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The mobility of chemisorbed molecules and the surface regeneration of active centers in the dehydration of isopropanol on aluminum oxide and aluminosilicate

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

Conclusions

  1. 1.

    By a differential isotope method involving14C the authors have investigated the surface mobility of chemisorbed molecules of isopropanol during its dehydration in an adsorption layer on aluminum oxide and aluminosilicate.

  2. 2.

    The chemisorbed alcohol molecules possess marked surface mobility which plays a decisive part in the mechanism of surface regeneration of the active catalyst centers in the process of dehydration.

  3. 3.

    The cessation of the reaction long before the adsorbed alcohol is completely used up is explained by the hypothesis that there is local overpopulation of the active sectors by water formed by the reaction; this hinders further surface regeneration and repetition of the elementary events of dehydration.

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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 493–498, March, 1976.

The authors thank A. V. Mikhalev and G. S. Libinson (All-Union Scientific-Research Institute of Antibiotics) for lending them the high-sensitivity Calvet calorimeter to measure the heats of adsorption.

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Makhlis, L.A., Vasserberg, V.É. The mobility of chemisorbed molecules and the surface regeneration of active centers in the dehydration of isopropanol on aluminum oxide and aluminosilicate. Russ Chem Bull 25, 476–480 (1976). https://doi.org/10.1007/BF01106635

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  • DOI: https://doi.org/10.1007/BF01106635

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