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%.
出处
《化工科技》
CAS
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)
关键词
金属有机骨架结构
汽油
吸附
脱硫
脱附
Metal-organic Frameworks Gasoline
Adsorptiom Desulfurization
Desorption
