燃料化学学报2016，Vol.44Issue(9)：1089-1098,10.
氨基功能化的金属有机框架与模型燃油中含氮化合物的结合作用
Combination of amino functionalized metal organic framework with nitrogenous compounds in model fuel
摘要
Abstract
The metal-organic frameworks, MIL-53 ( Al)-NH2 and MIL-53 ( Al) , were synthesized and used as the adsorbents for the removal of nitrogen-containing compounds ( quinoline and pyrrole) from model fuel. The adsorbents were characterized by X-ray diffraction ( XRD ) , scanning electron microscopy ( SEM ) , FT-IR spectroscopy, and thermogravimetric analysis. Compared with the adsorption capacity of MIL-53 ( Al) , MIL-53 ( Al) -NH2 possesses a higher adsorption capacity for quinoline and pyrrole in the model fuel due to the hydrogen bonding interaction between MIL-53(Al)-NH2 and the nitrogen-containing compounds. The factors affecting the adsorption capacity are the adsorptive time and temperature. Furthermore, the pseudo-first-order and pseudo-second-order adsorption kinetics models were tested. It is found that the pseudo-second-order kinetics model is preferable to characterize the adsorption process. The adsorption isotherms and adsorption thermodynamics of quinoline and pyrrole on the MIL-53(Al)-NH2 were also evaluated. The calculation of separation factor RL and thermodynamic parameters (△G0 ,△H0 和△S0 ) show that the adsorption of quinoline / pyrrole on the MIL-53 ( Al)-NH2 is a spontaneous and exothermic process. The used MIL-53 ( Al)-NH2 could be regenerated by simple solvent washing with ethanol and reused in the adsorption process.关键词
MIL-53(Al)-NH2/含氮化合物/吸附脱氮/模型燃油/氢键作用Key words
MIL-53 ( Al )-NH2/nitrogen-containing compounds/adsorptive denitrogenation/model fuel/hydrogen bonding interaction分类
能源科技引用本文复制引用
王蕾,赵新华,熊振湖,张金苗,李晨,武春生..氨基功能化的金属有机框架与模型燃油中含氮化合物的结合作用[J].燃料化学学报,2016,44(9):1089-1098,10.基金项目
The project was supported by the National Natural Science Foundation of China (50878138).国家自然科学基金(50878138)资助 （50878138）
