Hydro-adsorption and Textural Properties Study of Microporous Zeolites by Dynamic Laser Speckle Technique

Hydro-adsorption and Textural Properties Study of Microporous Zeolites by Dynamic Laser Speckle Technique

Desiccants, catalysts, and gas separation are all examples of adsorption phenomena in technology. Its applications are determined by the solid adsorbent’s textural properties as well as the form of liquid or gas adsorbed. As a result, finding simple tools to quantify these properties is critical. The most popular methods for determining the precise surface area and pore size distribution are physicochemical methods based on N2 adsorption. These processes, however, have certain drawbacks when it comes to microporous materials. This chapter demonstrates how to quantify and compare the hydro-adsorption potential of a microporous natural zeolite and its acidic, simple, and calcinated forms using the Dynamic Laser Speckle (DLS) technique. The DLS experimental results show the temporal evolution of the speckle patterns based on the samples’ water adsorption mechanism. An improved Peleg’s equation is used to change the optical results obtained from the speckle patterns. This new method of adsorption of water from solids allows for a correlation with particular surface areas, with parameters obtained from DLS results measured against those determined using different traditional isotherms using the N2 adsorption-desorption method.

Author (s) Details

Ruth D. Mojica-Sepulveda
Centro de Investigaciones Opticas (CIOp), CONICET-CCT La Plata-UNLP-CICPBA, Gonnet-La Plata, Argentina.

Luís J. Mendoza-Herrera
Centro de Investigaciones Opticas (CIOp), CONICET-CCT La Plata-UNLP-CICPBA, Gonnet-La Plata, Argentina and Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), La Plata, Argentina.

Eduardo Grumel
Centro de Investigaciones Opticas (CIOp), CONICET-CCT La Plata-UNLP-CICPBA, Gonnet-La Plata, Argentina and Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), La Plata, Argentina.

Delia B. Soria
Centro de Química Inorgánica (CEQUINOR), CONICET-CCT La Plata and UNLP, La Plata, Argentina.

Carmen I. Cabello
Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), La Plata, Argentina, Centro de Investigación y Desarrollo en Ciencias Aplicadas, Dr. J. J. Ronco (CINDECA) CONICET – CCT La Plata and UNLP, (1900) La Plata, Argentina and CICPBA, Comisión Investigaciones Científicas Provincia Buenos Aires, Argentina.

Marcelo Trivi
Centro de Investigaciones Opticas (CIOp), CONICET-CCT La Plata-UNLP-CICPBA, Gonnet-La Plata, Argentina, Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), La Plata, Argentina and CICPBA, Comisión Investigaciones Científicas Provincia Buenos Aires, Argentina.

Professor Myrian Tebaldi
Centro de Investigaciones Opticas (CIOp), CONICET-CCT La Plata-UNLP-CICPBA, Gonnet-La Plata, Argentina and Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), La Plata, Argentina.

View Book :- https://stm.bookpi.org/CPCS-V8/issue/view/43

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