Comparison of Automotive Exhaust Purification Performance of Monolith Catalysts Pd/La2O3-Al2O3 and Pd/CeO2-ZrO2-Y2O3

doi:10.3724/SP.J.1088.2012.11237

Abstract

Abstract: Two kinds of support materials, the thermal-stability material La₂O₃-Al₂O₃(LA) and oxygen storage material CeO₂-ZrO₂-Y₂O₃ (CZY), were prepared by co-precipitation. Pd/LA and Pd/CZY catalysts were prepared by impregnation and they were further fabricated as three-way catalysts in a monolith form. The Pd/LA and Pd/CZY three-way catalysts thus prepared were evaluated with a simulated automobile exhaust in terms of the relationships of three way performance with the air-to-fuel ratio (A/F) window and with temperatures. The results indicated that the A/F window and the three-way activity of the Pd/CZY catalyst were broader and higher than those of the Pd/LA catalyst. To investigate in more details, several reactions that involved CO in exhaust purification process such as CO oxidation, water-gas shift (WGS) reaction, and NO reduction by CO were examined over Pd/LA and Pd/CZY catalysts. These preliminary studies revealed that the advantages of the Pd/CZY catalyst is mainly from the unique properties of the CeO₂ oxygen storage material. Furthermore, it was found that addition of either O₂ or NO in reactant gases are favorable for the WGS reaction, which gives some clues for developing an advanced three-way purification process.

Key words: oxygen storage material, thermal-stability material, three-way catalyst, water-gas shift, carbon monoxide, oxidization, nitrogen oxide

CUI Ya-Juan, HE Sheng-Nan, FANG Rui-Mei, SHI Zhong-Hua, GONG Mao-Chu, CHEN Yao-Qiang. Comparison of Automotive Exhaust Purification Performance of Monolith Catalysts Pd/La₂O₃-Al₂O₃ and Pd/CeO₂-ZrO₂-Y₂O₃[J]. Chinese Journal of Catalysis, 2012, 33(6): 1020-1026.

×
share this article

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.cjcatal.com/EN/10.3724/SP.J.1088.2012.11237

https://www.cjcatal.com/EN/Y2012/V33/I6/1020

References

1 Lundie D T, McInroy A R, Marshall R, Winfield J M, Jones P, Dudman C C, Parker S F, Mitchell C, Lennon D. J Phys Chem B, 2005, 109: 11592
2 龚茂初, 文梅, 高士杰, 章洁, 林之恩, 羊彦衡, 陈耀强, 许清淮, 李孝维, 郑林. 催化学报 (Gong M Ch, Wen M, Gao Sh J, Zhang J, Lin Zh E, Yang Y H, Chen Y Q, Xu Q H, Li X W, Zheng L. Chin J Catal), 2000, 21: 404
3 龚茂初, 文梅, 高士杰, 章洁, 陈耀强, 羊彦衡, 潘桂黄. 天然气化工 (Gong M Ch, Wen M, Gao Sh J, Zhang J, Chen Y Q, Yang Y H, Pan G H. Natur Gas Chem Ind), 2000, 25(1): 26
4 龚茂初, 林之恩, 高士杰, 章洁, 文梅, 陈耀强, 郑林, 许清淮, 李孝维. 燃料化学学报 (Gong M Ch, Lin Zh E, Gao Sh J, Zhang J, Wen M, Chen Y Q, Zheng L, Xu Q H, Li X W. J Fuel Chem Technol), 2001, 29: 76
5 Wu X D, Yang B, Weng D. J Alloys Compd, 2004, 376: 241
6 Ozawa M, Nishio Y. J Alloys Compd, 2004, 374: 397
7 Nagai Y, Yamamoto T, Tanaka T, Yoshida S, Nonaka T, Okamoto T, Suda A, Sugiura M. Catal Today, 2002, 74: 225
8 Bedrane S, Descorme C, Duprez D. Catal Today, 2002,75: 401
9 Kenevey K, Valdivieso F, Soustelle M, Pijolat M. Appl Catal B, 2001, 29: 93
10 Chen L F, González G, Wang J A, Noreña L E, Toledo A, Castillo S, Morán-Pineda M. Appl Surf Sci, 2005, 243: 319
11 汪文栋, 林培琰, 孟明, 胡天斗, 谢亚宁, 刘涛. 中国稀土学报 (Wang W D, Lin P Y, Meng M, Hu T D, Xie Y N, Liu T. J Chin Rare Earth Soc), 2002, 20: 265
12 He H, Dai H X, Wong K W. Appl Catal A, 2003, 251: 61
13 Bekyarova E, Fornasiero P, Kaspar J, Graziani M. Catal Today, 1998, 45: 179
14 Hu Z, Wan C Z, Lui Y K, Dettling J, Steger J J. Catal Today, 1996, 30: 83
15 Sadi F, Duprez D, Gerard F, Miloudi A. J Catal, 2003, 213: 226
16 Liu Z Q, Anderson J A. J Catal, 2004, 224: 18
17 Jacobs G, Chenu E, Patterson P M, Willioms L, Sparks D, Thomas G, Davis B H. Appl Catal A, 2004, 258: 203
18 Jacobs G, Crawford A, Williams L, Patterson P M, Davis B H. Appl Catal A, 2004, 267: 27
19 Hilaire S, Wang X, Luo T, Gorte R J, Wagner J. Appl Catal A, 2001, 215: 271
20 Chan S H, Zhu J. J Inst Energy, 1996, 69: 144

