Citation: Hongyan Shang, Yun Wang, Yajuan Cui, Ruimei Fang, Wei Hu, Maochu Gong, Yaoqiang Chen. Catalytic performance of Pt-Rh/CeZrYLa+LaAl with stoichiometric natural gas vehicles emissions[J]. Chinese Journal of Catalysis, ;2015, 36(3): 290-298. doi: 10.1016/S1872-2067(14)60270-9 shu

Catalytic performance of Pt-Rh/CeZrYLa+LaAl with stoichiometric natural gas vehicles emissions

Hongyan Shang ^a ,
Yun Wang ^b ,
Yajuan Cui ^c ,
Ruimei Fang ^a ,
Wei Hu ^a ,
Maochu Gong ^d ,
Yaoqiang Chen ^a,c,d,,

1.
a College of Chemical Engineering, Sichuan University, Chengdu 610065, Sichun, China;

Corresponding author: Yaoqiang Chen,
Received Date: 19 October 2014
Available Online: 12 December 2014
Fund Project: 国家自然科学基金(21173153) (21173153) 四川省科技厅科技支撑项目(2011GZ0035). (2011GZ0035)

The composite support CeZrYLa+LaAl was prepared by a co-precipitation method, and Pt-Rh bimetallic catalysts were fabricated on this support using different preparation procedures. The catalytic activities of these materials were tested in a gas mixture simulating the exhaust from a stoichiometric natural gas vehicle. The as-prepared catalysts were also characterized by X-ray photoelectron spectroscopy, X-ray diffraction, N₂ adsorption-desorption and H₂-temperature-programmed reduction. It was found that the order of activities for CH₄, CO and NO conversion was Cat3 ≈ Cat2 > Cat1, where Cat3 had the lowest light-off temperature (T₅₀) for CO (114 ℃) and NO (149 ℃), the lowest complete conversion temperature (T₉₀) for CH₄ (398 ℃) and CO (179 ℃), and the lowest ΔT (T₉₀-T₅₀) for CH₄ (34 ℃) and CO (65 ℃). Cat2 showed the lowest T₅₀ for CH₄ (342 ℃), the lowest T₉₀ for NO (174 ℃), and the lowest ΔT for NO (17 ℃). Cat1 had the highest T₅₀ and T₉₀ and the largest ΔT out of all three catalysts. Indicating that Pt-Rh bimetallic catalysts (Cat2 and Cat3) prepared by physically mixing Pt and Rh powders exhibited much better catalytic activity than those (Cat1) prepared by co-impregnation, since homogeneous Pt and Rh sites made a significant contribution to CH₄/CO/NO conversions. In contrast, strong Pt-Rh interactions in the co-impregnation materials affected the oxidation states of Pt, and the Pt-enriched surface blocked active Rh sites. Moreover, Cat3 was prepared by adding additives (La³⁺, Zr⁴⁺ and Ba²⁺) into the physically mixed Pt-Rh catalysts. XRD results demonstrated that the additive cation (Zr⁴⁺) was incorporated into the CeO₂-ZrO₂ lattice, thus creating a higher concentration of defects and improving the O₂-mobility. XPS results showed that the Cat3 had the highest Ce³⁺/Ce ratio, suggesting the presence of a significant quantity of oxygen vacancies and cerium in the Ce³⁺ state. All of these further promoted the three-way catalytic activity and widened the air-to-fuel working-window.
- Platium-rhodium,
- Nanocomposite CeZrYLa+LaAl,
- La-Zr-Ba additive,
- Stoichiometric natural gas vehicle,
- Exhaust purification
1. [1]
  [1] Bounechada D, Groppi G, Forzatti P, Kallinen K, Kinnunen T. Appl Catal B, 2012, 119-120: 91
2. [2]
  [2] Choudhary T V, Banerjee S, Choudhary V R. Appl Catal A, 2002, 234: 1
3. [3]
  [3] Tabata T, Baba K, Kawshima H, Kitade K, Tanaka T, Kokitsu M, Otsuka H, Okada O. Sci Tech Catal, 1995, 92: 453
