Molecular sieve for adsorbing and separating ethylene/ethane as well as preparation method and use method of molecular sieve

The invention discloses a molecular sieve for adsorbing and separating ethylene and ethane and a preparation method thereof. The molecular sieve is an RHO configuration molecular sieve with an eight-membered ring structure. The preparation method of the molecular sieve comprises the following steps: calcining an ion exchange product of silver salt and an RHO molecular sieve to obtain the Ag-RHO molecular sieve, the problem that an existing adsorbent for separating C2H4/C2H6 is not ideal in selectivity is solved, and powerful technical guarantee is provided for effective recycling of ethylene resources. 本发明公开了一种吸附分离乙烯与乙烷的分子筛及制备方法，所述分子筛是具有八元环结构的RHO构型分子筛；所述分子筛的制备方法，包括煅烧处理银盐与RHO分子筛的离子交换产物以得到所述Ag-RHO分子筛；解决现有分离C2H4/C2H6的吸附剂选择性不理想的问题，为乙烯资源的有效回收利用提供有力的技术保障。