Time distribution of adsorption energies, local monolayer capacities, local isotherms and energy distribution functions on catalytic surfaces

摘要

Many catalytic phenomena are governed mainly by the adsorption energy on the heterogenous solid surfaces. A ver ysimple experimental arrangement, based on a combination of Head Space Analysis and Reversed-Flow Gas Chromatography, permits the determination of:(1) the adsorption energies epsilon_i on various active sites i of the surface; (2) the local monolayer capacities for the adsorbed analytes on each i; (3) the local adsorption isotherms theta_i(p,T,epsilon) on the heterogeneous surface; and (4) the adsorption energy distribution function f(epsilon) on the surface.