Topics in Catalysis

, Volume 52, Issue 4, pp 344–350 | Cite as

DRIFT, XPS and XAS Investigation of Au–Ni/Al2O3 Synergetic Catalyst for Allylbenzene Isomerization

  • Olga P. Tkachenko
  • Leonid M. Kustov
  • Sergey A. Nikolaev
  • Vladimir V. Smirnov
  • Konstantin V. Klementiev
  • Alexander V. Naumkin
  • Ilya O. Volkov
  • Alexander Yu. Vasil’kov
  • Dmitry Yu. Murzin
Original Paper

Abstract

Au/Al2O3 and Ni/Al2O3 prepared by deposition-precipitation and impregnation methods, respectively, and Au–Ni/Al2O3 prepared by impregnation of the Au/Al2O3 system with nickel have been studied by physicochemical methods. The catalysts were tested in allylbenzene isomerization at 443 K. The isomerization on Au/Al2O3 proceeds with a rather low rate, while monometallic Ni/Al2O3 is inactive. Unlike monometallic catalysts, Au–Ni/Al2O3 demonstrates a strong synergetic effect: the isomerization rate on the bimetallic sample exceeds the sum of the rates over the individual metals by an order of magnitude. The catalysts structure was estimated by XPS, DRIFT, and XAS techniques. It was revealed that nickel in Au–Ni/Al2O3 and Ni/Al2O3 exist as Ni2+ cations with the coordination state close to that in the precursor, gold in Au/Al2O3 exist as Au0 nanoclusters, whereas the Au0 nanoclusters co-exist with Au3+ cations in the bimetallic Au–Ni/Al2O3 sample. Reasons of the synergetic catalytic effect for Au–Ni/Al2O3 are discussed in terms of the formation of new positively charged Au catalytic centers.

Keywords

Au–Ni/Al2O3 DRIFT XPS XAS Allylbenzene isomerization 

References

  1. 1.
    Haruta M (2004) Gold Bull 37:27Google Scholar
  2. 2.
    Haruta M, Date M (2001) Appl Catal A 222:427CrossRefGoogle Scholar
  3. 3.
    Hashmi ASK, Hutchings GJ (2006) Angew Chem Int Ed 45:7896CrossRefGoogle Scholar
  4. 4.
    Hayashi T, Tanaka K, Haruta M (1998) J Catal 178:566CrossRefGoogle Scholar
  5. 5.
    Andreeva D (2002) Gold Bull 35:82Google Scholar
  6. 6.
    Meyer R, Lemire C, Shaikhutdinov ShK, Freund H-J (2004) Gold Bull 37:72Google Scholar
  7. 7.
    Bond GC, Thompson DT (1999) Catal Rev—Sci Eng 41:319CrossRefGoogle Scholar
  8. 8.
    Smirnov VV, Nikolaev SA, Murav’eva GP, Tyurina LA, Vasil’kov AYu (2007) Kinetics and Catalysis 48:265 [Engl. Transl.]CrossRefGoogle Scholar
  9. 9.
    Nikolaev SA, Smirnov VV, Tjurina LA, Vasil’kov AYu, Naumkin AV (2006) The 4th international conference on gold science, technology and its application, Limerick, Ireland, p 303Google Scholar
  10. 10.
    Ankudinov AL, Ravel B, Rehr JJ, Conradson SD (1998) Phys Rev B 58:7565CrossRefGoogle Scholar
  11. 11.
    Klementiev KV VIPER for windows, freeware, www.desy.de/~klmn/viper.html
  12. 12.
    Kubelkova L, Novakova J, Jaeger NI, Schulz-Ekloff G (1993) Appl Catal A 95:87CrossRefGoogle Scholar
  13. 13.
    Davydov A (2003) Molecular spectroscopy of oxide catalyst surfaces. Wiley, EnglandCrossRefGoogle Scholar
  14. 14.
    Mihaylov M, Hadjiivanov KI (2002) Langmuir 18:4376CrossRefGoogle Scholar
  15. 15.
    Hadjiivanov KI, Vayssilov GN (2002) Adv Catal 47:307CrossRefGoogle Scholar
  16. 16.
    Qiu S, Ohnishi R, Ichikawa M (1992) J Chem Soc, Chem Commun: 1425Google Scholar
  17. 17.
    Wagner CD, Naumkin AV, Kraut-Vass A, Allison JW (2001) NIST Standart reference database, 20, Ver.3.1Google Scholar
  18. 18.
    Vasilkov AYu, Nikolaev SA, Smirnov VV, Naumkin AV, Volkov IO, Podshibikhin VL (2007) Mendeleev Commun 17:13Google Scholar
  19. 19.
    Mansour AN, Melendres CA (1996) Surf Sci Spectra 3:231CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Olga P. Tkachenko
    • 1
  • Leonid M. Kustov
    • 1
  • Sergey A. Nikolaev
    • 2
  • Vladimir V. Smirnov
    • 2
  • Konstantin V. Klementiev
    • 3
  • Alexander V. Naumkin
    • 4
  • Ilya O. Volkov
    • 4
  • Alexander Yu. Vasil’kov
    • 4
  • Dmitry Yu. Murzin
    • 5
  1. 1.N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of SciencesMoscowRussia
  2. 2.Chemical DepartmentLomonosov Moscow State UniversityMoscowRussia
  3. 3.ALBA synchrotron—CELLS, Campus UABBellaterra, BarcelonaSpain
  4. 4.A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of SciencesMoscowRussia
  5. 5.Åbo Akademi UniversityTurku/ÅboFinland

Personalised recommendations