A. Yu. Chebotov, I. A. Vorakso, I. L. Rastunova, M. B. Rozenkevich
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引用次数: 0
Abstract
Results are presented from studying the permeability of Nafion-type perfluorinated sulfonic cation-exchange membranes used in membrane contact devices (MCDs) for chemical isotopic exchange between water and hydrogen. It is shown that the permeability of a perfluorinated sulfonic cation-exchange membrane grows after modifying it with Fe3+ ions and subsequent regeneration with a nitric acid solution. The best effect is observed for Nafion 212 membrane (50.8 µm), since its permeability is approximately tripled in the 298–343 K range of temperatures. It is shown that the state of a membrane has no effect on the observed energy of activation. Energy Ea = 14 ± 4 kJ/mol indicates that isotopic exchange is controlled by diffusion processes.
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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