Comparison of three methods to predict adsorption isotherms for organic vapors from similar polarity and nonsimilar polarity reference vapors
Comparison of three methods to predict adsorption isotherms for organic vapors from similar polarity and nonsimilar polarity reference vapors
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相似极性和非相似极性参考蒸气预测有机蒸气吸附等温线的三种方法的比较
DOI：
10.1016/0008-6223(89)90129-2
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发表时间：
1989
期刊：
影响因子：
10.9
通讯作者：
ting Shen
中科院分区：
文献类型：
--
作者：
K. Noll;Dahui Wang;ting Shen
在该分析中，使用Polanyi-Dubinin方程预测25 °C下八种有机蒸气和25°C、40°C和60°C下两种有机蒸气在活性炭上的吸附等温线。基于非极性和极性参比蒸汽，通过三种方法（摩尔体积、分子降落伞和电子极化）计算理论亲和系数β。用重量法测定了相应的实验等温线数据。计算值与实验值的比较表明，1。(1)对于最佳等温线预测，参考蒸汽应该具有与预测其吸附的蒸汽相似的极性。(2)在选择了一个合适的参考蒸汽后，这三种方法预测等温线的准确性基本上没有差别。(3)摩尔体积法更适用于预测不同温度下的等温线。
The Polanyi-Dubinin equation was used to predict adsorption isotherms for eight organic vapors at 25°C and for two organic vapors at 25°C, 40°C and 60°C on activated carbon in this analysis. The theoretical affinity coefficient, β, is calculated by three methods (molar volume, molecular parachor, and electronic polarization) based on nonpolar and polar reference vapors. The corresponding experimental isotherm data were measured by gravimetric method. Comparison between calculated and experimental isotherm data showed that1.(1) for optimum isotherm prediction, the reference vapor should have similar polarity to the vapor whose adsorption is being predicted,2.(2) after choosing an appropriate reference vapor, there is essentially no difference in the accuracy of the isotherm predictions by the three methods, and3.(3) the molar volume method is more applicable for predicting isotherms at different temperatures.