【摘要】 吸附等温线是描述色谱分离中 ,组分在固定相、流动相两相之间平衡状态的物化参数 ,是色谱分离工艺设计和过程模拟研究中最基本的热力学信息 .准确测定吸附等温线 ,拟合出它的数学模型 ,进而模拟组分在固定相上的吸附和脱附情况 ,可大大减少实验次数 ,迅速找到最佳色谱操作条件 .采用静态法和吸附脱附法 ,测定木糖、木糖醇单、双组分在固定相上的吸附等温线 ,比较测定结果 ,确定吸附脱附法是准确测定等温线的简便方法 .更多还原

【Abstract】 Adsorption isotherm is a parameter to describe the equilibrium conditions of the components between the stationary phase and the mobile phase in chromatographic separation, and it is also the thermodynamics information of chromatographic separation process design and simulation study. Determining the isotherms accurately and fitting their mathematical models, we can simulate the situation of the components on the stationary phase with computer in order to reduce the experiments and find the best operation conditions easily. In this paper we determined the adsorption isotherms of xylose and xylitol in stationary phase with the static method and the adsorption desorption method. Comparing the isotherms, we found the adsorption desorption method was a simple and precise method.更多还原