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Kinetic study of 1,5-cyclooctadiene hydro-isomerization on Pd/pumice catalysts

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Abstract

A new route for obtaining 1,4-cyclooctadiene by catalytic isomerization of 1,5-cyclooctadiene at low temperature in presence of H2 in a three-phase reactor is presented. Wei, Prater and Silvestri methods are used for the kinetic studies. A comparison of the activity-selectivity patterns of the Pd/pumice catalysts with Pd on silica and Pt and Pd–Pt on pumice catalysts is performed. Although Pt catalysts are not active in the hydro-isomerization of 1,5-cyclooctadiene, the presence of small amount of Pt in Pd/pumice catalysts increases the yield to 1,4-cyclooctadiene. Besides the catalyst characteristics, temperature and H2 pressure influence the production of 1,4-cyclooctadiene. A mechanism of the process is proposed.

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Authors and Affiliations

  1. CNR, Istituto di Chimica e Tecnologia dei Prodotti Naturali del, Via Ugo La Malfa 153, 90146, Palermo, ItalyE-mail:

    Dario Duca & Giulio Deganello

  2. Dipartimento di Chimica Fisica, Università di Palermo, Via Archirafi 26, 90123, Palermo, ItalyE-mail:

    Gianfranco La Manna

Authors
  1. Dario Duca
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  2. Gianfranco La Manna
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  3. Giulio Deganello
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Duca, D., La Manna, G. & Deganello, G. Kinetic study of 1,5-cyclooctadiene hydro-isomerization on Pd/pumice catalysts. Catalysis Letters 52, 73–79 (1998). https://doi.org/10.1023/A:1019011201558

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  • DOI: https://doi.org/10.1023/A:1019011201558

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