Conclusions
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1.
The H-pentasil-γ-Al2O3 catalytic system exhibits high activity and selectivity in the 350–500°C temperature range in the reaction of aromatization of ethylene, A sharp increase in the activity is observed when HTsVM (0.5–10%) is incorporated in Al2O3, and a moderate increase is observed on incorporation of Al2O3 in HTsVM.
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2.
A correlation between the activity and number of strong Brønsted and Lewis sites, determined spectrally by adsorption of pyridine, was found for the HTsVM-Al2O3 catalytic system; it was concluded that Brønsted and Lewis sites are required for the reaction of aromatization of ethylene.
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3.
The absence of additivity in the hydrophilic properties in comparison to the properties of the pure components was found in the HTsVM-Al2O3 system; it was hypothesized that this effect reflects a change in the organophilic properties, which has a positive effect on the activity and selectivity of the process.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 254–258, February, 1989.
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Bragin, O.V., Yakerson, V.L., Vasina, T.V. et al. Study of the catalytic properties of pentasil-containing composites in transformations of hydrocarbons. 1. Oligomerization and aromatization of ethylene on the pentasil-aluminum oxide system. Russ Chem Bull 38, 212–216 (1989). https://doi.org/10.1007/BF00953598
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DOI: https://doi.org/10.1007/BF00953598