Adsorption Equilibria of Linear Alkenes onto a Sulphonated Styrene-Divinylbenzene Copolymer

The adsorption equilibrium constants of the alkenes propene, but-1-ene, pent-1-ene, hex-1-ene and hept-1-ene onto the sulphonated styrene-divinylbenzene copolymer Amberlyst 15 were determined by inverse gas chromatography. During the adsorption measurements, catalytic reactions such as the isomerization and oligomerization of alkenes were controlled to see whether or not they occurred on the surface of Amberlyst 15. The physical integrity of the adsorption equilibrium constants determined experimentally for the alkenes was verified by calculation of their adsorption enthalpies and the use of Boudart's rules. The effect of the number of carbon atoms in the alkene molecule on the increase in the adsorption enthalpy onto the sulphonated Amberlyst 15 copolymer was determined.