Current Science

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Carbon membranes were prepared using stainless steel supports and evaluated for the separation of two mixtures, i.e. CO2/N2 and CO2/CH4. The effect of seve­ral operating variables, including temperature, pre­ssure and precursor concentration was examined. In this study, carbon membranes were synthesized using a sucrose precursor. Sucrose was subjected to pyrolysis in the temperature range 300–700°C, leading to the complete formation of carbon structure. The gas separation characteristics of the produced membranes were estimated by evaluating CO2, CH2 and N2 permeation. The highest selectivity obtained for CO2/CH4 and CO2/N2 was 1.64 and 1.41 respectively. The emphasis towards CO2/CH4 and CO2/N2 separation is due to their importance and direct relevance to the gas industry processes.

Keywords

Carbon membrane, greenhouse gases, pyrolysis temperature, separation mechanism, sucrose precursor.
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