supported rhodium catalysts. VIII. Gas-phase adsorption of arenes by

React. Kinet. Catal. Lett., Vol. 31, No. 2, 327-352 (1986) ALPD4-SUPPORTED RHODIUMCATALYSTS. =VIII. GAS-PHASEADSDRPTIONOF ARENESBY GAS-CHRDMATOGRAPHY F.M. Bautista, 3.M. Campelo~, A. Garcia, D. Luna and 3.M. Marinas Department of Organic Chemistry, Faculty of Sciences, Cordoba University, E-14005 Cordoba, Spain Received April 24, 1985 Accepted 3uly 18, 1985 The adsorption of normal and ~-methylated series arenes on rhodium supported ontwo kinds of AIPO4 has been studied by using a gas-solid chromatographic technique. The adsorption process was exothermic (AHadsO) the reiative adsorption constants being fitted to the PaveiichTaft equation in which the eiectricaI effect of the aikyI substituen% is the main infiuence. AAcopGuH~

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