CAJ | 학술논문

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。
채용액상리자교환Cu、Ce리자제비료Cu（ I）－Y、Ce（ IV）－Y화Cu（ I）－Ce（ IV）－Y흡부제，이용XRD、BET등기술대흡부제진행료표정。통과정태실험고찰료제비조건대Cu（ I）－Ce（ IV）－Y흡부제탈류성능적영향，통과고정상실험연구료흡부제적천투류용，동시，재함새분여분병새분적정신완모의유중，분별가입갑분、배기희、필정배성신적모의유，탐구료흡부제적탈류선택성。결과표명，리자교환시간48 h，배소온도550℃，Cu／Ce물질적량비1∶1하제비적Cu（ I）－Ce（ IV）－Y흡부제구유괄의적탈류활성。재함갑분、배기희모의유중，Cu（ I）－Ce（ IV）－Y흡부제구유최호적탈류성능，상동농도적갑분、배기희화필정대각흡부제탈류성능적영향순서위필정＞배기희＞갑분。인입Cu＋가개선흡부제적탈류활성，인입Ce4＋가개선흡부제대류화물적선택성，Cu＋화Ce4＋적협동작용사Cu（ I）－Ce（ IV）－Y겸구유고적류용화항방경、희경능력。
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.