摘要
采用静态重量吸附法,研究了4种活性炭样品分别在30,40,50,60℃下对CS2气体的等温吸附行为,并利用多种模型方程对数据进行了回归、数理统计的检验,微分吸附热的求取以及相关参数的讨论.结果显示:Freundlich等温线是描述活性炭吸附CS2的最佳模型方程,活性炭吸附剂的比表面积和微孔容积是影响CS2吸附量大小的主要因素,吸附热数据还表明,活性炭吸附CS2为物理吸附且吸附热随吸附量的增加呈对数下降.
The static state weight-adsorption method was used for studying the isothermal adsorption for CS_(2 )at 30,40,50 and 60℃on the four kinds of activated carbon. Several adsorption models proposed by Langmuir,Freundlich,Langmuir-Freundlich, Temkin,BET and D-R equation were used to account for the observed adsorption behavior. All these models were regressed by using the least square method and examined by mathematical statistics. Freundlich equation was found to reasonably describe the behavior for adsorbing CS_(2 ). The specific surface area and micropore volume of activated carbon could be regarded as two major factors for CS_(2) adsorption. Adsorption heat showed that adsorption of CS_(2) is mainly physical adsorption, and adsorption heat have logarithmic decrement with the increase of adsorption quantity.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2004年第3期354-358,共5页
Journal of China Coal Society
关键词
活性炭
二硫化碳
吸附等温线
吸附模型方程
activated carbon
carbon disulfide
adsorption isotherm
adsorption models
