Kinetics and Catalysis

, Volume 45, Issue 5, pp 708–713 | Cite as

The Effect of Modification on the Structural, Acidic, and Catalytic Properties of a Layered Aluminosilicate

  • S. Ts. Khankhasaeva
  • S. V. Badmaeva
  • E. Ts. Dashinamzhilova
  • M. N. Timofeeva
  • E. B. Burgina
  • A. A. Budneva
  • E. A. Paukshtis

Abstract

The effect of modification on the structural, acidic, and catalytic properties of a natural layered aluminosilicate containing 90% montmorillonite was studied. With the use of low-temperature nitrogen adsorption and XRD analysis, it was found that the addition of hydroxo complexes of aluminum prevents the silicate layers of the layered aluminosilicate from closing upon heating and results both in the formation of stable micropores and in a considerable increase in the specific surface area. The acidic properties of the H, Na, and Al forms of the layered aluminosilicate were studied by IR spectroscopy of adsorbed CO molecules and by the indicator method. After modification with hydroxo complexes of aluminum, the number of Lewis acid sites and the accessibility of acidic OH groups to CO adsorption increased. The total number and strength of acid sites increased as the calcination temperature of the layered aluminosilicate was increased. A correlation between catalytic activity in the reaction of acetone dimerization and the number of acid sites in different forms of the layered aluminosilicate was obtained.

REFERENCES

  1. 1.
    Sels, B.F., De Vos, D.E., and Jacobs, P.A., Cat.Rev.–Sci.Eng., 2001, vol. 43, no. 4, p. 443.Google Scholar
  2. 2.
    Gandia, L.M., Vicente, M.A., and Gil, A., Appl.Catal., A, 2000, vol. 196, p. 281.Google Scholar
  3. 3.
    Prinetto, F., Tichit, D., Teissier, R., and Coq, B., Catal. Today, 2000, vol. 55, p. 103.Google Scholar
  4. 4.
    Clearfield, A., Advanced Catalysts and Nanostructured Materials, New York: Academic, 1996, p. 345.Google Scholar
  5. 5.
    Pinnavaia, T.J., Science, 1983, vol. 220, p. 365.Google Scholar
  6. 6.
    Kloprogge, J.I., J.Porous Mater., 1998, vol. 5, p. 5.Google Scholar
  7. 7.
    Narkynan, S. and Deshpande, K., Appl.Catal., A, 2000, vol. 143, p. 17.Google Scholar
  8. 8.
    Kumar, P., Jasta, R.V., and Bhat, S.G., Indian J.Chem., 1997, vol. 36, p. 667.Google Scholar
  9. 9.
    Gorbunov, N.I., Vysokodispersnye mineraly i metody ikh izucheniya (Finely Dispersed Minerals and Methods of Their Study), Moscow: Akad. Nauk SSSR, 1963, p. 195.Google Scholar
  10. 10.
    Rentgenografiya osnovnykh tipov porodoobrazuyu-shchikh mineralov (sloistye i karkasnye silikaty) [X-ray Diffraction Analysis of the Basic Types of Rock-Forming Minerals (Layered and Network Silicates)], Frank-Kamenetskii, V.A., Ed., Leningrad: Nedra, 1983, p. 359.Google Scholar
  11. 11.
    Grosh, A.K. and Moffat, J.B., J.Catal., 1986, vol. 101, p. 238.Google Scholar
  12. 12.
    Fenelonov, V.B., Poristyi uglerod (Porous Carbon), Novosibirsk: Izd-vo Instituta kataliza, 1995, p. 236.Google Scholar
  13. 13.
    Khankhasaeva, S.Ts., Kulikov, S.M., and Kozhevnikov, I.V., Kinet.Katal., 1990, vol. 31, no. 1, p. 216.Google Scholar
  14. 14.
    Tarasevich, Yu.I., Stroenie i khimiya poverkhnosti sloistykh silikatov (Structure and Surface Chemistry of Layered Silicates), Kiev: Naukova Dumka, 1988, p. 159.Google Scholar
  15. 15.
    Paukshtis, E.A., Infrakrasnaya spektroskopiya v getero-gennom kislotno-osnovnom katalize (Infrared Spectroscopy in Heterogeneous Acid–Base Catalysis), Novosibirsk: Nauka, 1992, p. 254.Google Scholar
  16. 16.
    Cavani, F., Trifiro, F., and Vaccari, A., Catal.Today, 1991, vol. 1, no. 2, p. 173.Google Scholar

Copyright information

© Kinetics and Catalysis 2004

Authors and Affiliations

  • S. Ts. Khankhasaeva
    • 1
  • S. V. Badmaeva
    • 1
  • E. Ts. Dashinamzhilova
    • 1
  • M. N. Timofeeva
    • 2
  • E. B. Burgina
    • 1
  • A. A. Budneva
    • 1
  • E. A. Paukshtis
    • 1
  1. 1.Baikal Institute of Nature Management, Siberian DivisionRussian Academy of Sciences, Ulan-UdeBuryat RepublicRussia
  2. 2.Boreskov Institute of Catalysis, Siberian DivisionRussian Academy of SciencesNovosibirskRussia

Personalised recommendations