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Effect of steaming on composition of acid centers and catalytic properties of superhigh-silica zeolites in pseudocumene isomerization

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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    By means of diffuse scattering IR spectroscopy and x-ray photoelectron spectroscopy, it has been shown that thermal treatment leads to dealuminization of the lattice of TsVM zeolite and to a substantial decrease in the total number of acid centers with an increase in the relative number of Lewis acid centers, related in particular to extralattice aluminum.

  2. 2.

    The decrease in the total number of acid centers results in a decrease in pseudo-cumene conversion, but an increase in selectivity of isomerization. It is concluded that the reaction takes place in the mouths of the pores or on the outer surface of the zeolite.

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Literature cited

  1. V. B. Kazanskii (Kazansky), V. Yu. Borovkov, and L. M. Kustov, Proceedings of the 8th International Congress on Catalysis, Elsevier, West Berlin (1984), Vol. 3, p. 3.

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Authors and Affiliations

  1. N. D. Zelinskii Institute of Organic Chemistry, Academy of Sciences of the USSR, Moscow

    L. M. Kustov, L. A. Surina, V. B. Kazanskii, P. A. Zhdan & B. K. Nefedov

Authors
  1. L. M. Kustov
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  2. L. A. Surina
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  3. V. B. Kazanskii
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  4. P. A. Zhdan
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  5. B. K. Nefedov
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 746–750, April, 1988.

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Kustov, L.M., Surina, L.A., Kazanskii, V.B. et al. Effect of steaming on composition of acid centers and catalytic properties of superhigh-silica zeolites in pseudocumene isomerization. Russ Chem Bull 37, 633–636 (1988). https://doi.org/10.1007/BF01455464

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  • DOI: https://doi.org/10.1007/BF01455464

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