A new monolithic Pt-Pd-Rh motorcycle exhaust catalyst to meet future emission standards

doi:10.1016/S1872-2067(14)60092-9

Abstract

Abstract:

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 catalysts 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 ℃, respectively, with corresponding ΔT (T₉₀-T₅₀) values of 21, 3, and 3 ℃, respectively. After aging, the T₅₀ for C₃H₈, CO, and NO were 298, 203, and 223 ℃, respectively, and the ΔT values were 22, 5, and 13 ℃, 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.

Key words: Motorcycle exhaust purification, Monolithic catalyst, Pt-Pd-Rh, Air-to-fuel ratio characteristic, Space velocity characteristic, Temperature characteristic

Suning Wang, Yajuan Cui, Li Lan, Zhonghua Shi, Ming Zhao, Maochu Gong, Ruimei Fang, Sijie Chen, Yaoqiang Chen. A new monolithic Pt-Pd-Rh motorcycle exhaust catalyst to meet future emission standards[J]. Chinese Journal of Catalysis, 2014, 35(9): 1482-1491.

×
share this article

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(14)60092-9

https://www.cjcatal.com/EN/Y2014/V35/I9/1482

References

[1] Xin Q, Lin L W. Chin J Catal (辛勤, 林励吾. 催化学报), 2013, 34: 401
[2] China Vehicle Emission Control Annual Report. Ministry of Environmental Protection of the People's Republic of China. Beijing (中国机动车污染防治年报. 中华人民共和国环境保护部. 北京), 2012
[3] Twigg M V. Appl Catal B, 2007, 70: 2
[4] Johnson T. SAE Int J Engines, 2013, 6: 699
[5] Hu C M, Zhao M, Wang H R, Chen S H, Gong M C, Shi Z H, Chen Y Q. Chin J Catal (胡春明, 赵明, 王海蓉, 陈山虎, 龚茂初, 史忠华, 陈耀强. 催化学报), 2008, 29: 677
[6] Yan F W, Xia X K, Zou B, Hou X J. J Wuhan Univ Technol (Information Manag Eng) (颜伏伍, 夏晓坤, 邹斌, 侯献军. 武汉理工大学学报(信息与管理工程版)), 2009, 31: 429
[7] Trade Reports. Committee of Motor Vehicle Pollution Prevention and Control, CAEPI. Beijing (行业综述. 中国环境保护产业协会机动车污染防治委员会. 北京), 2010. 38
[8] Zhang Z Q, Huan Y F, He X K, Zhao Y K. Precious Metals (张振强, 桓源峰, 贺小昆, 赵云昆. 贵金属), 2008, 29: 59
[9] Zhang H P, Liu H C. J Energy Chem, 2013, 22: 98
[10] Sheng Y Q, Zhou Y, Lu H F, Zhang Z K, Chen Y F. Chin J Catal (盛叶琴, 周瑛, 卢晗锋, 张泽凯, 陈银飞. 催化学报), 2013, 34: 567
[11] Daturi M, Finocchio E, Binet C, Lavalley J C, Fally F, Perrichon V, Vidal H, Hickey N, Kaspar J. J Phys Chem B, 2000, 104: 9186
[12] Rainer D R, Koranne M, Vesecky S M, Goodman D W. J Phys Chem B, 1997, 101: 10769
[13] Shang H Y, Wang Y, Gong M C, Chen Y Q. J Nat Gas Chem, 2012, 21: 393
[14] Morikawa A, Suzuki T, Kanazawa T, Kikuta K, Suda A, Shinjo H. Appl Catal B, 2008, 78: 210
[15] Wang B, Wu X D, Ran R, Si Z C, Weng D. Sci Sin Chim (王斌, 吴晓东, 冉锐, 司知蠢, 翁端. 中国科学化学), 2012, 42: 1315
[16] Anatoly B I, Nunan J G. US Patent 6387338. 2002
[17] Wang Q Y, Li G F, Zhao B, Zhou R X. Fuel, 2011, 90: 3047
[18] Cui Y J, He S N, Fang R M, Shi Z H, Gong M C, Chen Y Q. Chin J Catal (崔亚娟, 何胜楠, 方瑞梅, 史忠华, 龚茂初, 陈耀强. 催化学报), 2012, 33: 1020
[19] Nagai Y, Hirabayashi T, Dohmae K, Takagi N, Minami T, Shinjoh H, Matsumoto S. J Catal, 2006, 242: 103
[20] Wang G, You R, Meng M. Fuel, 2013, 103: 799
[21] Fang R M, He S N, Cui Y J, Shi Z H, Gong M C, Chen Y Q. Chin J Catal (方瑞梅, 何胜楠, 崔亚娟, 史忠华, 龚茂初, 陈耀强. 催化学报), 2012, 33: 1014
[22] Wang Q Y, Li G F, Zhao B, Zhou R X. Appl Catal B, 2010, 100: 516
[23] Leofanti G, Padovan M, Tozzola G, Venturell B. Catal Today, 1998, 41: 207
[24] Mattos L V, de Oliveira E R, Resende P D, Noronha F B, Passos F B. Catal Today, 2002, 77: 245
[25] Cai L, Zhao M, Pi Z, Gong M C, Chen Y Q. Chin J Catal (蔡黎, 赵明, 皮展, 龚茂初, 陈耀强. 催化学报), 2008, 29: 108
[26] Mattos L V, Noronha F B. J Power Sources, 2005, 145: 10
[27] Guo J X, Shi Z H, Wu D D, Yin H Q, Gong M C, Chen Y Q. Appl Surf Sci, 2013, 273: 527
[28] Jenog J W, Choi B C. JSME Int J, Ser B, 2002, 45: 392
[29] Huang P, Jiang H X, Zhang M H. J Rare Earths, 2012, 30: 524
[30] Weng X L, Perston B, Wang X Z, Abrahams I, Lin T, Yang S F, Evans J R G, Morgan D J, Carley A F, Bowker M, Knowles J C, Rehman I, Darr J A. Appl Catal B, 2009, 90: 405
[31] Chuang C C, Hsiang H I, Hwang J S, Wang T S. J Alloys Compd, 2009, 470: 387
[32] Fernandes D M, Scofield C F, Neto A A, Cardoso M J B, Zotin F M Z. Chem Eng J, 2010, 160: 85
[33] Zotin F M Z, da Fonseca Martins Gomes O, de Oliveira C H, Neto A A, Cardoso M J B. Catal Today, 2005, 107-108: 157