EVALUATION OF SURFACE DISTRIBUTION FUNCTION FOR SOLIDS FROM ACTIVATION PARAMETERS OF CHEMISORPTION

A method of evaluating the distribution function for the nonuniform su rface from the activation energies and preexponential factors of chemi sorption and determining the coefficients of the isokinetic relationsh ip from the moments of these distributions is suggested, The isokineti c temperature and the logarithm of the rate constant for certain organ osilicon compounds, chemisorbed from the gas phase on the surface of p yrogenic silica at a given temperature, are shown to reflect the react ivity of indicated compounds with respect to the active sites at the s urface.