Recently, the Co-ZIF-8 molecular sieve has emerged as an excellent substitute for the ZIF-8 counterpart due to its potentially high C3H6/C3H8 separation performance. Here, for the first time, we investigated the effect of ZIF-67 molecular sieves in mixed matrix membranes (MMMs) for C3H6/C3H8 separations by integrating them into 6FDA-DAM polymeric matrix[1]. Our current work demonstrated the superior C3H6/C3H8 separation performance of 6FDA-DAM/ZIF-67 MMMs, which was achieved mainly by the excellent size-based energetic selectivity of Co-ZIF-8 molecular sieves. Also, Co-ZIF-8 containing MMMs exhibited excellent physical aging resistance, further ensuring its potential application of the industrial C3H6/C3H8 separations.

• 이종석(화공생명공학부, 서강대학교) | Jong Suk Lee