金属有机骨架材料Zr-FUM的低碳烃分离性能  

Research on Metal-Organic Framework Zr-FUM for Light Hydrocarbon Separation

作　　者：王小青[1] 李立博[1] 陈杨[1] 王勇[1] 李晋平[1] 

机构地区：[1]太原理工大学化学化工学院精细化工研究所,太原030024

出　　处：《太原理工大学学报》2017年第3期310-316,共7页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金青年项目(21606163);山西省自然科学基金青年项目(201601D021042)

摘　　要：选取高稳定金属有机骨架材料(metal-organic frameworks material,MOF)Zr-FUM作为吸附剂,测试了纯气体CH_4,C_2H_6,C_2H_4,C_2H_2,C_3H_8和C_3H_6的吸附性能;通过单组分的吸附数据,计算了吸附热和吸附选择性;采用变压吸附分离装置对等体积比的CH_4/C_2H_6,C_2H_6/C_3H_8,C_2H_2/C_2H_4及C_2H_4/C_3H_6等4组较难分离的混合气体进行了穿透测试,以考察低碳烃混合气体的分离性能;最后,系统地测试了Zr-FUM的稳定性和循环性能。结果表明:Zr-FUM对这4组混合气体的穿透时间差分别为8,10,5,11min,表现出较好的低碳烃分离能力;在机械压力2 MPa、温度100℃以及水蒸气环境中停留36h时,Zr-FUM结构仍未遭到破坏,有着很好的稳定性;经10次循环分离实验后,Zr-FUM仍然能保持稳定的分离能力,显示出较长的循环寿命。A highly stable MOF-based adsorbent Zr-FUM was selected to separate CH_4/C_2H_6,C_2H_6/C_3H_8,C_2H_2/C_2H_4 and C_2H_4/C_3H_6 gas mixtures,which have difficulty in their separation.Adsorption heat and adsorption selectivities were calculated based on the single-component adsorption isotherms.Combined with swing adsorption separation device,the separation performance of light hydrocarbons was investigated.Finally,the stability and cycling performance of Zr-FUM were systematically tested.The results show that,Zr-FUM exhibits excellent separation performance of light hydrocarbons,with the breakthrough time 8,10,5,11 min for the 4groups of gas mixtures above;Zr-FUM exhibits good stability,for the structure of Zr-FUM could not be destroyed under the mechanical pressure of 2MPa,temperature of 100 ℃,and water vapor environment with 36h;Zr-FUM exhibits good regenerability for the breakthrough profiles were well retained after 10 cycles of gas mixture separation.

关 键 词：低碳烃 气体分离 吸附剂 金属有机骨架材料 穿透实验 

分 类 号：TQ028.1[化学工程]