Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
217371 | The Journal of Chemical Thermodynamics | 2007 | 18 Pages |
Apparent molar volumes Vϕ were determined for aqueous adonitol, dulcitol, glycerol, meso-erythritol, myo-inositol, d-sorbitol, and xylitol at temperatures from (278.15 to 368.15) K and at the pressure 0.35 MPa, and apparent molar heat capacities Cp,ϕ of the same solutions were determined at temperatures from (278.15 to 363.15) K at the same pressure. Molalities m/(mol · kg−1) of the solutions were in the range (0.02 ⩽ m ⩽ 3.2) for adonitol, (0.02 ⩽ m ⩽ 0.15) for dulcitol, (0.02 ⩽ m ⩽ 5.0) for glycerol, (0.02 ⩽ m ⩽ 3.0) for meso-erythritol, (0.02 ⩽ m ⩽ 0.5) for myo-inositol, (0.02 ⩽ m ⩽ 2.0) for d-sorbitol, and (0.02 ⩽ m ⩽ 2.7) for xylitol. A vibrating tube densimeter was used to obtain solution densities and a fixed-cell temperature scanning calorimeter was used to obtain heat capacities. Values of Vϕ and Cp,ϕ for these sugar alcohols are discussed relative to one another and compared to values from the literature, where available.