温度影响下的气固吸附相平衡及其数据处理方法  

Gas-Solid Adsorption Equilibria Under Temperature Influence and Their Data Processing Method

作　　者：曾嵘[1] 谢波[1] 关建郁[1] 

机构地区：[1]华南理工大学化学工程研究所,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2002年第2期52-55,共4页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目 ( 2 98760 11)

摘　　要：采用双柱定容容量法分别测定了O2 和N2 在 13X分子筛上的吸附等温线 ,其实验温度为 2 0～ 4 0℃ ,平衡压力为 2× 10 5～ 1× 10 6 Pa .在整个温度范围内曲线拟合出Langmuir吸附等温方程的常数 .通过Young方程关联实验范围内吸附相平衡数据 ,得出O2 和N2 的吸附热分别为 10 .13kJ/mol和 12 .68kJ/mol.用理想吸附溶液理论探讨O2 和N2 混合物的竞争吸附平衡特性 ,并将离散数据拟合出以分压。The adsorption isotherms of both O 2 and N 2 on 13X molecular sieve at temperatures from 20℃ to 40℃ and at pressures from 2 ×10 5 Pa to 1 ×10 6 Pa were measured respectively by the two_vessel volumetric method. The constants of Langmuir isotherms are fitted very well over the whole temperature scope. The heats of adsorption of O 2 and N 2, 10.13 and 12.68 kJ/mol, are calculated by relating Young equation with the equilibrium data of the experimental range. The competitive adsorption equilibrium characteristic of O 2 and N 2 mixture is discussed by the ideal adsorbed solution theory (IAST), and the scattered data were sorted out with binary adsorption isotherms containing independent variables of temperature and partial pressures.

关 键 词：吸附等温线 容量法 13X分子筛 氧气 氮气 吸附相平衡 吸附热 气体吸附 

分 类 号：O647.313[理学—物理化学] O642.42[理学—化学]