Solute retention in column liquid chromatography. X. Determination of solute infinite-dilution activity coefficients in methanol, water, and their mixtures, by combined gas-liquid and liquid-liquid chromatography

Journal Article · Fri Jan 01 00:00:00 EST 1988 · J. Liquid Chromatogr.; (United States)

DOI:https://doi.org/10.1080/01483918808068333· OSTI ID:7050840

Djerki, R A; Laub, R J

The Raoult's-law activity coefficients of 3- to 7-carbon aliphatic aldehyde, ketone, ester, and alcohol solutes at infinite dilution in methanol, water, and mixtures of the two and in polydimethysiloxane, all at 293-308 K, have been determined for the first time by appropriate combination of GLC and LLC retention data. The latter data are reported in terms of mole factions, while the former are given in concentration units of molality. However, interpretation of the data is difficult because of the multiplicity of the retention mechanisms. Nevertheless, the combined GLC/LLC technique, which had been applied previously only to pure solvents, is said to offer a number of advantages over static techniques for the determination of solute infinite-dilution activity coefficients with volatile solvents, especially with mixtures of solvents.

• Research Organization: Dept. of Chemistry, Brigham Young Univ., Provo, UT (US)
• OSTI ID: 7050840
• Journal Information: J. Liquid Chromatogr.; (United States), Vol. 11:3
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
METHANOL
GAS CHROMATOGRAPHY
LIQUID COLUMN CHROMATOGRAPHY
MIXTURES
SEPARATION PROCESSES
WATER
CHEMICAL ANALYSIS
TECHNOLOGY ASSESSMENT
ALCOHOLS
CHROMATOGRAPHY
DISPERSIONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
090220* - Alcohol Fuels- Preparation- (1976-1989)
400102 - Chemical & Spectral Procedures
400201 - Chemical & Physicochemical Properties