Coefficient calculation algorithm of diffusion of water in Cuban natural zeolites

Authors

  • Jesús E. Hernández Ruiz Universidad Central de Las Villas
  • Carlos de las Pozas del Río Centro Nacional de Investigaciones Científicas
  • Miguel Autie Pérez Centro Nacional de Investigaciones Científicas
  • Gabriel Montesinos Figueroa Centro Nacional de Investigaciones Científicas
  • Marisol Carreras Glacial Centro Nacional de Investigaciones Científicas

Abstract

In the present paper the study of the kinetics of water adsorption at three of the more investigated Cuban natural zeolites is described. In the introductory part, the necessity, importance and the novelty of this study are argued. The calculation of transfer and diffusion water vapor coefficients in this materials were obtained using the elements of the substance transfer theory developed by Ruthven for the

case of the porous materials and the theory of the volumetric filling of micropores developed by Dubinin. The graph-numeric algorithm was developed for the area of prevalence the non-specific interactions of Dubinin's model. This calculation method was applied to the study of the vapor water adsorption kinetics by the zeolites from Tasajera, Castilla and Palmarito deposits in their different cationic forms. The experimental data was obtained by means of a classic static volumetric device. The water vapor transfer and diffusion coefficients of the studied samples were in the same order of the literature reported for materials of this nature. In the calculations of coefficients, the granulometric radius of the samples were used instead of the radius of the zeolitic crystal in agreement with the different reported approaches about the restrictive stage of the intracristaline diffusion for the studied kinetic process.

Published

2022-06-01

How to Cite

Hernández Ruiz, J. E. ., de las Pozas del Río, C. ., Autie Pérez, M. ., Montesinos Figueroa, G. ., & Carreras Glacial, M. . (2022). Coefficient calculation algorithm of diffusion of water in Cuban natural zeolites. NATIONAL CENTER FOR SCIENTIFIC RESEARCH (CENIC) CHEMICAL SCIENCES JOURNAL, 32(3), 153-157. Retrieved from https://revista.cnic.cu/index.php/RevQuim/article/view/1668

Issue

Section

Research articles