Phase behaviour of the catalyst dicarbonyl(η5- cyclopentadienyl)-cobalt in carbon dioxide

T. Casimiro, F. Montilla, S. Garcia, T. Avilés, S. Raeissi, A. Shariati, C. J. Peters, M. Nunes da Ponte, A. Aguiar-Ricardo

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9 Citations (Scopus)


The phase behaviour of the binary mixture of carbon dioxide and the cobalt complex dicarbonyl(η5-cyclopentadienyl)-cobalt, CpCo(CO) 2, has been investigated. This organometallic compound is one of the most effective catalysts of cyclotrimerization reactions of arylisocyanates and alkynes. Vapour-liquid equilibrium (VLE) measurements were undertaken in a static analytical apparatus at 313.15, 323.15 and 363.15 K at pressures up to 15 MPa. p, T isopleths were measured by a synthetic method in a Cailletet apparatus. Nine different compositions ranging from 17.56 to 94.23 mol% of CO2 were measured up to 15 MPa. Modelling with the Peng-Robinson equation of state (PR EOS) gave reasonable results in the correlation of the experimental phase equilibrium compositions using two temperature-dependent interaction parameters.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalJournal of Supercritical Fluids
Issue number1
Publication statusPublished - 1 Sep 2004


  • CO
  • CpCo(CO)
  • Organometallic catalyst
  • PR EOS
  • VLE


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