一个新的满足未来排放标准的摩托车尾气净化催化剂
采用共沉淀法制备CeO2-ZrO2-La2O3-PrO2-Al2O3复合氧化物载体材料,以浸渍法制备了Pd-Rh, Pt-Rh和Pt-Pd-Rh型整体式催化剂.用N2吸附-脱附、程序升温还原、储氧量和X射线衍射对其进行了表征,并考察了老化前后催化剂的空燃比特性、空速特性和温度特性.结果表明,在三种催化剂中, Pt-Pd-Rh型催化剂表现出更优异的性能.在40000 h-1空速下,新鲜Pt-Pd-Rh型催化剂对C3H8, CO和NO的起燃温度T50分别为239,187和191oC,ΔT （T90-T50）分别为21,3和3oC.老化后, C3H8, CO和NO的T50分别为298,203和223...
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| Published in | 催化学报 Vol. 35; no. 9; pp. 1482 - 1491 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
四川大学化学工程学院,四川成都,610064%四川大学化学学院，教育部绿色化学与技术重点实验室，四川成都610064%四川大学化学工程学院，四川成都610064
2014
四川大学化学学院，教育部绿色化学与技术重点实验室，四川成都610064 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-9837 1872-2067 |
| DOI | 10.1016/S1872-2067(14)60092-9 |
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| Abstract | 采用共沉淀法制备CeO2-ZrO2-La2O3-PrO2-Al2O3复合氧化物载体材料,以浸渍法制备了Pd-Rh, Pt-Rh和Pt-Pd-Rh型整体式催化剂.用N2吸附-脱附、程序升温还原、储氧量和X射线衍射对其进行了表征,并考察了老化前后催化剂的空燃比特性、空速特性和温度特性.结果表明,在三种催化剂中, Pt-Pd-Rh型催化剂表现出更优异的性能.在40000 h-1空速下,新鲜Pt-Pd-Rh型催化剂对C3H8, CO和NO的起燃温度T50分别为239,187和191oC,ΔT （T90-T50）分别为21,3和3oC.老化后, C3H8, CO和NO的T50分别为298,203和223oC,ΔT分别为22,5和13oC,且老化前后空燃比窗口较宽,适合于未来排放标准的摩托车尾气净化. |
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| AbstractList | 采用共沉淀法制备CeO2-ZrO2-La2O3-PrO2-Al2O3复合氧化物载体材料,以浸渍法制备了Pd-Rh, Pt-Rh和Pt-Pd-Rh型整体式催化剂.用N2吸附-脱附、程序升温还原、储氧量和X射线衍射对其进行了表征,并考察了老化前后催化剂的空燃比特性、空速特性和温度特性.结果表明,在三种催化剂中, Pt-Pd-Rh型催化剂表现出更优异的性能.在40000 h-1空速下,新鲜Pt-Pd-Rh型催化剂对C3H8, CO和NO的起燃温度T50分别为239,187和191oC,ΔT (T90-T50)分别为21,3和3oC.老化后, C3H8, CO和NO的T50分别为298,203和223oC,ΔT分别为22,5和13oC,且老化前后空燃比窗口较宽,适合于未来排放标准的摩托车尾气净化. 采用共沉淀法制备CeO2-ZrO2-La2O3-PrO2-Al2O3复合氧化物载体材料,以浸渍法制备了Pd-Rh, Pt-Rh和Pt-Pd-Rh型整体式催化剂.用N2吸附-脱附、程序升温还原、储氧量和X射线衍射对其进行了表征,并考察了老化前后催化剂的空燃比特性、空速特性和温度特性.结果表明,在三种催化剂中, Pt-Pd-Rh型催化剂表现出更优异的性能.在40000 h-1空速下,新鲜Pt-Pd-Rh型催化剂对C3H8, CO和NO的起燃温度T50分别为239,187和191oC,ΔT （T90-T50）分别为21,3和3oC.老化后, C3H8, CO和NO的T50分别为298,203和223oC,ΔT分别为22,5和13oC,且老化前后空燃比窗口较宽,适合于未来排放标准的摩托车尾气净化. |
| Abstract_FL | A new composite oxide material as support, CeO2-ZrO2-La2O3-PrO2-Al2O3, was synthesized by a co-precipitation method. Pd-Rh, Pt-Rh, and Pt-Pd-Rh supported on monolithic carrier catalysts were obtained by an impregnation route. The textural, structural, and reductive properties of the cata-lysts were characterized by N2 adsorption-desorption, temperature-programmed reduction, oxygen storage capacity measurements, and X-ray diffraction. The air-fuel-ratio (A/F), space velocity (SV), and temperature characteristics of the fresh and aged catalysts were investigated on a systematic basis. The results showed that among the three catalysts, Pt-Pd-Rh displayed the best performance. For an SV of 40000 h-1 in the case of fresh Pt-Pd-Rh, the light-off temperatures (T50) for C3H8, CO, and NO were 239, 187, and 191 °C, respectively, with