PM-support interfacial effect and oxygen mobility in Pt, Pd or Rh-loaded (Ce,Zr,La)O₂ catalysts

Abstract

• Pt/CZL exhibits the optimum catalytic performance for HC and NO_x elimination.

• The strong PM-Ce interaction favors the oxygen mobility and DOSC.

• Pd/CZL shows higher catalytic activity for CO conversion due to more O_latt species.

• Great oxygen mobility at high temperature broadens the dynamic operation window.

• The relationship between DOSC and catalytic performance is revealed.

The physicochemical properties of Pt-, Pd- and Rh- loaded (Ce,Zr,La)O₂ (shorted for CZL) catalysts before/after aging treatment were systematically characterized by various techniques to illustrate the relationship of the dynamic oxygen storage/release capacity and redox ability with their catalytic performances for HC, NO_x and CO conversions. Pt/CZL catalyst exhibits the optimum catalytic performance for HC and NO_x elimination, which mainly contribute to its excellent redox ability and dynamic oxygen storage/release capacity (DOSC) at lower temperature due to the stronger PM (precious metals)-support interaction. However, the worse stability of Pt-O-Ce species and volatile Pt oxides easily result in the dramatical decline in catalytic activity after aging. Pd/CZL shows higher catalytic activity for CO conversion by reason of more O_latt species as the active oxygen for CO oxidation reaction. Rh/CZL catalyst displays the widest dynamic operation window for NO_x elimination as a result of greater oxygen mobility at high temperature, and the ability to retain more Rh-O-Ce species after calcined at 1100°C effectively restrains sintering of active RhO_x species, improving the thermal stability of Rh/CZL catalyst.

Graphical abstract

Keywords

Precious metal-loaded (Ce,Zr,La)O ₂ catalysts / Oxygen mobility / Catalytic performance

References

[1] Azambre B, Atribak I, Bueno-Lopez A, Garcia-Garcia A (2010). Probing the surface of Ceria-Zirconia catalysts using NO_x adsorption/desorption: A first step toward the investigation of crystallite heterogeneity. Journal of Physical Chemistry C, 114(31): 13300–13312

[2] Ding Y, Wu Q, Lin B, Guo Y, Guo Y, Wang Y, Wang L, Zhan W (2020). Superior catalytic activity of a Pd catalyst in methane combustion by fine-tuning the phase of Ceria-Zirconia support. Applied Catalysis B: Environmental, 266: 118631–118642

[3] Dong F, Meng Y, Han W, Zhao H, Tang Z (2019). Morphology effects on surface chemical properties and lattice defects of Cu/CeO₂ catalysts applied for low-temperature CO oxidation. Scientific Reports, 9(1): 12056–12070

[4] Farrauto R J, Deeba M, Alerasool S (2019). Gasoline automobile catalysis and its historical journey to cleaner air. Nature Catalysis, 2(7): 603–613

[5] Fornasiero P, Kašpar J, Sergo V, Graziani M (1999). Redox behavior of high-surface-area Rh-, Pt-, and Pd-Loaded Ce_0.5Zr_0.5O₂ mixed oxide. Journal of Catalysis, 182(1): 56–69

[6] Gandhi H S, Graham G W, McCabe R W (2003). Automotive exhaust catalysis. Journal of Catalysis, 241: 273–287

[7] Gatica J, Baker R, Fornasiero P, Bernal S, Blanco G, Kašpar J (2000). Rhodium dispersion in a Rh/Ce_0.68Zr_0.32O₂ catalyst investigated by HR-TEM and H₂ chemisorption. Journal of Physical Chemistry B, 104(19): 4667–4672

[8] Gu Y, Shao S, Sun W, Xia H, Gao X, Dai Q, Zhan W, Wang X (2019). The oxidation of chlorinated organic compounds over W-modified Pt/CeO₂ catalysts. Journal of Catalysis, 380: 375–386

