The sorption and diffusion of methanol and ethanol on Amberlyst 15 were studied by the quartz crystal microbalance technique in the temperature range of 20-120°C at relative pressure p/ps < 0.04. The heats of sorption (∆H) and the activation energy of diffusion (Ea) of methanol and ethanol were determined from the temperature dependence of the Henry constant and the effective diffusion coefficient of the alcohols in the gel phase of Amberlyst 15. The proximity of the ∆H and Ea values for each of the sorbates indicates that mass transfer within the Amberlyst 15 gel phase takes place by a sorption–desorption mechanism.

中文翻译：

---

甲醇和乙醇在大孔磺酸树脂 Amberlyst 15 中的吸附和扩散

在 20-120°C 的温度范围内，相对压力 p/ps < 0.04，通过石英晶体微量天平技术研究了甲醇和乙醇在 Amberlyst 15 上的吸附和扩散。甲醇和乙醇的吸附热 (ΔH) 和扩散活化能 (Ea) 由亨利常数的温度依赖性和 Amberlyst 15 凝胶相中醇的有效扩散系数确定。每种吸附物的 ∆H 和 Ea 值表明 Amberlyst 15 凝胶相内的传质是通过吸附-解吸机制发生的。