A thermodynamic study of glucose and related oligomers in aqueous solution: Vapor pressures and enthalpies of mixing

S.A. Cooke, Svava Osk Jonsdottir, Peter Westh

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Vapor pressures above aqueous solutions of glucose and maltose at both 298.06 K and 317.99 K and vapor pressures above aqueous solutions of cellobiose, maltotriose, maltotetraose, and maltopentaose at 317.99 K have been measured. The excess enthalpies have been recorded for all of the above-mentioned systems at 318.15 K. A theoretical model is examined in which existing interaction parameters, calculated for the water + 1,2-ethanediol system by using a molecular mechanical approach, are incorporated into the UNIQUAC equation to describe the vapor pressures of the aforementioned series of saccharides in aqueous solution. This so-called transference principle is found to be of interest in furthering the discussion concerning the applicability of lattice-based models for solution theory.
Original languageEnglish
JournalJOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume47
Issue number5
Pages (from-to)1185-1192
ISSN0021-9568
Publication statusPublished - 2002

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