Catalysis Letters

, Volume 119, Issue 1–2, pp 134–141 | Cite as

Pt-Al2O3 Cryogel with High Thermal Stability for Catalytic Combustion

  • Toshihiko Osaki
  • Kiho Nagashima
  • Koji Watari
  • Koji Tajiri


The cryogel catalyst of platinum on alumina was prepared from aluminum sec-butoxide and H2PtCl6 through the sol-gel technique and subsequent freeze drying. The cryogel catalyst showed higher thermal stability of platinum than the corresponding xerogel or impregnation catalysts, which was ascribed to the more intimately developed platinum-alumina interaction accompanied by the encapsulation of the metal into the alumina cryogel. It was also shown that platinum accessibility was higher on the cryogel than on the xerogel despite the higher thermal stability of the metal on the formed than on the latter. For the VOC combustion, the cryogel exhibited higher activity than the xerogel and impregnation catalysts. Also for the methane combustion the cryogel showed higher activity, although it showed lower activity than the impregnation catalysts above 600 °C. By the addition of ceria as an additive to the cryogel catalyst, the CH4 combustion activity was improved especially in the temperature region above 600 °C.


Cryogel Sol-gel Freeze drying Platinum Alumina Catalytic combustion Thermal stability Dispersion VOC Methane 


  1. 1.
    Ishikawa A, Komai S, Satsuma A, Hattori T, Murakami Y (1994) Appl Catal A-Gen 110:61CrossRefGoogle Scholar
  2. 2.
    Cho IH, Park SB, Cho SJ, Ryoo R (1998) J Catal 173:295CrossRefGoogle Scholar
  3. 3.
    Dolev A, Shter GE, Grader GS (2003) J Catal 214:146CrossRefGoogle Scholar
  4. 4.
    Castillo S, Moran-Pineda M, Molina V, Gomez R, Lopez T (1998) Appl Catal B-Environ 15:203CrossRefGoogle Scholar
  5. 5.
    Manasilp A, Gulari E (2002) Appl Catal B-Environ 37:17CrossRefGoogle Scholar
  6. 6.
    Mizushima Y, Hori M (1992) Appl Catal A-Gen 88:137CrossRefGoogle Scholar
  7. 7.
    Balakrishnan K, Gonzalez RD (1993) J Catal 144:395CrossRefGoogle Scholar
  8. 8.
    Courtheoux L, Popa F, Gautron E, Rossignol S, Kappenstein C (2004) J Non-Cryst Solids 350:113CrossRefGoogle Scholar
  9. 9.
    Popa AF, Courtheoux L, Gautron E, Rossignol S, Kappenstein C, Euro J Inorg Chem (2005) 543Google Scholar
  10. 10.
    Sault AG, Martino A, Kawola JS, Boespflug E (2000) J Catal 191:474CrossRefGoogle Scholar
  11. 11.
    Pajonk GM (1997) Catal Today 35:319CrossRefGoogle Scholar
  12. 12.
    Osaki T, Nagashima K, Watari K, Tajiri K (2007) J Non-Cryst Solids 353:2436CrossRefGoogle Scholar
  13. 13.
    Kirchnerova J, Klvana D, Chaouki J (2000) Appl Catal A-Gen 196:191CrossRefGoogle Scholar
  14. 14.
    Prasad R, Kennedy LA, Ruckenstein E (1984) Catal Rev-Sci Eng 26:1CrossRefGoogle Scholar
  15. 15.
    Lieske H, Lietz G, Spindler H, Volter J (1983) J Catal 81:8CrossRefGoogle Scholar
  16. 16.
    Lopez T, Romero A, Gomez R (1991) J Non-Cryst Solids 127:105CrossRefGoogle Scholar
  17. 17.
    Bosch P, Lopez T, Lara VH, Gomez R (1993) J Mol Catal 80:299CrossRefGoogle Scholar
  18. 18.
    Azomoza M, Lopez T, Gomez R, Gonzalez RD (1992) Catal Today 15:547CrossRefGoogle Scholar
  19. 19.
    Lopez T, Bosch P, Moran M, Gomez R (1993) J Phys Chem 97:1671CrossRefGoogle Scholar
  20. 20.
    Schneider M, Duff DG, Mallat T, Wildberger M, Baiker A (1994) J Catal 147:500CrossRefGoogle Scholar
  21. 21.
    Anderson JR (1975) Structure of metallic catalysts. Academic Press, London p 359Google Scholar
  22. 22.
    Anderson JR (1975) Structure of metallic catalysts. Academic Press, London p 296Google Scholar
  23. 23.
    Yazawa Y, Yoshida H, Hattori T (2002) Appl Catal A-Gen 237:139CrossRefGoogle Scholar
  24. 24.
    Matsuhashi H, Nishiyama S, Miura H, Eguchi K, Hasegawa K, Iizuka Y, Igarashi A, Katada N, Kobayashi J, Kubota T, Mori T, Nakai K, Okazaki N, Sugioka M, Umeki T, Yazawa Y, Lu DL (2004) Appl Catal A-Gen 272:329CrossRefGoogle Scholar
  25. 25.
    Yao HC, Yao YFY (1984) J Catal 86:254CrossRefGoogle Scholar
  26. 26.
    Komai S, Yazawa Y, Satsuma A, Hattori T (2005) J Jpn Petrol Inst 48:173CrossRefGoogle Scholar
  27. 27.
    Nagai Y, Hirabayashi T, Dohmae K, Takagi N, Minami T, Shinjoh H, Matsumoto S (2006) J Catal 242:103CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Toshihiko Osaki
    • 1
  • Kiho Nagashima
    • 1
  • Koji Watari
    • 1
  • Koji Tajiri
    • 1
  1. 1.National Institute of Advanced Industrial Science and Technology (AIST)NagoyaJapan

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