화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2019년 봄 (04/24 ~ 04/26, 제주국제컨벤션센터)
권호 25권 1호, p.271
발표분야 분리기술(Separation Technology)
제목 Zeolitic Imidazolate Framework ZIF-8 Films with Controllable Microstructures Prepared via ZnO to ZIF-8 Conversion and Their Usage as Seed Layers for Propylene-selective ZIF-8 Membranes
초록 Supported ZIF-8 films with varying microstructures were manufactured by ZnO to ZIF-8 conversion reaction in a 2-methylimidazole solution. Manipulation of conversion parameters such as solvents and their combinations controlled the grain size and continuity of the film (fig. 1). The ZIF-8 films with varying microstructures were used as seed layers to synthesize propylene-selective ZIF-8 membranes (fig. 1). The propylene/propane separation performances of the membranes were greatly affected by the microstructures of the seed layers. Non-continuous seed layers covered with compactly packed ZIF-8 nanocrystals tended to yield membranes with improved grain boundary structure compared to those grown from continuous seed layers with a larger grain size. The membranes were mechanically stronger than those grown from conventional seed layers, which were obtained by dip-coating ZIF-8 nanocrystals on substrates, likely due to the presence of mechanical interlocks between the membranes and porous substrate network.
저자 이정희1, 김동휘1, 권혁택1, 유성종2, 김진수1
소속 1경희대, 2한국과학기술(연)
키워드 가스분리; 막분리
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