Solubility of high-value compounds in ethyl lactate: Measurements and modelling

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Marina S. Manic (Autor) Outra; David Villanueva (Autor) Outra; Tiziana Fornari (Autor) Outra; António J. Queimada (Autor) Outra; Eugénia A. Macedo (Autor) FEUP; Vesna Najdanovic–Visak (Autor) Outra

Revista

Título: Journal of Chemical Thermodynamics

Vol. 48

Páginas: 93-100

ISSN: 0021-9614

Editora: Elsevier

Indexação

ISI Web of Knowledge - 28 Citações

Scopus - 35 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas

FOS: Ciências da engenharia e tecnologias

Projetos Associados

LA 20 - Projeto Estratégico-LA 20 - 2011-2012

Outras Informações

ID Authenticus: P-002-AYF

DOI: 10.1016/j.jct.2011.12.005

Abstract (EN): (Solid + liquid) equilibria of binary mixtures containing high-value compounds and ethyl lactate were studied. Using the gravimetric method, the solubility of various solutes such as caffeine, vanillic acid, ferulic acid, caffeic acid and thymol in ethyl lactate was measured as a function of temperature over the range of (298.2 to 343.2) K, at atmospheric pressure. The differences in solubility of a given solute in water-saturated and dry ethyl lactate were observed. The deviation of these binary systems from ideal mixture behaviour was discussed. In order to understand the solubilization process, melting properties of pure solutes were determined by differential scanning calorimetry (DSC). The solubility data obtained were represented using UNIQUAC and UNIFAC-based models as well as with the Cubic-Plus-Association (CPA) equation of state. The results of the modeling indicate that these models are the appropriate tools for representing the solubility behaviour of various solutes in ethyl lactate.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8