4. [4]
  [4] Klingstedt F, Neyestanaki A K, Byggningsbacka R, Lindfors L E, Lundén M, Petersson M, Tengström P, Ollonqvist T, Väyrynen J. Appl Catal A, 2001, 209: 301
5. [5]
  [5] Guo J X, Wu D D, Zhang L, Gong M C, Zhao M, Chen Y Q. J Alloy Compd, 2008, 460: 485
6. [6]
  [6] Wang S N, Cui Y J, Lan L, Shi Z H, Zhao M, Gong M C, Fang R M, Chen S J, Chen Y Q. Chin J Catal (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. 催化学报), 2014, 35: 1482
7. [7]
  [7] Guo J X G, Shi Z H, Wu D D, Yin H Q, Gong M C, Chen Y Q. Appl Surf Sci, 2013, 273: 527
8. [8]
  [8] Oh S H, Mitchell P J, Siewert R M. J Catal, 1991, 132: 287
9. [9]
  [9] Burch R, Loader P K. Appl Catal B, 1994, 5: 149
10. [10]
  [10] Hu Z, Allen F M, Wan C Z, Heck R M, Steger J J, Lakis R E, Lyman C E. J Catal, 1998, 174: 13
11. [11]
  [11] Fang R M, Cui Y J, Chen S J, Shang H Y, Shi Z H, Gong M C, Chen Y Q. Chin J Catal (方瑞梅, 崔亚娟, 陈思洁, 尚鸿燕, 史忠华, 龚茂初, 陈耀强. 催化学报), 2015, 36: 229
12. [12]
  [12] Wang Y, Shang H Y, Xu H D, Gong M C, Chen Y Q. Chin J Catal (王云, 尚鸿燕, 徐海迪, 龚茂初, 陈耀强. 催化学报), 2014, 35: 1157
13. [13]
  [13] Wang Y, Xu H D, Shang H Y, Gong M C, Chen Y Q. J Energy Chem, 2014, 23: 461
14. [14]
  [14] Zhang X Y, Long E Y, Li Y L, Zhang L J, Guo J X, Gong M C, Chen Y Q. J Mol Catal A, 2009, 308: 73
15. [15]
  [15] Li Y L, Zhang X Y, Long E Y, Li H M, Wu D D, Cai L, Gong M C, Chen Y Q. J Nat Gas Chem, 2009, 18: 415
16. [16]
  [16] Yuan S H, Wang Y J, Shi Z H, Zhao M, Gong M C, Liu Z C, Chen Q Z, Chen Y Q. Chin J Catal (袁书华, 王永军, 史忠华, 赵明, 龚茂初, 刘忠长, 陈启章, 陈耀强. 催化学报), 2007, 28: 401
17. [17]
  [17] Granger P, Lecomte J J, Dathy C, Leclercq L, Leclercq G. J Catal, 1998, 175: 194
18. [18]
  [18] Koltsakis G C, Stamatelos A M. Prog Energy Combust Sci, 1997, 23: 1
19. [19]
  [19] Papavasiliou A, Tsetsekou A, Matsouka V, Konsolakis M, Yentekakis I V. Appl Catal A, 2010, 382: 73
20. [20]
  [20] Wan J, Ran R, Li M, Wu X D, Weng D. J Mol Catal A, 2014, 383-384: 194
21. [21]
  [21] Vlaic G, Di Monte R, Fornasiero P, Fonda E, Kašpar J, Graziani M. J Catal, 1999, 182: 378
22. [22]
  [22] Bozo C, Gaillard F, Guilhaume N. Appl Catal A, 2001, 220: 69
23. [23]
  [23] Wang J, Wen J, Shen M Q. J Phys Chem C, 2008, 112: 5113
24. [24]
  [24] Wu X D, Fan J, Ran R, Weng D. Chem Eng J, 2005, 109: 133
25. [25]
  [25] Rodriguez J A, Wang X, Liu G, Hanson J C, Hrbek J, Peden C H F, Iglesias-Juez A, Fernández-García M. J Mol Catal A, 2005, 228: 11
26. [26]
  [26] Trovarelli A, Zamar F, Llorca J, de Leitenburg C, Dolcetti G, Kiss J T. J Catal, 1997, 169: 490
27. [27]
  [27] He H, Dai H X, Au C T. Catal Today, 2004, 90: 245
28. [28]
  [28] Xu H D, Zhang Q L, Qiu C T, Lin T, Gong M C, Chen Y Q. Chem Eng Sci, 2012, 76: 120
29. [29]
  [29] Xu H D, Qiu C T, Zhang Q L, Lin T, Gong M C, Chen Y Q. Acta Phys-Chim Sin (徐海迪, 邱春天, 张秋林, 林涛, 龚茂初, 陈耀强. 物理化学学报), 2010, 26: 2449
30. [30]
  [30] Kašpar J, Fornasiero P, Graziani M. Catal Today, 1999, 50: 285
31. [31]
  [31] Ayastuy J L, González-Marcos M P, Gil-Rodríguez A, González- Velasco J R, Gutiérrez-Ortiz M A. Catal Today, 2006, 116: 391
32. [32]
  [32] Passos F B, de Oliveira E R, Mattos L V, Noronha F B. Catal Today, 2005, 101: 23
33. [33]
  [33] Fally F, Perrichon V, Vidal H, Kaspar J, Blanco G, Pintado J M, Bernal S, Colon G, Daturi M, Lavalley J N C. Catal Today, 2000, 59: 373
