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Enhanced High Temperature Performance of MgAl2O4-Supported Pt–BaO Lean NOx Trap Catalysts

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Abstract

The structural and chemical characteristics of Pt/BaO lean NOx trap (LNT) catalysts supported on γ-Al2O3 and MgAl2O4 are compared in this study. The Pt–BaO/MgAl2O4 sample shows relatively low NOx uptake at temperatures below 300 °C, and the temperature of maximum NOx uptake (Tmax) is shifted to 350 °C in comparison to that of Pt–BaO/Al2O3 (Tmax ~ 250 °C). More importantly, the NOx uptake over the MgAl2O4-supported catalyst at 350 °C is twice that of the alumina-based one. The shift toward the higher temperature NOx uptake is explained by the larger interfacial area between Pt and BaO, due to smaller Pt clusters as evidenced by TEM and Pt L3 EXAFS. In situ TR-XRD results demonstrate that the formation of a BaAl2O4 phase in the BaO/MgAl2O4 LNT catalyst occurs at a temperature about 100 °C higher than on BaO/Al2O3, which may also represent a beneficial attribute of the BaO/MgAl2O4 LNT with respect to catalyst stability.

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References

  1. Roy S, Baiker A (2009) Chem Rev 109:4054–4091

    Article  CAS  Google Scholar 

  2. Liu ZM, Woo SI (2006) Catal Rev Sci Eng 48:43–89

    Article  CAS  Google Scholar 

  3. Szanyi J, Kwak JH, Kim DH, Burton SD, Peden CHF (2005) J Phys Chem B 109:27–29

    Article  CAS  Google Scholar 

  4. Nova I, Lietti L, Castoldi L, Tronconi E, Forzatti P (2006) J Catal 239:244–254

    Article  CAS  Google Scholar 

  5. Cant NW, Liu IOY, Patterson MJ (2006) J Catal 243:309–317

    Article  CAS  Google Scholar 

  6. Kim DH, Chin YH, Muntean GG, Yezeretz A, Currier NW, Epling WS, Chen HY, Hess H, Peden CHF (2006) Ind Eng Chem Res 45:8815–8821

    Article  CAS  Google Scholar 

  7. Smeltz AD, Delgass WN, Ribeiro FH (2010) Langmuir 26:16578–16588

    Article  CAS  Google Scholar 

  8. Olsson L, Fridell E (2002) J Catal 210:340–353

    Article  CAS  Google Scholar 

  9. Kwak JH, Kim DH, Szailer T, Peden CHF, Szanyi J (2006) Catal Lett 111:119–126

    Article  CAS  Google Scholar 

  10. Xu J, Harold MP, Balakotaiah V (2011) Appl Catal B Environ 104:305–315

    Article  CAS  Google Scholar 

  11. Trifiro F, Vaccari A, Clause O (1994) Catal Today 21:185–195

    Article  CAS  Google Scholar 

  12. Diez VK, Apesteguia CR, Di Cosimo JI (2003) J Catal 215:220–233

    Article  CAS  Google Scholar 

  13. Abello S, Medina F, Tichit D, Perez-Ramirez J, Sueiras JE, Salagre P, Cesteros Y (2007) Appl Catal B Environ 70:577–584

    Article  CAS  Google Scholar 

  14. Fornasari G, Glockler R, Livi M, Vaccari A (2005) Appl Clay Sci 29:258–266

    Article  CAS  Google Scholar 

  15. Roy S, van Vegten N, Baiker A (2010) J Catal 271:125–131

    Article  CAS  Google Scholar 

  16. Takahashi N, Matsunaga S, Tanaka T, Sobukawa H, Shinjoh H (2007) Appl Catal B Environ 77:73–78

    Article  CAS  Google Scholar 

  17. Kim DH, Kwak JH, Szanyi J, Burton SD, Peden CHF (2007) Appl Catal B Environ 72:233–239

    Article  CAS  Google Scholar 

  18. Niwa M, Katada N, Okumura K (2010) Springer Ser Mater Sci 141:121–122

    Google Scholar 

  19. Eberhardt M, Riedel R, Gobel U, Theis J, Lox ES (2004) Top Catal 30–31:135–142

    Article  Google Scholar 

  20. Elbouazzaoui S, Courtois X, Marecot P, Duprez D (2004) Top Catal 30–31:493–496

    Article  Google Scholar 

  21. Olsson L, Persson H, Fridell E, Skoglundh M, Andersson B (2001) J Phys Chem B 105:6895–6906

    Article  CAS  Google Scholar 

  22. Clayton RD, Harold MP, Balakotaiah V, Wan CZ (2009) Appl Catal B Environ 90:662–676

    Article  CAS  Google Scholar 

  23. Cumaranatunge L, Mulla SS, Yezerets A, Currier NW, Delgass WN, Ribeiro FH (2007) J Catal 246:29–34

    Article  CAS  Google Scholar 

  24. Mulla SS, Chaugule SS, Yezerets A, Currier NW, Delgass WN, Ribeiro FH (2008) Catal Today 136:136–145

    Article  CAS  Google Scholar 

Download references

Acknowledgments

Financial support was provided by the U.S. Department of Energy (DOE), Office of Freedom Car and Vehicle Technologies. The authors thank Dr. Chongmin Wang for obtaining the TEM images. The work was performed in the Environmental Molecular Sciences Laboratory (EMSL) at the Pacific Northwest National Laboratory (PNNL). The EMSL is a national scientific user facility and supported by the U.S. DOE’s Office of Biological and Environmental Research. PNNL is a multi-program national laboratory operated for the U.S. Department of Energy by Battelle Memorial Institute under Contract DE-AC06-76RLO 1830.

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Authors and Affiliations

  1. Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA, 99354, USA

    Ja Hun Kwak, Do Heui Kim, János Szanyi & Charles H. F. Peden

  2. School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, Seoul, 151-742, Republic of Korea

    Do Heui Kim

  3. Department of Applied Chemical Engineering, Center for Functional Nano Fine Chemicals (BK21 Program), Chonnam National University, Gwangju, 500-757, Republic of Korea

    Sung June Cho

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  1. Ja Hun Kwak
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  2. Do Heui Kim
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  3. János Szanyi
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  5. Charles H. F. Peden
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Correspondence to Do Heui Kim.

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Kwak, J.H., Kim, D.H., Szanyi, J. et al. Enhanced High Temperature Performance of MgAl2O4-Supported Pt–BaO Lean NOx Trap Catalysts. Top Catal 55, 70–77 (2012). https://doi.org/10.1007/s11244-012-9779-1

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  • DOI: https://doi.org/10.1007/s11244-012-9779-1

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