水溶液中四种酰胺与2,3-丁二醇的焓相互作用  

The Enthalpic Interactions between Four Kinds of Acidamides and 2,3-Butanediols in Aqueous Solutions

作　　者：郑晓雯[1] 杨艳[1] 王培贵[1] 赵燕[1] 孙海涛[1] 张洪林[1] 

机构地区：[1]曲阜师范大学化学科学学院,山东省曲阜市273165

出　　处：《曲阜师范大学学报（自然科学版）》2006年第3期88-92,共5页Journal of Qufu Normal University(Natural Science)

摘　　要：利用2277热活性检测仪的流动测量系统测定了310.15 K时,甲酰胺、N,N-二甲基甲酰胺、乙酰胺、N,N-二甲基乙酰胺分别与2,3-丁二醇在水溶液中混合过程焓变以及各自的稀释焓,根据McMillan-May-er理论关联得到了各级焓作用系数.讨论了不同酰胺与2,3-丁二醇的相互作用机制.结果表明,2,3-丁二醇与四种酰胺分子的hxy均为正.不同酰胺与2,3-丁二醇的hxy大小主要取决于酰胺分子结构的差异,N,N-二甲基乙酰胺与2,3-丁二醇的焓对作用系数hxy最大,用溶质-溶质相互作用和溶质-溶剂相互作用理论对结果进行了解释.The enthalpies of mixing of aqueous four kinds of acidamides solutions and 2,3-butanediols solution are determined at 310. 15 K by 2277 flow microcalorimetric system. In terms of the McMillan-Mayer theory, the data of the enthalpic pair interaction coefficient （hxy） are obtained, and the interactions are disscussed. The results show that hxy values between different acid amides and 2,3-butanediols denpend on the structures of acidamides. Because of the most --CH3 in N, N-dimethyl acetamide, its hxy values is biggest. An explaination of the results are given in terms of solute-solute and solute-solvent interactions theory.

关 键 词：酰胺 2 3-丁二醇 焓对作用系数 

分 类 号：O642.3[理学—物理化学]