2 catalyst by potassium for NOx-assisted soot oxidation显示文摘Potassium-modified ceria-zirconia catalyst was synthesized by wetness impregnation method.The ageing treatment was performed in static air at 800°C for 20 hr to evaluate the thermal stability of the catalyst.The catalysts were characterized by X-ray diffraction,BET surface area,oxygen storage capacity,NOx-temperature programmed desorption and soot-temperature programmed oxidation measurements.By introduction of potassium,the maximum soot oxidation rate temperature(Tm) of the ceria-zirconia based catalyst decreased from 525 to 428°C in the presence of NO under a loose contact mode.The shift of Tm of the K-modified catalyst after ageing is only 15°C.The enhanced activity of the aged catalyst mainly lies in the promotional effect of potassium on the NOx/oxygen storage capacity as well as the soot-catalyst contact. | DuanWeng Jia Li, Xiaodong Wu Zhichun Si | 2011 | Journal of Environmental Sciences2011，23，1： | 7 |
| 2 | 稀燃条件下NO_x净化催化剂的研究进展显示文摘稀燃条件下NOx的催化净化是当前催化领域研究的热点,本文着重分析了金属氧化物催化剂在碳氢化合物选择性催化还原NOx反应中的活性及其影响因素,并且与分子筛催化剂、贵金属催化剂进行了比较,描述了催化反应的机理.针对三类催化剂的不同特点,对当前组合型催化剂研究的现状以及NOx的吸附-还原技术进行了评述.最后指出了今后的研究方向. | 刘志明 郝吉明 傅立新 李俊华 崔翔宇 | 2004 | 科学通报2004，49，20： | 7 |
| 3 | 柴油机排气PM与NO_x同时催化净化技术显示文摘介绍了柴油机排气PM和NOx同时催化净化后处理技术,从同时去除PM与NOx的催化剂、低温等离 子体协同催化还原技术以及其他技术的角度,概述了这方面的研究进展,提出了今后的研究方向。 | 陈育春 付名利 叶代启 梁红 | 2005 | 车用发动机2005，，1： | 1 |
| 4 | Simultaneous Removal of Soot and NO_x over Precious Metal Catalysts O_2-Rich Atmospheres and in the Presence of H_2O and SO_2显示文摘The activities of ZrO_2-supported precious metal catalysts for simultaneous removal of soot and NO_x in the presence of rich O_2and H_2O as well as SO_2 have been studied by keeping loose contact between catalyst and soot.The results show that only Ru,Ir and Rh have catalytic activity for simultaneous removal of soot and NO_x and the order of catalytic activity is Ru > Ir > Rh.Pt has the catalytic activity only for the removal of soot,and Ag,Pd,and Au have hardly any catalytic activities for the removal of soot and NO_x.The relationships between catalytic activity of precious metal catalysts and various reaction conditions were discussed. | 朱荣淑 姚泽 顾婷坤 杨荣 曹罡 欧阳峰 | 2015 | Journal of Donghua University(English Edition)2015，32，5： | 0 |
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