期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 155, 期 -, 页码 90-98出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2012.01.010
关键词
Metal-organic frameworks; MIL-96 membrane; Formation mechanism; Reactive seeding
类别
资金
- National Basic Research Program of China [2009CB623406]
- National Natural Science Foundation of China [20990222, 21006047, 21176115]
- China Postdoctoral Science Foundation [201003581]
Metal-organic framework (MOF) membranes have attracted great attention for their potential applications in gas and liquid separations. Recently, we have developed a novel reactive seeding (RS) method for the synthesis of MOF membranes, such as MIL-53 and MIL-96 membranes, on porous inorganic supports. By the RS method, a homogeneous seeding layer well bonding with the support could be formed for the secondary hydrothermal synthesis of high-quality MOF membranes. Our previous study demonstrated the RS approach was of versatility. However, the formation mechanism of MOF membranes derived from RS approach is unclear. In this work, taking MIL-96 as an example, we investigated the interactions between support and organic precursor and the differences between in situ synthesis and RS route. A formation mechanism of RS method was proposed. Based on the mechanism, the alpha-Al2O3 firstly reacted with H2O to produce gamma-AlO(OH), and then the gamma-AlO(OH) interacted with H(3)btc to form the MIL-96 seed crystals. (C) 2012 Elsevier Inc. All rights reserved.
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