Sorption of hydrocarbons in silicalite-1 studied by intelligent gravimetry

• Published in: Fluid phase equilibria Vol. 232; no. 1; pp. 149 - 158
• Main Authors: Ban, Hongyan, Gui, Jianzhou, Duan, Linhai, Zhang, Xiaotong, Song, Lijuan, Sun, Zhaolin
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 25.05.2005; Elsevier Science
• Subjects: Adsorption; Chemistry; Diffusion; Exact sciences and technology; General and physical chemistry; Silicalite-1; Solid-liquid interface; Surface physical chemistry; Thermodynamics; Thermodynamics; TG; Adsorption; Diffusion; Silicalite-1; Gravimetric analysis; Liquid solid interface; Transport properties; Hydrocarbon; Liquid solid adsorption; Thermogravimetry; Zeolite; p-Xylene; Benzene; Cyclohexane; Thermal analysis; Cyclopentane
• ISSN: 0378-3812; 1879-0224
• DOI: 10.1016/j.fluid.2005.03.024

Adsorption and desorption isotherms, adsorption kinetics and TG (thermogravimetry) curves of cyclopentane, cyclohexane, benzene, and p-xylene in silicalite-1 have been measured by using intelligent gravimetric analyzer (IGA). The thermodynamic and kinetic properties of the systems, such as the heats of sorption, free energies of sorption, entropy changes, and the diffusion coefficients, have been derived from these measurements. The results suggest that the size and configuration of sorbate molecules play a critical role on the adsorption and diffusion behaviour of the systems. Tiny changes in the size and the shape of sorbate molecules can result in a significant difference in the adsorption properties.