文献类型：期刊文献

中文题名：比表面积和孔径分布测定与计算方法的改进

英文题名：Improvements of Determination and Calculation of Specific Surface Area and Pore Distribution

作者：关岳[1];孙钦廉[1];邬行彦[1];卢珊[1];陈虹[1]

机构：[1]华东化工学院生化工程系

年份：1990

卷号：48

期号：5

起止页码：424

中文期刊名：化学学报

外文期刊名：Acta Chimica Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：比表面积;孔径分布;计算;吸附剂

摘要：本文比较了BET多层吸附模型,Pickett有限层吸附模型以及Dubinin微孔填充模型,并在此基础上,假定多层吸附和微孔填充两种过程同时发生,导出一个修正的吸附方程式,并说明修正后的方程具有较大的适用性和准确性.在孔径分布的测定中,用H_2替代He作为载气,大大降低测定成本.应用微机实现数据运算过程微机化和结果的图谱化,大大缩短处理时间.
A comparison among BET adsorption equation, Piekett adsorption equation and Duhinin micropore filling equation has been made. Based on the assumption that multilayer adsorption and micropore filling occur simultaneously, a modified adsorption equation has been derived. Comparison with experimental data have shown that the modified equation is more accurate and is applieable in a wider range of pore radii. The cost of determination of pore distribution can be greatly lowered by using hydrogen instead of helium as the carrier gas and the processing time remarkably reduced with the help of a computer.