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SummaryThe measurement of local (homogeneous) adsorption energies ci, local monolayer capacities, c max, local adsorption isotherms, Oi(p, T, e), and probability density functions for adsorption, f(e) and ~(e; t), can be used to study the mechanism of adsorption of five gaseous hydrocarbons on the heterogeneous surface of magnesium oxide.The method does not use analytical or numerical solutions of a classical integral equation comprising f(c) as unknown, but it depends on a time function of gas chromatographic peaks obtained by short flow-reversals of the carrier gas.The results for adsorption of ethane, ethylene,acetylene, propene, and 1-butene on MgO, in the absence and presence of 03 are given and discussed on the basis of a mechanism proposed earlier for argon on titatium dioxide.

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