Catalytic properties of the system Al2O3-Fe2O3

  • A. M. Rubinshtein
  • N. A. Pribytkova


  1. 1.

    An investigation was made of the effect of composition and thermal treatment conditions of A12O3-Fe2O3 catalysts on the specific activity in the dehydration (Asp) and dehydrogenation(A′sp) of i-C3H7OH at 260–290°.

  2. 2.

    Dehydration of alcohol occurs on the A12O3 phase with Fe2O3 dissolved in it. The addition of Fe2O3 strongly reduces Asp of Al2O3, though it also passes through a maximum at 32–40 mol. % of Fe2O3. With a rise in catalyst firing temperature from 400 to 750°, Asp increases.

  3. 3.

    Dehydrogenation, which is caused by the solid solution of A12O3 in Fe2O3, becomes appreciable with an Fe2O3 content of 18 mol. %; A′sp increases rapidly and nonlinearly with an increase in Fe2O3 concentration and a rise in catalyst firing temperature.

  4. 4.

    A′sp for catalysts fired at 400° (all paramagnetic) changes with composition symbatically with the value of the magnetic susceptibility. No relation was observed between the ferromagnetism of catalysts and A′sp.

  5. 5.

    Although some Al2O3-Fe2O3 catalysts have a considerably greater specific surface, their over-all dehydrating activity is lower than that of Al2O3 obtained under analogous conditions.



Alcohol Al2O3 Solid Solution Fe2O3 Dehydration 
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Copyright information

© Consultants Bureau Enterprises, Inc. 1961

Authors and Affiliations

  • A. M. Rubinshtein
    • 1
  • N. A. Pribytkova
    • 1
  1. 1.N. D. Zelinskii Institute of Organic ChemistryAcademy of SciencesUSSR

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