Adsorption Equilibria of Water Vapor on Zeolite 3A, Zeolite 13X, and Dealuminated Y Zeolite

The adsorption equilibria of water vapor on zeolite 3A, zeolite 13X, and dealuminated Y zeolite (DAY) were measured using a volumetric method. Equilibrium experiments were conducted at 293.15, 303.15, and 313.15 K and at relative pressure ( P / P s ) up to 0.95. Experimental data were correlated using Aranovich–Donohue and Frenkel–Halsey–Hill models, using Langmuir, Toth, UNILAN, and Sips isotherms.