[1]	Haifeng Liu, Xiang Huang, Jiazang Chen. Surface electronic state modulation promotes photoinduced aggregation and oxidation of trace CO for lossless purification of H₂ stream [J]. Chinese Journal of Catalysis, 2023, 51(8): 49-54.
[2]	Si-Na Qin, Di-Ye Wei, Jie Wei, Jia-Sheng Lin, Qing-Qi Chen, Yuan-Fei Wu, Huai-Zhou Jin, Hua Zhang, Jian-Feng Li. Direct identification of the carbonate intermediate during water-gas shift reaction at Pt-NiO interfaces using surface-enhanced Raman spectroscopy [J]. Chinese Journal of Catalysis, 2022, 43(8): 2010-2016.
[3]	Longfu Wei, Changlin Yu, Kai Yang, Qizhe Fan, Hongbing Ji. Recent advances in VOCs and CO removal via photothermal synergistic catalysis [J]. Chinese Journal of Catalysis, 2021, 42(7): 1078-1095.
[4]	Jing Li, Xiang Sun, Yongzheng Duan, Dongmei Jia, Yuejin Li, Jianguo Wang. Enhanced oxygen reduction reaction performance over Pd catalysts by oxygen-surface-modified SiC [J]. Chinese Journal of Catalysis, 2021, 42(6): 963-970.
[5]	Minglun Cheng, Xiongfei Zhang, Yong Zhu, Mei Wang. Selective photocatalytic reduction of CO₂ to CO mediated by a [FeFe]-hydrogenase model with a 1,2-phenylene S-to-S bridge [J]. Chinese Journal of Catalysis, 2021, 42(2): 310-319.
[6]	Jiahua Zhao, Yuan Shu, Pengfei Zhang. Solid-state CTAB-assisted synthesis of mesoporous Fe₃O₄ and Au@Fe₃O₄ by mechanochemistry [J]. Chinese Journal of Catalysis, 2019, 40(7): 1078-1084.
[7]	Yiyang Zhang, Hui Zeng, Bin Jia, Zhihua Wang, Zhiming Liu. Selective catalytic reduction of NO_x by H₂ over Pd/TiO₂ catalyst [J]. Chinese Journal of Catalysis, 2019, 40(6): 849-855.
[8]	Xiaoshan Zhang, Ning Rui, Xinyu Jia, Xue Hu, Chang-jun Liu. Effect of decomposition of catalyst precursor on Ni/CeO₂ activity for CO methanation [J]. Chinese Journal of Catalysis, 2019, 40(4): 495-503.
[9]	Bing Han, Rui Lang, Hailian Tang, Jia Xu, Xiang-Kui Gu, Botao Qiao, Jingyue(Jimmy) Liu. Superior activity of Rh₁/ZnO single-atom catalyst for CO oxidation [J]. Chinese Journal of Catalysis, 2019, 40(12): 1847-1853.
[10]	Yuan Tan, Hua Liu, Xiao Yan Liu, Aiqin Wang, Changjun Liu, Tao Zhang. Effective removal of the protective ligands from Au nanoclusters by ambient pressure nonthermal plasma treatment for CO oxidation [J]. Chinese Journal of Catalysis, 2018, 39(5): 929-936.
[11]	Xiaoxia Dai, Weiyu Jiang, Wanglong Wang, Xiaole Weng, Yuan Shang, Yehui Xue, Zhongbiao Wu. Supercritical water syntheses of transition metal-doped CeO₂nano-catalysts for selective catalytic reduction of NO by CO: An in situ diffuse reflectance Fourier transform infrared spectroscopy study [J]. Chinese Journal of Catalysis, 2018, 39(4): 728-735.
[12]	Liangfeng Chen, Zhuo Wang, Peng Kang. Efficient photoelectrocatalytic CO₂ reduction by cobalt complexes at silicon electrode [J]. Chinese Journal of Catalysis, 2018, 39(3): 413-420.
[13]	Maria Flytzani-Stephanopoulos. Supported metal catalysts at the single-atom limit-A viewpoint [J]. Chinese Journal of Catalysis, 2017, 38(9): 1432-1442.
[14]	Jia Xu, Yian Song, Honglu Wu, Jingyue Liu. Probing the catalytic behavior of ZnO nanowire supported Pd₁ single-atom catalyst for selected reactions [J]. Chinese Journal of Catalysis, 2017, 38(9): 1549-1557.
[15]	Xiao-Na Li, Xiu-Ping Zou, Sheng-Gui He. Metal-mediated catalysis in the gas phase:A review [J]. Chinese Journal of Catalysis, 2017, 38(9): 1515-1527.

Comparison of Automotive Exhaust Purification Performance of Monolith Catalysts Pd/La₂O₃-Al₂O₃ and Pd/CeO₂-ZrO₂-Y₂O₃

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

share this article

References

Related Articles 15

Recommended Articles

Metrics