对、邻二氯苯的液相吸附平衡

• 作 者: 林彬 胡国良 王艳华 李栋林
• 机 构: 沈阳化工学院
• 出 处: 沈阳化工学院学报
• 发表日期: 1998年04期
• 关键词: 对二氯苯 模型表示 吸附平衡 吸附等温线 邻二氯苯 非理想 吸附体系 混合液 组分浓度 亨利定律

研究了国产改性的３种ＺＳＭ５分子筛从二氯苯异构体混合液中选择吸附对二氯苯的平衡规律．结果表明，３种分子筛对对二氯苯的选择吸附能力为ＨＺＳＭ５＞ＦｅＺＳＭ５＞ＬｉＺＳＭ５，对、邻位ＤＣＢ单组分的吸附等温线均可用Ｌａｎｇｍｕｉｒ模型表示，而ＤＣＢ双组分混合液的吸附等温线却不能用Ｌａｎｇｍｕｉｒ模型表示，作为非理想吸附体系，其非理想吸附程度可用活度系数来表征．

The equilibrium regularities of selective adsorption of p-dichlorobenzene from three kinds of modified ZSM5 zeolites from dichlorobenzene isomers were studied. The results showed that the selective adsorption of p-Dichlorobenzene by three kinds of molecular sieves was HZSM5> FeZSM5> LiZSM5. The adsorption isotherms of the ortho-DCB single-component were all expressed by Langmuir model, The mixed isotherm can not be expressed by Langmuir model. As non-ideal adsorption system, the degree of non-ideal adsorption can be characterized by activity coefficient.