Thermodynamic study on the sublimation of 1,2-diphenylethane and of 3-phenylpropiolic acid

• Tipo: Artigo em Revista Científica Internacional
• Data: 2001

Autores

Monte, MJS (Autor) FCUP; Hillesheim, DM (Autor) Outra

Revista

Título: Journal of Chemical Thermodynamics

Vol. 33

Páginas: 849-857

ISSN: 0021-9614

Editora: Elsevier

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 7 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-000-TQX

DOI: 10.1006/jcht.2000.0761

Abstract (EN): The Knudsen mass-loss effusion technique was used to measure the vapour pressures at different temperatures of the following crystalline compounds: 1,2-diphenylethane (bibenzyl), between T = 289.16 K and T = 303.20 K, and of 3-phenylpropiolic acid between T = 329.15 K and T = 343.15 K. From the temperature dependence of the vapour pressure, the standard molar enthalpies of sublimation at the mean temperature of the experimental range were derived by the Clausius-Clapeyron equation. From these results the standard, p degrees = 10(5) Pa, molar enthalpies, entropies, and Gibbs energies of sublimation at T = 298.15 K, were calculated: [GRAPHICS] (C) 2001 Academic Press.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9