金属有机骨架结构MIL-101的合成及其吸附脱硫的工艺研究  

Synthesis of metal-organic frameworks MIL-101 and desulfurization by adsorption

作　　者：田晓光[1] 李永超[1] 侯俊琦[1] 卞婉莹[1] 田世超[1] 辛春玲[1] 赵雪勤[1] 尹延超[1] 连丕勇[1] 

机构地区：[1]辽宁石油化工大学化学与材料学院,辽宁抚顺113001

出　　处：《化工科技》2012年第5期19-23,共5页Science & Technology in Chemical Industry

基　　金：国家自然科学基金资助项目(29792070)

摘　　要：采用水热合成方法合成金属有机骨架化合物MIL-101,利用X射线粉末衍射(XRD),对其产品表征,并研究提高合成产率的影响因素;以MIL-101做为吸附剂,研究吸附脱除汽油模型油中噻吩的最佳工艺条件。实验结果表明,晶化时间提高到10h,pH值为1.5时,MIL-101的合成产率达到60%,产率比文献值提高10%;在空速150h-1,MIL-101质量为0.075g,噻吩质量分数为1×10-3时,噻吩在正辛烷中的穿透容量为0.69%,饱和吸附量为4.62%;MIL-101和4A分子筛分层装柱,并利用N2在100℃对床层进行活化处理,消除了溶解水对吸附脱硫过程的影响;以甲苯为脱附剂,在100℃,空速为100h-1对吸附剂进行再生处理,再生率为96.38%。MIL-101 was obtained by hydrotbermal synthesis, the sample of MIL-101 was characterized by X-Ray Powder Diffraction（XRD）. We studied improving the influencing factors of the yield and studied the the optimum conditions for adsorption of thiophene from the petrol model oil. The experi- mental results showed that the crystallization time increases from 8 h to 10 h,the pH is 1.5,the yield reaches to 60% from 50%. The breakthrough capacity of thiophene in n-octane reaches to 0. 690% and the adsorption saturation capactity is 4. 62% when the space velocity is 150 h t, the quality of MIL- l01 is 0. 075 and the concentration of thiophene is 1 000 ppm. The MII,-101 and the 4A molecular sieve were packed layered,and were actived in N2 atmosphere at 100 ℃,to eliminate the influence of dis- solved water in the process of desulfurization. Regeneration of MIL-101 was performed by flowing dry toluene through 100 ℃ packed bed at 150 h 1 ,the regeneration rate was 96. 38%.

关 键 词：金属有机骨架结构 汽油 吸附 脱硫 脱附 

分 类 号：TQ624.5[化学工程—精细化工]