[9] Haneda M, Suzuki K, Sasaki M, Hamada H, Ozawa M (2014). Catalytic performance of bimetallic PtPd/Al₂O₃ for diesel hydrocarbon oxidation and its implementation by acidic additives. Applied Catalysis A, General, 475: 109–115

[10] He H, Dai H X, Ng L H, Wong K W, Au C T (2002). Pd-, Pt-, and Rh-Loaded Ce_0.6Zr_0.35Y_0.05O₂ three-way catalysts: an investigation on performance and redox properties. Journal of Catalysis, 206(1): 1–13

[11] Holmgren A, Andersson B, Duprez D (1999). Interactions of CO with Pt/Ceria catalysts. Applied Catalysis B: Environmental, 22(3): 215–230

[12] Hori C E, Brenner A, Simon Ng K Y, Rahmoeller K M, Belton D (1999). Studies of the oxygen release reaction in the Platinum±Ceria±Zirconia system. Catalysis Today, 50(2): 299–308

[13] Hosokawa S, Taniguchi M, Utani K, Kanai H, Imamura S (2005). Affinity order among noble metals and CeO₂. Applied Catalysis A, General, 289(2): 115–120

[14] Ikryannikova L, Markaryan G, Kharlanov A, Lunina E (2003). Electron-accepting surface properties of Ceria-(Praseodymia)-Zirconia solids modified by Y³⁺ or La³⁺ studied by paramagnetic probe method. Applied Surface Science, 207(1–4): 100–114

[15] Ilayaraja N, Prabu N, Lakshminarasimhan N, Murugan P, Jeyakumar D (2013). Au-Pt graded nano-alloy formation and its manifestation in small organics oxidation reaction. Journal of Materials Chemistry. A, Materials for Energy and Sustainability, 1(12): 4048–4056

[16] Jeong H, Kwon O, Kim B S, Bae J, Shin S, Kim H E, Kim J, Lee H (2020). Highly durable metal ensemble catalysts with full dispersion for automotive applications beyond single-atom catalysts. Nature Catalysis, 3(4): 368–375

[17] Jiang W, Xu B, Xiang Z, Liu X, Liu F (2016). Preparation and reactivity of UV light-reduced Pd/A-Fe₂O₃ catalyst towards the hydrogenation of O^- chloronitrobenzene. Applied Catalysis A, General, 520: 65–72

[18] Jin H, You R, Zhou S, Ma K, Meng M, Zheng L R, Hu T D (2015). In-situ DRIFTS and XANES identification of copper species in the ternary composite oxide catalysts CuMnCeO during CO preferential oxidation. International Journal of Hydrogen Energy, 40: 3919–3931

[19] Li K, Wang X, Zhou Z, Wu X, Weng D (2007). Oxygen storage capacity of Pt-, Pd-, Rh/CeO₂-based oxide catalyst. Journal of Rare Earths, 25(1): 6–10

[20] Li Z H, Geng Y, Ma L, Chen X Y, Li J H, Chang H Z, Schwank J W (2020). Catalytic oxidation of CO over Pt/Fe3O4 catalysts: Tuning O2 activation and CO adsorption. Frontiers of Environmental Science and Engineering, 14(4): 65

[21] Lin W, Zhu Y, Wu N, Xie Y, Murwani I, Kemnitz E (2004). Total oxidation of methane at low temperature over Pd/TiO₂/Al₂O₃: effects of the support and residual chlorine ions. Applied Catalysis B: Environmental, 50(1): 59–66

[22] López J M, Gilbank A L, García T, Solsona B, Agouram S, Torrente-Murciano L (2015). The prevalence of surface oxygen vacancies over the mobility of bulk oxygen in nanostructured ceria for the total toluene oxidation. Applied Catalysis B: Environmental, 174–175: 403–412

[23] Lu Z S, Yang Z X (2010). Interfacial properties of NM/CeO₂ (111) (NM=noble metal atoms or clusters of Pd, Pt and Rh): A first principle study. Journal of Physics Condensed Matter, 22(47): 475003–475012

