Towards Fabrication of Low-Cost Carbon/Ceramics Membranes: Substrate Modification

Chan Wang; Yan Huang

doi:10.4028/www.scientific.net/AMR.457-458.372

Paper Titles

Effect of Mg on Microstructure and Mechanical Properties of Copper-Coated Short Carbon Fiber Reinforced Al Alloy Matrix Composite
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Earth Architecture: The Famous Buildings Based on Iranian Architecture in Iran
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Kinetics of Passive Film on Low Carbon Steel in Sodium Nitrate Solution by Numerical Analysis Method
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Preparation and Characterization of Fibrous Hydroxyapatite/Chitosan Nanocomposites with High Hydroxyapatite Dosage
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Towards Fabrication of Low-Cost Carbon/Ceramics Membranes: Substrate Modification
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Research on Existences and Concept System of Reversal Symmetry in Mechanical Systems
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Continuous Element Determination of Barium-Calcium Based on Single Sample of Ferroalloy Series
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Comparison between Finite Element Commercial Codes to Simulate High-Temperature AA5083 Bulge Forming
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Gypsum Dehydration to Alpha-Gypsum in Mixed Chloride Solutions
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 457-458Towards Fabrication of Low-Cost Carbon/Ceramics...

Towards Fabrication of Low-Cost Carbon/Ceramics Membranes: Substrate Modification

Abstract:

This paper presents a novel method for fabrication of carbon membranes for gas separation by mean of surface modification with a conventional 2B pencil on the low-cost macroporous Al2O3 substrate. The resulting membrane was characterized by SEM, which shows that the modified membrane is continuous and uniform without defects. Gas permeation experiments were conducted by single gas measurements (test gas: H2, CO2, O2 and N2) at 20–80 °C under 100–400 kPa. The results show that the pencil lead layer can effectively prevent deep infiltration of precursor solution into the pores of substrate, and that gas transport through carbon membrane follows the molecular sieving mechanism. Based on the modified substrate, the carbon membrane exhibits good permeability (up to the order magnitude of 10-9 mol/m2 s Pa) and separation capability such as H2/N2 of 37.3, CO2/N2 of 11.2, and O2/N2 of 8.3.