E. P. Meshcheryakov, M. P. Shcherbakova-Sandu, S. I. Reshetnikov, I. A. Kurzina, “Alumina-based desiccants modified with potassium, rubidium, and cesium cations: surface properties and kinetics of adsorption”, Mendeleev Commun., 2025, Volume 35, Issue 4,Pages <nobr>490

Communications

Alumina-based desiccants modified with potassium, rubidium, and cesium cations: surface properties and kinetics of adsorption

E. P. Meshcheryakov^a, M. P. Shcherbakova-Sandu^a, S. I. Reshetnikov^b, I. A. Kurzina^a

^a Department of Chemistry, National Research Tomsk State University, 634050 Tomsk, Russian Federation
^b G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation

Abstract: The effect of γ-Al₂O₃ modification with the cations K⁺, Rb⁺, and Cs⁺ on its textural characteristics and acid–base and adsorption properties with respect to water was studied. The kinetics of water vapor adsorption on the test samples was described by the Gluckauf equation to model processes occurring under the influence of internal diffusion. The adsorption capacity of the modified materials was approximately 30–40% higher than that of the unmodified Al₂O₃.

Keywords: alumina, modification, acid–base properties, kinetics, water adsorption.

Received: 28.10.2024
Accepted: 10.01.2025

Language: English

DOI: 10.71267/mencom.7669

	*Supplementary materials:*
		Supplementary_data_1.pdf	613.1 Kb