载金属离子的13X分子筛吸附噻吩的动态特性  

Dynamic Characteristics of Thiophene Adsorption Adsorbed on 13X Loaded with Metallic Ions

作　　者：居沈贵[1] 闫武敏[1] 曾勇平[1] 

机构地区：[1]南京工业大学化学化工学院,江苏南京210009

出　　处：《高校化学工程学报》2007年第1期159-162,共4页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(20436030);江苏省重点实验室开放课题(KJS03017)资助项目

摘　　要：采用13X分子筛及负载Cu2+、Zn2+、Ni2+、Ag+的13X分子筛等五种吸附剂,对噻吩进行动态吸附特性研究。在Φ10.5mm×200mm的吸附柱测定了五种吸附剂吸附正己烷溶液中的噻吩的穿透曲线。采用加热法对Zn2+-13X、Ni2+-13X、Ag+-13X三种吸附剂进行再生,测定了再生后吸附剂的穿透曲线,对吸附剂再生前后的吸附性能进行了比较。结果表明Ag+-13X吸附性能优于其它吸附剂,其对噻吩的吸附容量为60.20mg·g-1。再生后的Ag+-13X对噻吩仍有很好的吸附能力,吸附容量相比新鲜吸附剂的仅下降了5%。穿透点以前出口噻吩含量为0。这些结果为工业吸附装置的设计提供了必要的吸附数据。The adsorbents of 13X loaded with Cu^2＋. Zn^2＋. Ni^2＋. Ag^＋ separately were prepared, and the dynamic characteristics of thiophene absorption on the adsorbents prepared and 13X were studied. The breakthrough curves of thiophene were measured by using a column （Ф10.5 mm×200 mm） filled with 13X and 13X loaded with Cu^2＋. Zn^2＋. Ni^2＋. Ag^＋, respectively. The used adsorbents of Zn^2＋-13X, Ni^2＋-13X and Ag^＋-13X were regenerated by heating method and the breakthrough curves of thiophene on those regenerated adsorbents were also measured. The results show that the Ag^＋-13X is the better one since its adsorption amount of thiophene is 60.20 mg·g^-1 which is the largest among those adsorbents mentioned above, and after regeneration of the used Ag^＋-13X, the concentration of thiophene in the exiting liquid of the fixed bed can still maintain 0 ppm before breakthrough like the fresh Ag^＋-13X does, and the adsorption amount of thiophene of the regenerated Ag^＋-13X decreases only 5 percent, which is also the least between those adsorbents mentioned above. This study provides necessary data for the design of the thiophene adsorption equipments used in industry.

关 键 词：载金属离子 噻吩 13X分子筛 动态吸附 穿透曲线 再生 

分 类 号：TQ028.3[化学工程] TQ424.25