Using coconut shell activated carbon as raw material, series of carbon molecular sieve were prepared by gas-phase carbon deposition with benzene, cyclohexane and low-carbon alcohols as depositing agents, and by liquid-phase carbon deposition with glucose, sucrose and soluble starch as depositing agents. Their porous structures were characterized by N2 adsorption-desorption measurements and their adsorption performance for CO2, CH4 and N2 were measured by volumetric method. Results showed that the decrease of CH4 and N2 adsorption amount was much larger than the decrease of CO2 adsorption amount with increasing the amount of depositing agents for the samples deposited with benzene and cyclohexane. The existence of hydroxyl groups could decrease the effect of gas-phase carbon deposition. For the samples prepared by liquid-phase carbon deposition with glucose, sucrose and soluble starch as depositing agents, the adsorption amounts of CH4, CO2 and N2 did not change significantly. These results were related to the changes of the porous structure.

Adsorption performance of carbon molecular sieve prepared by carbon deposition with several depositing agents

249th National Meeting (2015)

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