自溶液中的吸附(Ⅹ)——从二元混合溶剂中吸附有机溶质的研究

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (6): 874.

自溶液中的吸附(Ⅹ)——从二元混合溶剂中吸附有机溶质的研究

赵振国, 梁文平, 彭向东

北京大学化学系

收稿日期:1983-07-09 出版日期:1984-12-24 发布日期:1984-12-24

Adsorption from of Solutions(Ⅹ)——The Adsorption of Some Organic Solutes from Binary Mixed Solvents

Zhao Zhenguo, Liang Wenping, Peng Xiangdong

Department of Chemistry, Peking University, Beijing

Received:1983-07-09 Online:1984-12-24 Published:1984-12-24

摘要/Abstract

摘要： 本文研究了硅胶和活性炭从二元混合溶剂中吸附苯甲酸和蒽。结果表明,对非极性混合溶剂,溶质吸附量主要由溶解度决定;在其它情况,溶解度不是影响吸附的主要因素,从具有最高恒沸点的混合溶剂中吸附蒽时,吸附量与溶剂组成的关系与直线呈正偏差。而从具有最低恒沸点的混合溶剂中吸附溶质时,吸附量与溶剂组成的关系与直线呈负偏差。文中从混合溶剂中溶剂分子的相互作用对实验结果做了定性的解释。

Abstract: In this paper, we have studied the adsorption of benzoic acid and anthracene from binary mixed solvents; on silica gel and activated carbon. The experimental results show that the adsorption of solutes from non-polar mixed solvents depends simply on their solubilities. However, when the adsorption of solutes from polar non-polar or polar-polar mixed solvents was dealt with, the situation is very complex. From constant boiling mixtures with a maximum (for example chloroform-acetone; 1, 2, 2-tetrachloroethane-cyclohexanone eto.),the, adsorption of anthracene varies with, the composition of mixed solvents, and a positive deviation from straight line is observed. From constant boiling mixtures with a minimum, the adsorption of solutes also varies with the composition of mixed solvents, but a negative deviation is observed. Based on the interaction between molecules in mixed solvents, the experimental results may be explained qualitatively.

TrendMD:

赵振国, 梁文平, 彭向东. 自溶液中的吸附(Ⅹ)——从二元混合溶剂中吸附有机溶质的研究. 高等学校化学学报, 1984, 5(6): 874.

Zhao Zhenguo, Liang Wenping, Peng Xiangdong . Adsorption from of Solutions(Ⅹ)——The Adsorption of Some Organic Solutes from Binary Mixed Solvents. Chem. J. Chinese Universities, 1984, 5(6): 874.