correspondingΔT (T90-T50) values of 21, 3, and 3 °C, respectively. After aging, the T50 for C3H8, CO, and NO were 298, 203, and 223 °C, respec-tively, and theΔT values were 22, 5, and 13 °C, respectively. Moreover, the window widths for the A/F in the case of fresh and aged Pt-Pd-Rh catalysts were wide. Overall, the excellent performance for the Pt-Pd-Rh catalyst makes it suitable as a motorcycle exhaust catalyst, which can meet future emission standards. |
| Author | 王苏宁 崔亚娟 兰丽 史忠华 赵明 龚茂初 方瑞梅 陈思洁 陈耀强 |
| AuthorAffiliation | 四川大学化学工程学院,四川成都610064 四川大学化学学院,教育部绿色化学与技术重点实验室,四川成都610064 |
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| Author_FL | Li Lan Ruimei Fang Zhonghua Shi Sijie Chen Yajuan Cui Ming Zhao Suning Wang Yaoqiang Chen Maochu Gong |
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| Keywords | 整体式催化剂 Motorcycle exhaust purification Space velocity characteristic 摩托车尾气净化 空速特性 Monolithic catalyst Pt-Pd-Rh Temperature characteristic 空燃比特性 铂-钯-铑 温度特性 Air-to-fuel ratio characteristic |
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| Notes | Suning Wang, Yajuan Cui, Li Lan, Zhonghua Shi, Ming Zhao, Maochu Gong, Ruimei Fang, Sijie Chen, Yaoqiang Chen （College of Chemical Engineering, Siehuan University, Chengdu 610064, Sichuan, China b Key Laboratory of Green Chemistry ＆ Technology of Ministry of EducaOon, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China） A new composite oxide material as support, CeO2-ZrO2-La2O3-PrO2-Al2O3, was synthesized by a co-precipitation method. Pd-Rh, Pt-Rh, and Pt-Pd-Rh supported on monolithic carrier catalysts were obtained by an impregnation route. The textural, structural, and reductive properties of the cata-lysts were characterized by N2 adsorption-desorption, temperature-programmed reduction, oxygen storage capacity measurements, and X-ray diffraction. The air-fuel-ratio （A/F）, space velocity （SV）, and temperature characteristics of the fresh and aged catalysts were investigated on a systematic basis. The results showed that among the three catalysts, Pt-Pd-Rh displayed the best performance. |
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| PublicationTitle | 催化学报 |
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| PublicationYear | 2014 |
| Publisher | 四川大学化学工程学院,四川成都,610064%四川大学化学学院，教育部绿色化学与技术重点实验室，四川成都610064%四川大学化学工程学院，四川成都610064 四川大学化学学院，教育部绿色化学与技术重点实验室，四川成都610064 |
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| Snippet | 采用共沉淀法制备CeO2-ZrO2-La2O3-PrO2-Al2O3复合氧化物载体材料,以浸渍法制备了Pd-Rh, Pt-Rh和Pt-Pd-Rh型整体式催化剂.用N2吸附-脱附、程序升温还原、储氧量和X射线衍射对... |
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| SubjectTerms | 摩托车尾气净化 整体式催化剂 温度特性 空燃比特性 空速特性 铂-钯-铑 |
| Title | 一个新的满足未来排放标准的摩托车尾气净化催化剂 |
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