期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 20, 期 19, 页码 3938-3943出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b924536g
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资金
- CONACYT
- Deparment of Chemical engineering at Texas AM University
Here we report the synthesis of continuous HKUST-1 membranes on porous supports via the secondary (i.e., seeded) growth method. A new seeding technique (thermal seeding'') was developed to strongly anchor HKUST-1 seed crystals on porous a-alumina supports. It was found critical to have both organic ligands and copper species in the seed suspension as well as to seed the crystals at elevated temperature. The HKUST-1 seed crystals on the supports were then hydrothermally grown into continuous HKUST-1 films. The formation of cracks and fractures in the films was prevented by controlling the cooling and the drying processes after crystallization. The permeation results of HKUST-1 membranes show moderate separation of hydrogen over other small gas molecules such as carbon dioxide, nitrogen, oxygen, and methane.
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