This paper describes a modern version of the volumetric apparatus which was used for measuring gas-solid equilibrium data. It also presents adsorption data for methane, ethane, ethylene, and propane at 38 and 149 °C on Kureha beads (GP Grade), an attrition-resistant activated carbon. The new apparatus was validated with literature data for the ethane-ethylene system on a molecular sieve (13X), and excellent agreement was obtained. The vacancy solution model was used for correlating pure-component isotherms, and excellent agreement was obtained.

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Experimental equilibrium isotherms, Henry's law constants, and heats of sorption are reported for n-hexane, benzene, toluene, p-xylene, mesitylene, naphthalene, trimethylbenzene (TMP), and hexamethylbenzene (HMB) in La-exchanged zeolite Y (Si/Al = 1.8). Henry's law constants and energies of adsorption are substantially smaller than those for NaX zeolite, reflecting the absence of accessible cations in LaY. These data provide a basis for the estimation of adsorbed phase concentrations of the relevant hydrocarbons on REY cracking catalysts under reaction conditions.