Binary phase diagram between phenanthrene and its main impurity: Dibenzothiophene

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Abstract

The binary phase diagram between commercial Phenanthrene and its main impurity, Dibenzothiophene, is established under atmospheric pressure by means of structural and thermal analyses. This determination appears as a requirement for performing efficient zone melting on Phenanthrene. The investigations on this binary phase diagram reveal stable and metastable eutectic invariants and a single eutectoid invariant. Two hypotheses are proposed for an undetermined invariant detected at 80°C in the domain rich in Dibenzothiophene. Moreover, solid-solutions in the Phenanthrene rich-domain are characterized. Finally, the impact of these heterogeneous equilibria on the feasibility of Phenanthrene refining by means of zone melting is discussed. © Owned by the authors.

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Couvrat, N., Cartigny, Y., Tisse, S., Petit, M. N., & Coquerel, G. (2011). Binary phase diagram between phenanthrene and its main impurity: Dibenzothiophene. In JEEP 2011 - 37th Conference on Phase Equilibria. EDP Sciences. https://doi.org/10.1051/jeep/201100006

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