制备方法对AgCeY吸附剂脱硫性能的影响

发布时间：2018-04-02 20:03

  本文选题：AgCeY　切入点：微波辅助　出处：《燃料化学学报》2016年12期

【摘要】：以硅铝比为5.3的NaY分子筛为母体,分别采用微波辅助离子交换法(AgCeY-1)、水热离子交换法(AgCeY-2)和液相离子交换法(AgCeY-3)制备了AgCeY-n吸附剂,并利用XRD、BET、XPS和Py-FTIR对吸附剂进行了表征。以噻吩和苯并噻吩为模型硫化物,甲苯和环己烯为竞争吸附组分,考察了制备方法对制备得到的吸附剂脱硫性能的影响。结果表明,AgCeY-n吸附剂上Ag、Ce元素分别以Ag~+、Ce~(4+)形式存在。经微波辅助离子交换法制备得到的AgCeY-1吸附剂表面Ag~+、Ce~(4+)含量均最高,且具有最高的L酸和B酸量。AgCeY-n吸附剂对硫化物的吸附选择大小顺序为:BTTP,竞争吸附组分对AgCeY-n吸附脱硫性能的影响顺序为:环己烯甲苯。在所研究的制备方法中,微波辅助离子交换法所需时间最短(20 min),合成的AgCeY-1对所研究的模拟油的吸附效果均最好,且具有较好的重复使用性能。各吸附剂对TP和BT的脱除能力大小顺序为:AgCeY-1AgCeY-2AgCeY-3。
[Abstract]:The Si / Al ratio NaY 5.3 molecular sieve as precursor, respectively by microwave assisted ion exchange method (AgCeY-1), ion exchange method (AgCeY-2) and liquid phase ion exchange (AgCeY-3) AgCeY-n adsorbent was prepared, and the use of XRD, BET, the adsorbents were characterized by XPS and Py-FTIR. Thiophene and dibenzothiophene as a model compound, toluene and cyclohexene as the competitive adsorption of components, the effects of preparation methods on the prepared adsorbent for desulfurization performance. The results show that the AgCeY-n adsorption on Ag, Ce elements were Ag~+, Ce~ (4+) form was prepared by the AgCeY-1. The adsorbent surface Ag~+ by microwave assisted ion exchange, Ce~ (4+) content were the highest, and has the highest L acid and B acid.AgCeY-n adsorption sulfide on the choice of the size order is: BTTP, the competitive adsorption of the components on the AgCeY-n adsorption desulfurization performance influence order of Cyclohexene in toluene. To study the preparation method in the shortest time required for microwave assisted ion exchange method (20 min), the synthesis of AgCeY-1 adsorption effect of simulated oil research are the best, and has good reusability. The adsorption of TP and BT removal capacity order: AgCeY-1AgCeY-2AgCeY-3.

【作者单位】： 东北石油大学化学化工学院;东北石油大学石油与天然气化工省重点实验室;
【基金】：国家自然科学基金(21276048) 黑龙江省自然科学基金(ZD201201) 黑龙江省教育厅面上项目(12541060)资助~~
【分类号】：TE624.55;TQ424
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本文编号：1701897