改进的ZLC数据处理法──计算芳烃在ZSM-5晶内扩散系数  

DIFFUSION OF AROMATIC HYDROCARBON IN ZSM-5 CALCULATED BY IMPROVED DATA TREATMENT OF ZERO LENGTH COLUMN METHOD

作　　者：韩明汉[1] 尹秀艳 金涌[1] 陈曙[2] 张吉瑞[2] 

机构地区：[1]清华大学化学工程系,北京100084 [2]北京服装学院化工研究所,北京100029

出　　处：《化工学报》2000年第1期126-129,共4页CIESC Journal

摘　　要：Intracrystalline diffusivities for aromatic carbon in ZSM 5 were measured by ZLC method. Experiments were analyzed by two traditional methods (LT method and ST method) and a new full range method. The traditional mathematical description of the ZLC technique by LT method or ST method will cause deviation unavoidably. The new full range method avoids the problems caused by the traditional methods, so it is more suitable to analying ZLC experiments. Diffusion coefficients calculated by FR method are greater than those by LT method, but smaller than by ST method.Intracrystalline diffusivities for aromatic carbon in ZSM 5 were measured by ZLC method. Experiments were analyzed by two traditional methods (LT method and ST method) and a new full range method. The traditional mathematical description of the ZLC technique by LT method or ST method will cause deviation unavoidably. The new full range method avoids the problems caused by the traditional methods, so it is more suitable to analying ZLC experiments. Diffusion coefficients calculated by FR method are greater than those by LT method, but smaller than by ST method.

关 键 词：晶内扩散 ZSM-5 芳烃ZLC 数据处理法 分子筛 

分 类 号：TQ021.4[化学工程] O658.62[理学—分析化学]