Citation: Zhi Hui Zhou, Jian Hua Yang, Li Feng Chang, Yan Zhang, Wei Guo Sun, Jin Qu Wang. Novel preparation of NaA/carbon nanocomposite thin films with high permeance for CO₂/CH₄ separation[J]. Chinese Chemical Letters, ;2007, 18(4): 455-457. doi: 10.1016/j.cclet.2007.01.039 shu

Novel preparation of NaA/carbon nanocomposite thin films with high permeance for CO₂/CH₄ separation

State Key Laboratory of Fine Chemicals, Institute of Adsorption and Inorganic Membrane, Dalian University of Technology, Dalian 116012, PR China

Received Date: 5 July 2006

Fund Project: We are grateful for the financial support from the National Natural Science Foundation of China (Nos. 20176004 and 20606004).

Novel NaA/carbon nanocomposite thin films were successfully prepared on a porous α-Al₂O₃ substrate by incorporating nanosized NaA zeolite into novolak-type phenolic resin. The prepared films were characterized by XRD, SEM and single gas permeation tests. The NaA zeolite/carbon nanocomposite thin films exhibited that the ideal separation factor of CO₂/CH₄ was 28.4and the carbon dioxide flux was 3.39×10^-7 mol/(Pa m² s) at room temperature and under a pressure difference of 100 kPa, which was two orders of magnitude higher than that of pure carbon membrane prepared at the same procedures and conditions as those of composite films. From the SEM images, the films were continuous and highly intergrown. Compared with carbon membranes, the thickness of nanocomposite films was drastically decreased, which was helpful to reduce the diffusion resistance and increase the flux of gas permeance.
- Nanocomposite,
- Thin films,
- High performance,
- Gas separation
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