Preparation and Characterization of Hollow Fiber Carbon Membranes from Cellulose Acetate Precursors
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- 作者：Xuezhong He ; Jon Arvid Lie ; Edel Sheridan ; May-Britt Ha虉gg
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2011
- 出版时间：February 16, 2011
- 年：2011
- 卷：50
- 期：4
- 页码：2080-2087
- 全文大小：1055K
- 年卷期：v.50,no.4(February 16, 2011)
- ISSN：1520-5045
文摘
Hollow fiber carbon membranes (HFCMs) were prepared from deacetylated cellulose acetate precursors using a multidwell carbonization protocol. FTIR, scanning electron microscopy, and thermogravimetric analysis鈭抦ass spectrometry were employed to characterize the HFCMs. Gas permeation tests were conducted with single gases (H2, CO2, N2, and CH4) as well as gas mixtures. The single-gas test results indicated that the molecular sieving mechanism dominated in the carbon membrane separation process. The effects and feed pressure on the carbon membrane performance were also investigated. Moreover, the gas-mixture test results indicated that the permeability and selectivity need to be optimized by adjusting the operating conditions (basically temperature) for the membrane process. The aging test result indicates that the permeability of the carbon membrane will decrease over time when it is exposed to the laboratory air.