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作者

By:Zhu, Y [ 1,2 ] Yu, L [ 1 ] Pang, XH [ 2 ]

作者单位

Taishan Med Coll, Dept Chem & Chem Engn, Tai An 271016, Shandong, Peoples R China Organization-Enhanced Name(s) Taishan Medical University Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China Organization-Enhanced Name(s) Shandong University

刊名

Journal of Chemical and Engineering Data

年份

2009

卷号

Vol.54 No.6

页码

1910-1912

分类号

540, 660

摘要

The enthalpies of mixing of l-serine and l-threonine with butanol and their respective enthalpies of dilution in aqueous solutions at 298.15 K and those of amino acids (glycine, l-alanine, l-serine, l-threonine, and l-proline) with butanol in aqueous solutions at 310.15 K were determined as a function of the mole fraction by flow microcalorimetric measurements. These experimental results have been analyzed to obtain the heterotactic enthalpic interaction coefficients (hxy) according to the McMil...更多

The enthalpies of mixing of l-serine and l-threonine with butanol and their respective enthalpies of dilution in aqueous solutions at 298.15 K and those of amino acids (glycine, l-alanine, l-serine, l-threonine, and l-proline) with butanol in aqueous solutions at 310.15 K were determined as a function of the mole fraction by flow microcalorimetric measurements. These experimental results have been analyzed to obtain the heterotactic enthalpic interaction coefficients (hxy) according to the McMillan?Mayer theory. The results obtained in the present work are compared with the data of our previous work at 298.15 K. It has been found that the hxy coefficients between the amino acid molecules studied and butanol molecules in aqueous solutions at (298.15 and 310.15) K are all positive. The hxy coefficients at 310.15 K are more positive than those of 298.15 K for the same system studied. The results are discussed in terms of solute?solute interaction and solute?solvent interaction.收起

学科

【SCI学科】ENGINEERING, CHEMICAL;CHEMISTRY, MULTIDISCIPLINARY;THERMODYNAMICS 【ESI学科】CHEMISTRY

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