炼厂干气通常作为燃料使用或放火炬烧掉，造成严重的资源浪费和环境污染，回收干气中的乙烯资源十分必要。本项目针对传统吸附剂分离乙烯/乙烷选择性不高的问题，提出通过构筑柔性MOFs并引入Cu(I)，Ag(I)等基团，与乙烯形成π络合作用，以提升柔性MOFs对乙烯的吸附强度，降低乙烯开口压力。通过将柔性MOFs的开口压力与π络合作用有机结合的思路，实现炼厂干气中乙烯的高效回收。本项目的实施以期为乙烯/乙烷的高效分离找出一条新途径，进一步拓展MOFs的工业应用。

Refinery gas is usually burned as fuel or burned torch, resulting in the serious waste of ethylene resources and environmental pollution, recovery of ethylene from refinery gas is necessary. Due to the low selective separation of ethylene/ethane in refinery gas for traditional adsorbents, Cu(I), Ag(I) or other groups will be introduced into flexible MOFs to form π-complexation with ethylene, thereby, enhancing the adsorption strength and reducing the gate-opening pressure of ethylene in this project. The high recovery efficiency of ethylene from refinery gas will be achieved by organically combining gate-opening pressure and π-complexation of flexible MOFs. The implementation of this project will find a new way for the efficient separation of ethylene/ethane in refinery gas, and further, expand the industrial application of MOFs.