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The Relationships between the Porosity of Activated Carbon and Hydrogen Adsorption Capacity  

JIN, Hangkyo (Applied Chemistry & Engineering Division, Korea Research Institute of Chemical Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.14, no.4, 2003 , pp. 305-312 More about this Journal
Abstract
A study is presented of the adsorption capacity of a number of different activated carbons for hydrogen at 100 bar aad 298 K. The hydrogen adsorption isotherm was measured by isothermal gravimetric analysis, using a microbalance. The effect of activated carbon's porosity on hydrogen adsorption capacity is surveyed. It is concluded that hydrogen adsorption capacity of activated carbon is lineally increased according to the increase of specific surface area and total pore volume, It seems that microporosity is more contributive than mesoporosity. Most of the adsorbed quantity is due to physical adsorption and chemisorption is negligible, In this work, 0.79 wt.% of hydrogen adsorption capacity is reached.
Keywords
Activated carbon; Hydrogen; Adsorption; Porosity;
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