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Ga2O3/HZSM5 propane aromatization catalysts. Influence of the hydrogen pretreatment on the acid and redox functions

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Abstract

The activity and selectivity of a mechanical Ga2O3/HZSM5 mixture in four model reactions (propane aromatization at 803 K,n-heptane cracking and meta-xylene isomerization at 623 K, methylcyclohexane transformation at 773 K) were compared after pretreatment at 873 K under nitrogen and under hydrogen flow. It was thus demonstrated that the hydrogen treatment provoked a significant increase in the dehydrogenating activity of the gallium species but only a small decrease in the protonic acidity. Moreover this hydrogen treatment created a significant hydrogenolysis activity.

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Authors and Affiliations

  1. URA CNRS 350, 40 Avenue du Recteur Pineau, 86022, Poitiers Cedex, France

    M. Barre, N. S. Gnep, P. Magnoux & M. Guisnet

  2. National Chemical Laboratory, 411008, Pune, India

    S. Sansare & V. R. Choudhary

Authors
  1. M. Barre
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  2. N. S. Gnep
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  3. P. Magnoux
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  4. S. Sansare
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  5. V. R. Choudhary
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  6. M. Guisnet
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Barre, M., Gnep, N.S., Magnoux, P. et al. Ga2O3/HZSM5 propane aromatization catalysts. Influence of the hydrogen pretreatment on the acid and redox functions. Catal Lett 21, 275–281 (1993). https://doi.org/10.1007/BF00769479

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  • DOI: https://doi.org/10.1007/BF00769479

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