MIL-101(Cr)在气体分离方面的应用

The Application of MIL-101(Cr)in Gas Separation

以金属有机框架材料MIL-101(Cr)作为气相色谱固定相,分别制作了毛细管柱和不锈钢填充柱,用来分离可燃气体。首先合成MIL-101(Cr),将该材料制成60~100目的颗粒,抽入2 m的不锈钢填充柱内,老化后接入气相色谱。在一定的条件下该色谱柱可以分离氮气、一氧化碳、甲烷、二氧化碳、乙烷、乙烯、乙炔,且出峰时间短,柱效与分离度都可以满足日常使用的需求。将合成的MIL-101(Cr)与二氯甲烷混合制成悬浊液,用动态涂渍法涂渍到一根15 m的毛细管柱内,老化色谱柱,然后接入气相色谱内,按照设定好的条件分离烃类。实验证明,该毛细管柱可以分离部分烃类。

A metal organic framework material MIL-101(Cr)was used as the stationary phase for gas chromatography,and capillary columns and stainless steel packed columns were made respectively to separate combustible gases.Firstly,MIL-101(Cr)was synthesized and made into 60~100 mesh particles,which were then pumped into a 2 m stainless steel filled column and then connected to gas chromatography after aging.Under certain conditions,the chromatographic column can separate nitrogen,carbon monoxide,methane,carbon dioxide,ethane,ethylene,and acetylene,the peak time is short,both column efficiency and separation can meet the needs of daily use.Mixed the synthesized MIL-101(Cr)with dichloromethane to form a suspension,applied it to a 15 m capillary column using dynamic coating method,aged the chromatographic column,and then connected it to gas chromatography to separate hydrocarbons according to the set conditions.Experimental results have shown that this capillary column can separate some hydrocarbons.