CAJ | 학술논문

采用离子交换法制备 Cu2＋和 Ce4＋同时改性的 Cu（Ⅱ）-Ce（Ⅳ）？13X 分子筛吸附剂，同时制备单一金属离子 Cu2＋改性的 Cu（Ⅱ）？13X 和 Ce4＋改性的 Ce（Ⅳ）？13X。采用 X 射线粉末衍射（XRD）、氮气吸附-脱附等手段对吸附剂进行表征。将碳四烃中的典型硫化物二甲基二硫化物、甲硫醚、叔丁硫醇溶于正庚烷中进行吸附脱硫研究。结果表明：与未改性的13X 分子筛相比，Cu2＋和 Ce4＋改性的 Cu（Ⅱ）-Ce（Ⅳ）？13X 分子筛的比表面积和孔体积有所降低，平均孔径和介孔数量增加，由于两种金属的协同作用，使得 Cu（Ⅱ）-Ce（Ⅳ）？13X 表现出更好的脱硫性能；Cu（Ⅱ）-Ce（Ⅳ）？13X 吸附剂对二甲基二硫化物、甲硫醚、叔丁硫醇的脱除效率均高于单一金属改性后的 Ce（Ⅳ）？13X 和 Cu（Ⅱ）？13X 吸附剂；Cu（Ⅱ）-Ce（Ⅳ）？13X 吸附剂具有良好的再生性能，第1次再生后脱硫率为新鲜吸附剂的98％。
채용리자교환법제비 Cu2＋화 Ce4＋동시개성적 Cu（Ⅱ）-Ce（Ⅳ）？13X 분자사흡부제，동시제비단일금속리자 Cu2＋개성적 Cu（Ⅱ）？13X 화 Ce4＋개성적 Ce（Ⅳ）？13X。채용 X 사선분말연사（XRD）、담기흡부-탈부등수단대흡부제진행표정。장탄사경중적전형류화물이갑기이류화물、갑류미、숙정류순용우정경완중진행흡부탈류연구。결과표명：여미개성적13X 분자사상비，Cu2＋화 Ce4＋개성적 Cu（Ⅱ）-Ce（Ⅳ）？13X 분자사적비표면적화공체적유소강저，평균공경화개공수량증가，유우량충금속적협동작용，사득 Cu（Ⅱ）-Ce（Ⅳ）？13X 표현출경호적탈류성능；Cu（Ⅱ）-Ce（Ⅳ）？13X 흡부제대이갑기이류화물、갑류미、숙정류순적탈제효솔균고우단일금속개성후적 Ce（Ⅳ）？13X 화 Cu（Ⅱ）？13X 흡부제；Cu（Ⅱ）-Ce（Ⅳ）？13X 흡부제구유량호적재생성능，제1차재생후탈류솔위신선흡부제적98％。
Desulfurization adsorbents of Cu(Ⅱ)-Ce(Ⅳ)bimetal ion-exchanged 13X zeolites,and Cu(Ⅱ)ion-exchanged and Ce(Ⅳ)ion-exchanged 13X were prepared,respectively. The prepared adsor-bents were characterized by XRD and N2 adsorption-desorption. Desulfurization performance of the des-ulfurization adsorbents for dimethyl disulfide,dimethyl sulfide,and tert-butyl mercaptan was investiga-ted. The results indicate that compared with results of the adsorbents before modification the specific surface area and total pore volume of the prepared desulfurization adsorbents decrease,while the average pore diameter and the number of mesopore increase. The Cu(Ⅱ)-Ce(Ⅳ)bimetal ion-exchanged 13X ze-olites exhibit good desulfurization performance,better than the results of single metal-exchanged adsor-bents Cu(Ⅱ)?13X and Ce(Ⅳ)?13X,due to the synergistic effect between the two cations. Regeneration performance of spent desulfurization adsorbents was investigated and the results demonstrate that the regenerated adsorbents have a perfect desulfurization performance,and the desulfurization rate of the adsorbents after first regeneration is 98% of the fresh adsorbents.