Cu(I)-Ce(IV)-Y吸附剂的制备及其脱硫性能研究  

Preparation of Cu(I)-Ce(IV)-Y adsorbent and its adsorptive desulfurization performance

作　　者：宋华[1] 高慧杰[1] 宋华林[2] 崔雪涵 万霞[1,4] 苑丹丹[1] 

机构地区：[1]东北石油大学石油与天然气化工省重点实验室,黑龙江大庆163318 [2]牡丹江医学院医学影像学院,黑龙江牡丹江157011 [3]中国石油大庆石化公司,黑龙江大庆163714 [4]CPE新疆石油勘察设计研究院(有限公司),新疆克拉玛依834000

出　　处：《燃料化学学报》2014年第12期1485-1492,共8页Journal of Fuel Chemistry and Technology

基　　金：黑龙江省自然基金(ZD201201)

摘　　要：采用液相离子交换Cu、Ce离子制备了Cu(I)-Y、Ce(IV)-Y和Cu(I)-Ce(IV)-Y吸附剂,利用XRD、BET等技术对吸附剂进行了表征。通过静态实验考察了制备条件对Cu(I)-Ce(IV)-Y吸附剂脱硫性能的影响,通过固定床实验研究了吸附剂的穿透硫容,同时,在含噻吩与苯并噻吩的正辛烷模拟油中,分别加入甲苯、环己烯、吡啶配成新的模拟油,探究了吸附剂的脱硫选择性。结果表明,离子交换时间48 h,焙烧温度550℃,Cu/Ce物质的量比1∶1下制备的Cu(I)-Ce(IV)-Y吸附剂具有适宜的脱硫活性。在含甲苯、环己烯模拟油中,Cu(I)-Ce(IV)-Y吸附剂具有最好的脱硫性能,相同浓度的甲苯、环己烯和吡啶对各吸附剂脱硫性能的影响顺序为吡啶>环己烯>甲苯。引入Cu+可改善吸附剂的脱硫活性,引入Ce4+可改善吸附剂对硫化物的选择性,Cu+和Ce4+的协同作用使Cu(I)-Ce(IV)-Y兼具有高的硫容和抗芳烃、烯烃能力。Cu（ I） Y, Ce（ IV）-Y an d Cu（ I）-Ce（ IV）-Y adsorbents were successfully prepared by liquid-phsa e ion-exchange of Y zeolites with combined Cu and Ce ions.The adsorbents were characterized by means of X-ray d iffratc ion （ XRD ） andN 2-adsorption specific surface area measurements （ BET ） .The effect ofp reparation oc nditoi ns on the adsopr tive desulfurization properties over Cu （ I ）-Ce （I V ）-Y were studied by a static ed sulfurization method.The breakthrough suluf r capacities fo the da sorbents weer stud ide in a fiex d-bde reactor system.Meanwhile, adsorptive desulfurization selectivities of the adsorbents were studied through model fuels, which made up of 1-octane solution of benzot hiophene and thiophene, then respectively mixed with a certain amount of toluene, cyclohexene or pyridine.The results indicate that the optimum preparation conditions of Cu（I）-Ce（IV）-Y is ion-exchange time of 48 h, Cu/Ce molar ratio of 1, and calcination temperature of 550℃. Cu（ I）-Ce（ IV）-Y adsorbent exhibited the best desulfurization performance with model fuels, which contain a certain amount of toluene and cyclohexene.The effect of toluene, cyclohexene and pyridine at the same concentration, on the metal ion-exchanged Y zeolites for sulfur removal is in the order：pyridine〉cyclohexene〉toluene.The introduction of Cu＋can improve the desulfurization activity of adsorbent, while the introduction of Ce4＋can improve the selectivity of adsorbent.The synergistic effect of Cu＋and Ce4＋contribute to Cu （ I）-Ce （ IV）-Y not only has the high sulfur adsorption capacity but also has the ability of resistance to aromatics and olefins.

关 键 词：Cu(I)-Ce(IV)-Y 制备 苯并噻吩 吸附脱硫 

分 类 号：TQ028[化学工程]