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.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
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
关键词
载金属离子
噻吩
13X分子筛
动态吸附
穿透曲线
再生
loaded with metallic ions
thiophene
13X molecular sieve
dynamic adsorption
breakthrough curves
regeneration
