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Adsorption constants and heats of adsorption of different types of hydrocarbons on zeolitic catalysts have been obtained under cracking reaction conditions, by means of kinetic techniques. The heat of adsorption of a naphthene is very close to the alkane with the same number of carbon–carbon bonds, which in turn is defined by the van der Waals interactions between the hydrocarbon and the zeolite walls...
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