Study on the volatility of halogenated fluorenes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Oliveira, JASA (Autor) Outra; Oliveira, TSM (Autor) Outra; Gaspar, A (Autor) Outra; Fernanda Borges (Autor) FCUP; Maria D M C R Ribeiro da Silva (Autor) FCUP; Manuel J S Monte (Autor) FCUP

Revista

Título: Chemosphere

Vol. 157

Páginas: 25-32

ISSN: 0045-6535

Editora: Elsevier

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-00K-GJD

DOI: 10.1016/j.chemosphere.2016.05.014

Abstract (EN): This work reports the experimental determination of relevant thermophysical properties of five halogenated fluorenes. The vapor pressures of the compounds studied were measured at different temperatures using two different experimental techniques. The static method was used for studying 2-fluorofluorene (liquid and crystal vapor pressures between 321.04 K and 411.88 K), 2-iodofluorene (liquid and crystal vapor pressures between 362.63 K and 413.86 K), and 2,7-dichlorofluorene (crystal vapor pressures between 364.64 K and 394.22 K). The Knudsen effusion method was employed to determine the vapor pressures of 2,7-difluorofluorene (crystal vapor pressures between 299.17 K and 321.19 K), 2,7-diiodofluorene (crystal vapor pressures between 393.19 K and 415.14 K), and (again) 2-iodofluorene (crystal vapor pressures between 341.16 K and 361.12 K). The temperatures and the molar enthalpies of fusion of the five compounds were determined using differential scanning calorimetry. The application to halogenated fluorenes of recently developed methods for predicting vapor pressures and enthalpies of sublimation and vaporization of substituted benzenes is also discussed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8