Thermodynamic Study on the Sublimation of Anthracene-Like Compounds

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Manuel J S Monte (Autor) FCUP; Carlos A D Sousa (Autor) Outra; Jose M S Fonseca (Autor) Outra; Luis M N B F Santos (Autor) FCUP

Revista

Título: Journal of Chemical & Engineering Data

Vol. 55 Nº 1

Páginas: 5264-5270

ISSN: 0021-9568

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 19 Citações

Scopus - 21 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-003-1FP

DOI: 10.1021/je100850z

Abstract (EN): A Knudsen mass-loss effusion technique was used for measuring the vapor pressures at different temperatures of the following crystalline compounds: anthraquinone (CAS No. 84-65-1), between (377.06 and 395.03) K; anthrone (CAS No. 90-44-8), between (346.15 and 365.14) K; thianthrene (CAS No. 92-85-3), between (344.27 and 264.06) K; thioxanthone (CAS No. 492-22-8), between (369.12 and 387.20) K; and xanthone (CAS No. 90-47-1), between (342.22 and 362.22) K. From the temperature dependence of the vapor pressure of each crystalline compound, the standard (p degrees = 10(5) Pa) molar enthalpies and Gibbs energies of sublimation, at T = 298.15 K, were derived. The measured thermodynamic properties are compared with literature results for similar compounds, and correlations for estimation of the vapor pressures and enthalpy of sublimation for anthracene-like compounds are presented.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7