苯在活性炭纤维上吸附等温线的测定及分析  

MEASUREMENT AND ANALYSIS OF ADSORPTION ISOTHERMS OF BENZENE ON ACTIVATED CARBON FIBRE

作　　者：胡祖美[1] 张艳[1] 王金渠[1] 王胜强[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116012

出　　处：《石油学报（石油加工）》2008年第4期484-487,共4页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：采用质量法在Cahn-2000高真空电子天平上测定了温度298～328K和压力O～1．5kPa条件下苯在活性炭纤维上的吸附等温线。用Langmuir方程处理实验数据，得到的吸附模型符合Langmuir模型，并根据吸附等温线用Clausius—Clapeyron方程计算出苯的等量吸附热。结果表明，苯的等量吸附热随着吸附量的增加而减小，由vant Hoff方程计算苯在活性炭纤维上的平均吸附热为39．79kJ/mol。Adsorption isotherms of benzene on activated carbon fibre were measured under 298-328 K and 0--1.995 kPa by gravimetric methods using a Cahn 2000 electrobalance. Experiment data were treated by Langmuir equation commendably to got an adsorption model fitting to Langmuir model. The isosteric adsorption heat of benzene was calculated by using Clausius-Clapeyron equation according to the adsorption isotherms. It was proved that the isosteric adsorption heat of benzene decreased with the increase of adsorption capacity. The average adsorption heat of benzene on activated carbon fibre was 39.79 kJ/mol calculated by vant Hoff equation.

关 键 词：苯 活性炭纤维 吸附 等温线 吸附热 

分 类 号：O643.36[理学—物理化学]