[24] Luo J, Meng M, Li X, Li X, Zha Y, Hu T, Xie Y, Zhang J (2008). Mesoporous Co₃O₄-CeO₂ and Pd/Co₃O₄-CeO₂ catalysts: Synthesis, characterization and mechanistic study of their catalytic properties for low-temperature CO oxidation. Journal of Catalysis, 254(2): 310–324

[25] Ma J, Lou Y, Cai Y F, Zhao Z Y, Wang L, Zhan W C, Guo Y L, Guo Y (2018). The relationship between the chemical state of Pd species and the catalytic activity for methane combustion on Pd/CeO₂. Catalysis Science & Technology, 8(10): 2567–2577

[26] Martínez-Arias A, Fernández-García M, Hungría A B, Iglesias-Juez A, Duncan K, Smith R, Anderson J A, Conesa J C, Soria J (2001). Effect of thermal sintering on light-off performance of Pd/(Ce,Zr)O_x/Al₂O₃ three-way catalysts: Model gas and engine tests. Journal of Catalysis, 204(1): 238–248

[27] Nagao Y, Nakahara Y, Sato T, Iwakura H, Takeshita S, Minami S, Yoshida H, Machida M (2015). Rh/ZrP₂O₇ as an efficient automotive catalyst for NO_x reduction under slightly lean conditions. ACS Catalysis, 5(3): 1986–1994

[28] Ozawa M, Takahashi-Morita M, Kobayashi K, Haneda M (2017). Core-Shell type Ceria Zirconia support for Platinum and Rhodium three-way catalysts. Catalysis Today, 281: 482–489

[29] Piumetti M, Bensaid S, Russo N, Fino D (2015). Nanostructured Ceria-based catalysts for soot combustion: investigations on the surface sensitivity. Applied Catalysis B: Environmental, 165: 742–751

[30] Shelef M, Graham G W (1994). Why Rhodium in automotive three-way catalysts. Catalysis Reviews, 36(3): 433–457

[31] Song S, Wu Y, Ge S, Wang L, Wang Y, Guo Y, Zhan W, Guo Y (2019). A facile way to improve Pt atom efficiency for CO oxidation at low temperature: modification by transition metal oxides. ACS Catalysis, 9(7): 6177–6187

[32] Wang J Q, Zhang B Y, Shen M Q, Wang J, Wang W L, Ma J, Liu S X, Jia L W (2011). Effects of Fe-doping of ceria-based materials on their microstructural and dynamic oxygen storage and release properties. Journal of Sol-Gel Science and Technology, 58(1): 259–268

[33] Wang Q Y, Li G F, Zhao B, Shen M Q, Zhou R X (2010). The effect of La doping on the structure of Ce_0.2Zr_0.8O₂ and the catalytic performance of its supported Pd-only three-way catalyst. Applied Catalysis B: Environmental, 101(1–2): 150–159

[34] Wang T, Zhou R (2020). Oxygen mobility and microstructure properties-redox performance relationship of Rh/(Ce,Zr,La)O₂ catalyst. Environmental Pollution, 258: 113782–113791

[35] Yang L Y, Yang X, Lin S Y, Zhou R X (2015). Insight into the role of a structural promoter (Ba) in three-way catalyst Pd/CeO₂-ZrO₂ using in situ DRIFTS. Catalysis Science & Technology, 5(5): 2688–2695

[36] Zhao B, Yang C, Wang Q, Li G, Zhou R (2010). Influence of thermal treatment on catalytic performance of Pd/(Ce,Zr)O_x-Al₂O₃ three-way catalysts. Journal of Alloys and Compounds, 494(1–2): 340–346

[37] Zhu H, Qin Z, Shan W, Wang J (2004). Pd/CeO₂-TiO₂ catalyst for CO oxidation at low temperature: A TPR study with H₂ and CO as reducing agents. Journal of Catalysis, 225(2): 267–277

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