Abstract: In this paper,the binary adsorption isotherms of acetone-n-hexane,toluene-n-hexane,benzene-n-hexane and n-pentane-n-hexane on silica gel are presented.The adsorption isotherms for pure gases are also obtained.It will be seen from the experimental results that the adsorption behavior of the vapor mixtures can be predicted from the isotherms of pure components.The extent of predominant adsorption can be predicted from the first layer adsorption heat of the individual pure component.

Key words: Binary gas-solid adsorption, Acetone-n-hexane, Toluene-n-hexane, Benzene-n-hexane, n-Pentane-n-hexane, Adsorption isotherm