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|Type:||Artigo de evento|
|Title:||Enthalpy Of Solution Of Fullerene In Some Aromatic Solvents|
|Abstract:||Enthalpies of solution (Δ solnH θ) of fullerene in benzene, toluene, bromobenzene, 1,2-dichlorobenzene and nitrobenzene have been measured in a Precision Solution Calorimeter at 298 K, by using the ampoule breaking technique. The dissolution of C 60 in these aromatic organic solvents was observed to be exothermic, with exception of benzene and nitrobenzene, in which the enthalpy is close to zero. From the experimental values of Δ solnH θ and solubility data of C 60 from the literature, Δ solnG θ and Δ solnS θ were calculated. We attempted to correlate (Δ solnH θ) of C 60 in these solvents with the solubility, Hildebrand's solubility parameter and polarizability parameter. Thermodynamic data suggest that the process of dissolution of C 60 in the studied aromatic solvents is entropically controlled. © 2004 Elsevier B.V. All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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