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Investigation of the peculiarities of the oxidation of cyclohexane on NaY and NaCuY zeolites by the method of IR spectroscopy

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

Conclusions

  1. 1.

    Spectral investigations using a closed method showed the existence of a strong adsorption of cyclohexane (CH) on NaY zeolite in the precatalytic temperature region.

  2. 2.

    In the case of passage of a mixture of C6H12+O2, NaY zeolite is characterized by the appearance of the absorption bands 1720, 1780, and 1820 cm−1, corresponding to carbonyl-containing and peroxide compounds, at 60–80°. In the case of partial replacement of the Na+ ion by Cu2+, the formation of these compounds is not recorded up to 180°.

  3. 3.

    The process of oxidation of CH on zeolites is of a heterogeneous — homogeneous character. The transition of the reaction into the volume occurs in the case of sodium zeolite at∼120°, and in the case of copper — sodium zeolite at 220°.

  4. 4.

    A fluctuating system of the reaction of oxidation of CH on NaY zeolite is of an autocatalytic character and is associated with the periodic accumulation of peroxide-type compounds on the surface of the zeolites.

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Literature cited

  1. I. L. Tsitovskaya, O. V. Al'tshuler, and O. V. Krylov, Dokl. Akad. Nauk SSSR,212, 1399 (1973).

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  2. A. L. Agudo, F. R. Badcock, and F. S. Stone, Fundamentals of the Prediction of Catalytic Action [Russian translation], Vol. 2, Nauka (1970), p. 169.

  3. H. Hobert, G. Marx, P. Fink, and H. R. Schulz, Wiss. Ztschr. Friedrich Schiller Univ., Jena, Math.-Nat. R.,20, No. 1, 123 (1971).

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  4. K. Nakanisi, Infrared Spectra and Structure of Organic Compounds [Russian translation], Mir (1965).

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Author information

Authors and Affiliations

  1. Institute of Chemical Physics, Academy of Sciences of the USSR, Moscow

    A. A. Ukharskii, A. A. Kadushin, O. V. Al'tshuler & I. L. Tsitovskaya

Authors
  1. A. A. Ukharskii
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  2. A. A. Kadushin
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  3. O. V. Al'tshuler
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  4. I. L. Tsitovskaya
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Additional information

The authors would like to express their gratitude to O. M. Vinogradova for aid in the experimental work and discussion of the results obtained.

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 765–769, April, 1975.

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Ukharskii, A.A., Kadushin, A.A., Al'tshuler, O.V. et al. Investigation of the peculiarities of the oxidation of cyclohexane on NaY and NaCuY zeolites by the method of IR spectroscopy. Russ Chem Bull 24, 688–691 (1975). https://doi.org/10.1007/BF00920674

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  • DOI: https://doi.org/10.1007/BF00920674

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