34. [34]
  [34] Dou D, Liu D J, Williamson W B, Kharas K C, Robota H J. Appl Catal B, 2001, 30: 11
35. [35]
  [35] Samoila P, Boutzeloit M, Especel C, Epron F, Marécot P. J Catal, 2010, 276: 237
36. [36]
  [36] Fornasiero P, Ranga Rao G, Kaˇspar J, L'Erario F, Graziani M. J Catal, 1998, 175: 269
37. [37]
  [37] Shang H Y, Wang Y, Gong M C, Chen Y Q. J Nat Gas Chem, 2012, 21: 393
38. [38]
  [38] Sekizawa K, Widjaja H, Maeda S, Ozawa Y, Eguchi K. Catal Today, 2000, 59: 69
1. [1]
  Chunmei GUO , Weihan YIN , Jingyi SHI , Jianhang ZHAO , Ying CHEN , Quli FAN . Facile construction and peroxidase-like activity of single-atom platinum nanozyme. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1633-1639. doi: 10.11862/CJIC.20240162
2. [2]
  Yueyue DU , Yuwei ZHENG , Xuanhe WEI , Yifan LU , Yingchao HAN . Sodium alginate/nano lanthanum hydroxide composite microspheres: Electrospraying preparation and phosphorus adsorption performance. Chinese Journal of Inorganic Chemistry, 2026, 42(8): 1669-1684. doi: 10.11862/CJIC.20260002
3. [3]
  Shiyang He , Dandan Chu , Zhixin Pang , Yuhang Du , Jiayi Wang , Yuhong Chen , Yumeng Su , Jianhua Qin , Xiangrong Pan , Zhan Zhou , Jingguo Li , Lufang Ma , Chaoliang Tan . Pt Single-Atom-Functionalized 2D Al-TCPP MOF Nanosheets for Enhanced Photodynamic Antimicrobial Therapy. Acta Physico-Chimica Sinica, 2025, 41(5): 100046-0. doi: 10.1016/j.actphy.2025.100046
4. [4]
  Liuqing Yang , Pengyu Chen , Yuhan Yang , Liguo Ye , Qiaochu Yang , Xiaofei Yang . 木材的“神奇变身术”——净化滤水器. University Chemistry, 2026, 41(5): 412-421. doi: 10.12461/PKU.DXHX202510063
5. [5]
  Bin Liu . Teaching case design of chemistry “101 Plan” syntheticchemistry experiment course: taking the experiment of preparation of platinum nanocatalyst supported on carbon and determination of its electrochemical catalytic performance of methanol oxidation as an example. University Chemistry, 2026, 41(6): 125-135. doi: 10.12461/PKU.DXHX202506043
6. [6]
  Kai Hu , Haiyan Liu , Chi Huang , Faqiong Zhao , Yanping Ren , Xiuyun Wang , Juanjuan Song , Yongxian Fan , Dongcheng Liu , Xiuqiong Zeng , Wan Li , Wenwei Zhang , Mei Shi , Min Hu , Weihong Li , Xiaohang Qiu , Yong Fan , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications for Gas Generation, Purification, and Collection. University Chemistry, 2026, 41(3): 99-109. doi: 10.12461/PKU.DXHX202507038
7. [7]
  Lizhu SUN , Jinyun WANG , Zhongning CHEN , Ping DUAN , Qianchong ZHANG . Modulation of charge transport in platinum(Ⅱ) bis(acetylide) complexes by coordination configuration. Chinese Journal of Inorganic Chemistry, 2026, 42(11): 2381-2388. doi: 10.11862/CJIC.20260207
8. [8]
  Zisu Fang , Shida Hou , Yuxuan Gong , Jing Yan , Rui Bian , Dingwen Wang , Yi Yan . Defending the Zirconium Kingdom: An Elemental Adventure. University Chemistry, 2026, 41(2): 323-327. doi: 10.12461/PKU.DXHX202503071
9. [9]
  Hongpeng He , Mengmeng Zhang , Mengjiao Hao , Wei Du , Haibing Xia . Synthesis of Different Aspect-Ratios of Fixed Width Gold Nanorods. Acta Physico-Chimica Sinica, 2024, 40(5): 2304043-0. doi: 10.3866/PKU.WHXB202304043
10. [10]
