吸附分子结构单元与溶液吸附常数的关系

本工作利用硅胶自环己烷中附醇.酮.酯. 活性炭自环己烷中吸附芳香化合物的实验结果计算证明,这些化合物吸附的Henry常数K(K=n^s~m.b)~i,式中n^s~m. b 为Langmuir等温式中极限吸附量,b为与吸附热有关的常数,n~i为构成分子的i 结构单元的Henry常数,这一结果给出了在一定条件下预示吸附等温线的可能性.

Correlation between the structure of adsorbed molecules and the adsorption constants from solution

The calculated results from the adsorption data for alcs., ketones, and esters on the silica gel and for aromatic compounds on active carbon from cyclohexane show that each functional group can be assumed to make its own contribution to the Henry coefficient K (K = nmsb), i.e., ln K = ln (nmsb) = Sniln (nmsb)i, where nms is the limiting adsorption, b is the adsorption coefficient, ni is the no. of functional group in a mol., and (nmsb)i is Henry coefficient of functional group i. The additive scheme can be used for determination of adsorption isotherms under the same conditions on the basis of the contributions to the Henry coefficient by individual functional groups and of the no. of groups in the mol.