镧掺杂二氧化钛/沸石吸附对氨基酚的性能研究  

Adsorption of p-aminophenol with La^(3+)-TiO_2-zeolite

作　　者：周晓[1] 李析蒨[2] 吴楠[3] 卢利军[1] 田秀娟[2] 芦春梅[1] 胡婷婷[1] 

机构地区：[1]吉林出入境检验检疫局,吉林长春130062 [2]吉林大学中日联谊医院,吉林长春130033 [3]空军航空大学卫生处,吉林长春130012

出　　处：《化学试剂》2012年第8期733-736,共4页Chemical Reagents

摘　　要：以镧掺杂二氧化钛/沸石(La3+-TiO2/沸石)及沸石作为吸附剂,研究了两者吸附对氨基酚的性能。采用可见分光光度法,考察了吸附时间、吸附剂用量、对氨基酚浓度及温度等实验条件对吸附效率的影响。在吸附时间2 h、吸附剂用量0.02 g、对氨基酚初始浓度0.5 mg/L、实验温度20℃的条件下,La3+-TiO2/沸石吸附对氨基酚的能力明显优于未处理的沸石。对氨基酚在两种吸附剂上的吸附均符合准二级动力学模型。吸附过程为吸热过程,吸附等温线复合Langmuir和Freundlich方程。The adsorption of p-aminophenol （PAP） with La3＋ -TiO2/zeolite and zeolite has been studied. The effects of experimental parameters such as adsorption time, adsorbent dose, PAP concentration, and temperature on the adsorption efficiency have been investigated. The adsorption capacity of PAP with La3＋ -TiO2/zeolite is evidently larger than that with untreated zeolite under the conditions of adsorption time 2 h, adsorbent dose 0.02 g, PAP concentration 0. 5 mg/L, and temperature 20℃ The adsorption of PAP with both of the ad- sorbents follows the pseudo-second-order kinetics model. The adsorption process is an endothermic one, and the adsorption data can be fitted with both Langmuir and Freundlich iso- therm models.

关 键 词：镧掺杂二氧化钛/沸石 对氨基酚 吸附 

分 类 号：O614[理学—无机化学]