Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 529, Issue -, Pages 105-113Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2016.12.068
Keywords
Zeolitic-imidazolate frameworks; Gas separation; Membranes; Defects; Long-term stability
Categories
Funding
- National Science Foundation [CBET-1510530, DBI-0116835]
- Qatar National Research Fund [NPRP 7-042-2-021]
- R&D Convergence Program of MSIP (Ministry of Science, ICT and Future Planning)
- NST (National Research Council of Science & Technology) of the Republic of Korea [CRC-14-1-KRICT]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1510530] Funding Source: National Science Foundation
Ask authors/readers for more resources
Membranes of ZIF-8, a prototypical zeolitic-imidazolate framework (ZIF) with a sodalite topology, have shown excellent propylene/propane separation performances based on molecular sieving mechanism. Although the long-term stability of ZIF-8 membranes is of critical importance for their practical applications, there are only a few studies reported on the subject. Here, we report the long-term binary propylene/propane performances of ZIF-8 membranes prepared by two distinctive synthesis methods. A series of characterizations was employed to explain how different synthetic protocols led to the formation of ZIF-8 membranes with different bulk defect densities and surface defects, thereby affecting the long-term membrane stability. Finally, a post-synthetic ligand treatment is proposed as an effective means to mitigate the defects of ZIF-8 membranes, resulting in improved long-term separation performances.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available