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Differential thermal analysis of PdCu zeolites: Catalysts of oxidation of lower olefins into carbonyl compounds

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

Conclusions

  1. 1.

    Type A, X, and Y initial zeolites and mordenite and palladium-copper catalysts for oxidation of olefins into carbonyl compounds prepared from them by ion exchange and impregnation methods were investigated by differential thermal analysis (DTA).

  2. 2.

    The thermal stability of the aluminosilicate framework of the starting and PdCu forms increased with an increase in the SiO2/Al2O3 ratio. For type Y zeolites and the impregnation catalysts based on them, the thermal stability increased with an increase in the size of the alkali metal cations contained in the zeolite.

  3. 3.

    Based on the DTA data, the processes which take place in activation and regeneration of PdCu catalysts were interpreted. Activation of the starting PdCu zeolites in air was accompanied by oxidation of the NH3 added to the catalyst during preparation. Both desorption of low-boiling products of the reaction and oxidation of difficult-to-desorb substances take place in conditions of oxidative regeneration of the PdCu samples after catalysis.

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Authors and Affiliations

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

    N. Ya. Usachev, A. P. Rodin, Yu. S. Khodakov & Kh. M. Minachev

Authors
  1. N. Ya. Usachev
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  2. A. P. Rodin
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  3. Yu. S. Khodakov
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  4. Kh. M. Minachev
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 747–753, April, 1984.

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Usachev, N.Y., Rodin, A.P., Khodakov, Y.S. et al. Differential thermal analysis of PdCu zeolites: Catalysts of oxidation of lower olefins into carbonyl compounds. Russ Chem Bull 33, 686–692 (1984). https://doi.org/10.1007/BF00947814

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  • DOI: https://doi.org/10.1007/BF00947814

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