Vapor pressures and phase changes enthalpy and Gibbs energy of three crystalline monomethyl benzenedicarboxylates

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Monte, MJS (Autor) FCUP; Sousa, CAD (Autor) Outra

Revista

Título: Journal of Chemical & Engineering Data

Vol. 50 Nº 1

Páginas: 2101-2105

ISSN: 0021-9568

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 11 Citações

Scopus - 11 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-000-0QA

DOI: 10.1021/je0503305

Abstract (EN): The Knudsen mass-loss effusion technique was used to measure the vapor pressures, between 0.1 Pa and 1 Pa, of the three monomethyl benzenedicarboxylates over the following temperature intervals: monomethyl phthalate, between 335.28 K and 355.28 K; monomethyl isophthalate, between 359.26 K and 379.12 K; monomethyl terephthalate, between 363.16 K and 381.51 K. From the variation of the vapor pressures with temperature, the standard molar enthalpies, entropies, and Gibbs energies of sublimation at T = 298.15 K were calculated. The volatility of the studied compounds is compared with the volatilities of the benzene dicarboxylic acids and of the dimethyl benzenedicarboxylates.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5