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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。
In this paper, silica gel and activated carbon adsorbed benzoic acid and anthracene from binary mixed solvents. The results show that the solubility of solute is mainly determined by the solubility of non-polar mixed solvent. In other cases, the solubility is not the main factor affecting the adsorption. When the anthracene is adsorbed from the mixed solvent with the highest constant boiling point, the adsorption capacity depends on the solvent composition Positive deviation from the straight line. When the solute is adsorbed from the mixed solvent with the lowest constant boiling point, the relationship between the amount of adsorption and the solvent composition is negatively offset from the straight line. In this paper, the experimental results are explained qualitatively from the interaction of solvent molecules in mixed solvents.