为高效分离CO₂，采用共混法制备了以PMDA-ODA型聚酰胺酸为前驱体、多级孔石墨碳（HPGC）为填料的混合基质炭膜。利用氮吸附对HPGC进行测试，探究了单一气体条件下HPGC的活化条件及其质量分数对混合基质炭膜分离性能的影响，结果表明，在活化时间为2 h、活化温度为800℃、KOH质量为1 g时，制备的HPGC掺杂混合基质炭膜表现出最优的气体分离性能。

In order to separate CO₂ efficiently,mixed matrix carbon membrane is prepared by a blending method with PMDA-ODA polyamic acid as precursor and hierarchical porous graphite carbon (HPGC) as filler.HPGC is tested by N₂ adsorption,the effects of the activation conditions and mass fraction of HPGC on the separation performance of mixed matrix carbon membrane are investigated under a single gas condition.It is shown that the mixed matrix carbon membrane shows the best gas separation performance when the used HPGC is prepared under the following conditions:the activation lasts for 2 h,the activation temperature remains at 800℃,and the mass of KOH is 1 g.

赵媛媛(1993-),女,硕士研究生,研究方向为碳分子筛膜的制备及气体分离,yuanyuanZ3507@163.com