  Qianqian Zhong , Yucui Hao , Guotao Yu , Lijuan Zhao , Jingfu Wang , Jian Liu , Xiaohua Ren . Comprehensive Experimental Design for the Preparation of the Magnetic Adsorbent Based on Enteromorpha Prolifera and Its Utilization in the Purification of Heavy Metal Ions Wastewater. University Chemistry, 2024, 39(8): 184-190. doi: 10.3866/PKU.DXHX202312013
11. [11]
  Xiaoxuan Yu , Wukun Liu . Practice of Ideological and Political Education in Medicinal Chemistry for Pharmacy Administration Major: A Case Study on the Discovery of Cisplatin’s Anticancer Function. University Chemistry, 2025, 40(4): 408-414. doi: 10.12461/PKU.DXHX202405200
12. [12]
  Zeyu Liu , Wenze Huang , Yang Xiao , Jundong Zhang , Weijin Kong , Peng Wu , Chenzi Zhao , Aibing Chen , Qiang Zhang . Nanocomposite Current Collectors for Anode-Free All-Solid-State Lithium Batteries. Acta Physico-Chimica Sinica, 2024, 40(3): 2305040-0. doi: 10.3866/PKU.WHXB202305040
13. [13]
  Songrui Li , Qiong Jia , Haijiao Zheng , Yaming Zhao , Yu Peng . 铜纳米簇复合材料用于农残荧光检测综合实验. University Chemistry, 2026, 41(10): 249-257. doi: 10.12461/PKU.DXHX202509119
14. [14]
  Zhanglin Shi , Tao Xiu , Xinmeng Mao , Jianfeng Wu , Baoliang Zhang . Controllable construction and microwave absorption properties of TCF/Co@NC composite nanofibers. Acta Physico-Chimica Sinica, 2026, 42(11): 100306-0. doi: 10.1016/j.actphy.2026.100306
15. [15]
  Jiao CHEN , Yi LI , Yi XIE , Dandan DIAO , Qiang XIAO . Vapor-phase transport of MFI nanosheets for the fabrication of ultrathin b-axis oriented zeolite membranes. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 507-514. doi: 10.11862/CJIC.20230403
16. [16]
  Ke Qiu , Fengmei Wang , Mochou Liao , Kerun Zhu , Jiawei Chen , Wei Zhang , Yongyao Xia , Xiaoli Dong , Fei Wang . A Fumed SiO₂-based Composite Hydrogel Polymer Electrolyte for Near-Neutral Zinc-Air Batteries. Acta Physico-Chimica Sinica, 2024, 40(3): 2304036-0. doi: 10.3866/PKU.WHXB202304036
17. [17]
  Haihua Yang , Minjie Zhou , Binhong He , Wenyuan Xu , Bing Chen , Enxiang Liang . Synthesis and Electrocatalytic Performance of Iron Phosphide@Carbon Nanotubes as Cathode Material for Zinc-Air Battery: a Comprehensive Undergraduate Chemical Experiment. University Chemistry, 2024, 39(10): 426-432. doi: 10.12461/PKU.DXHX202405100
18. [18]
  Xue Xiao , Jiachun Li , Xiangtong Meng , Jieshan Qiu . Sulfur-Doped Carbon-Coated Fe_0.95S_1.05 Nanospheres as Anodes for High-Performance Sodium Storage. Acta Physico-Chimica Sinica, 2024, 40(6): 2307006-0. doi: 10.3866/PKU.WHXB202307006
19. [19]
  Zifeng LIN , Shanshan GONG , Yang SHA , Zhenmin ZHANG , Changlin YU . Graphene quantum dots/SnS₂ composite nanosheets: Preparation and photocatalytic performance in reducing Cr(Ⅵ). Chinese Journal of Inorganic Chemistry, 2026, 42(5): 959-968. doi: 10.11862/CJIC.20250320
20. [20]
  Shuai Bi , Xixi Wang , Wei Zhai , Zhenyu Shi , Zijian Li , Li Zhai , An Zhang , Yuhui Tian , Ting Cheng , Yao Yao , Zhiying Wu , Jiawei Liu , Hua Zhang . Phase engineering of nanomaterials: from fundamentals to application frontiers. Acta Physico-Chimica Sinica, 2026, 42(3): 100188-0. doi: 10.1016/j.actphy.2025.100188

Get Citation

PDF

XML

Metrics

PDF Downloads(211)
Abstract views(1708)
HTML views(164)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142