2014 Fiscal Year Final Research Report
Development of zeolitic imidazolate framework membranes for advanced membrane separation
| Project/Area Number |
25790019
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanomaterials chemistry
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| Research Institution | Kansai University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
|
| Keywords | ゼオライト様イミダゾレート構造体 / 膜分離 / ガス分離 / 不均一核生成 / 配位競合 |
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| Outline of Final Research Achievements |
In this study, high-quality ZIF-8 membranes were successfully grown on the surface-modified porous supports by aqueous synthesis without the use of seed crystals. The advantage of using zinc acetate is that the acetate anions can inhibit not only the formation of zinc hydroxide byproducts but also the homogeneous nucleation. The competitive interaction between the coordination of constructing framework and zinc-acetate interaction by carboxylate functionality of acetate anions is essential to control heterogeneous nucleation and membrane growth. These ZIF-8 membranes show excellent gas permeation properties, strongly indicating a well-intergrown polycrystalline layer with enhanced microstructure. The seeding-free aqueous synthesis as proposed in this work can provide an improvement of membrane preparation reliability and a decrease in environmental load, providing potential for improving a scalable and commercializable process configuration for membrane preparation.
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| Free Research Field |
化学工学
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