Structure Analysis of Microporous Activated Carbon by Measurement of the Adsorption Isotherm of Hydrogen Sulfide

概要

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The structures of micropores and supermicropores of activated carbon are discussed on the basis of the results of application of the two-term equation, a=W_<01>/ν^*exp[-(A/βE_<01>)^2]+W_<02>/ν^*exp[-(A/βE_<02>)^2)] to the adsorption isotherms of hydrogen sulfide. The fact that the Dubinin-Radushkevich plots of the adsorption isotherms showed deviation from linearity whereas the two-term equation described them well seems to indicate that the activated carbon used possesses heterogeneous pores, that is, micropores and supermicropores with a flat slit shape. The distribution of radii of supermicropores seems to favor micropores rather than mesopores. It was suggested that the net differential heat of adsorption was more affected by the heterogeneity of pores than by the changes of lateral interactions of adsorbed hydrogen sulfide in relation to the increasing amount adsorbed.
公益社団法人日本薬学会の論文
1982-07-25