• 作者： Lin, K.S.; Fun, L.Y.; Chiang, A.S.T.
• 中文摘要： 鋇鍶離子交換之Y型沸石乃工業上分離二甲苯異構物之吸附材料。本研究測量此系統之氣固、液固平衡數據,並以非理想溶液理論分析之。發現對二甲苯之活性係數非常低。故建議此一系統仍應以Ruthven之統計理論計算為宜。
• 英文摘要： The adsorption of para, meta and ortho-xylenes on a commercial adsorbent for the PAREX process (Ba, Sr exchanged Y reolite) were studied both in liquid-solid and vapor-solid systems. The saturation capacity of this zeolite was much lower than the reported value of K-Y zeolite. The selectivity of para-xylene was also lower in K-Y zeolite. However, like the case of K-Y zeolite, the selectivity changed strongly with composition. Therefore, one must take the variable selectivity into consideration when modelling the PAREX process. The results indicated that para-xylene formed a highly non- ideal adsorption system with either ortho or meta xylene. If the equilibrium data were analyzed with the Real Adsorption Solution Theory (RAST), an unrealistically low activity coefficient would be obtained. The simplified statistical model of Ruthven might be a better approach to describe the adsorption in this system.
• 中文關鍵字： 沸石; 二甲苯; 吸附平衡; 活性係數; 鋇離子; 鍶離子
• 英文關鍵字： Zeolite; Xylene; Adsorption Equilibrium; Activity Coefficient; Barium Ion; Strontium Ion