燃料化学学报2016，Vol.44Issue(12)：1509-1517,9.
制备方法对AgCeY吸附剂脱硫性能的影响
Effect of preparation method on desulfurization performance of AgCeY adsorbents
摘要
Abstract
The AgCeY-n adsorbents were successfully synthesized by microwave-assisted liquid ion exchange ( AgCeY-1 ) , hydrothermal ion exchange ( AgCeY-2 ) and liquid phase ion exchange ( AgCeY-3 ) methods with NaY (Si/Al ration=5. 3) molecular sieve parent and characterized by XRD, BET, XPS and Py-FTIR analysis. With thiophene ( TP ) and benzothiophene ( BT ) as the model sulfides, and toluene and cyclohexene as the competition components, the effects of the preparation method on the adsorptive desulfurization properties of the as-prepared adsorbents were evaluated. The results show that the Ag and Ce species in AgCeY-n zeolites exist as Ag+ and Ce4+. The AgCeY-1 prepared via microwave-assisted liquid ion exchange method possesses the highest Ag+ and Ce4+contents. In addition, it possesses the highest amounts of L and B acid. The adsorption selectivity to sulfur compounds follows the order: BT>TP. The effects of competition components on the sulfur removal with AgCeY-n zeolites follow the order: cyclohexene>toluene. Among the preparation methods tested, the microwave-assisted liquid ion exchange method takes the shortest time ( 20 min ) . The as-prepared AgCeY-1 adsorbent exhibits most satisfied performance of adsorption for all the model oils and a wonderful regeneration property. The removal ability for TP and BT of various adsorbents follows the order: AgCeY-1>AgCeY-2>AgCeY-3 .关键词
AgCeY/微波辅助/吸附脱硫/再生吸附/甲苯/环己烯Key words
AgCeY/microwave method/adsorptive desulfurization/regeneration/toluene/cyclohexene分类
化学化工引用本文复制引用
李晓娟,宋华,高慧杰..制备方法对AgCeY吸附剂脱硫性能的影响[J].燃料化学学报,2016,44(12):1509-1517,9.基金项目
The project was supported by the National Natural Science Foundation of China (21276048), the Natural Science Foundation of Heilongjiang Province of China (ZD201201) and the General Program of Education Department of Heilongjiang Province (12541060).国家自然科学基金(21276048),黑龙江省自然科学基金(ZD201201)和黑龙江省教育厅面上项目(12541060)资助 （21276048）
