Development of carbon membrane for CO<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/CH<sub>4</sub> separation
Abstract
Carbon membranes were prepared using stainless steel supports and evaluated for the separation of two mixtures, i.e.CO 2 /N 2 and CO 2 /CH 4 .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 CO 2 , CH 4 and N 2 permeation.The highest selectivity obtained for CO 2 /CH 4 and CO 2 /N 2 was 1.64 and 1.41 respectively.The emphasis towards CO 2 /CH 4 and CO 2 /N 2 separation is due to their importance and direct relevance to the gas industry processes.
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