Abstract

AGUILAR ARMENTA, Gelacio  and  PATINO IGLESIAS, María Eugenia. Influencia del intercambio iónico de clinoptilolita natural en la cinética de adsorción de CO₂, N₂ y CH₄ a 20 °C. Rev. Soc. Quím. Méx [online]. 2002, vol.46, n.4, pp.324-329. ISSN 0583-7693.

In this work, the adsorption kinetics of pure CO₂, N₂ y CH₄ on natural clinoptilolite (ZSL) from Villa de Reyes, San Luis Potosi, Mexico, and on clinoptilolite samples exchanged partially with Na⁺, K⁺, Ca²⁺ y H⁺ (ZSL-Na, ZSL-K, ZSL-Ca, ZSL-H) was studied at 20 °C using a high volumetric system. The adsorption uptake for the ZSL-Na, ZSL-K, ZSL-Ca, and ZSL samples, at short contact times, decreased in the order CO₂ > N₂ > CH₄, whereas for the ZSL-H sample decreased in the order CO₂ > CH₄ > N₂. The ZSL-Ca y ZSL-Na samples could be recommended for the separation of CO₂ / CH₄ and N₂ / CH₄ mixtures.

Keywords : Natural zeolites; adsorption; kinetics; clinoptilolite; diffusion.