Dynamic Laser Speckle Technique as an alternative tool to determine hygroscopic capacity and specific surface area of microporous zeolites

Adsorption phenomena have several technological applications such as desiccants, catalysts, separation of gases, etc. Their uses depend on the textural properties of the solid adsorbent and the type of the adsorbed liquid or gas. Therefore, it is important to determine these properties. The most com...

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Detalles Bibliográficos
Autores principales: Mojica Sepúlveda, Ruth Dary, Mendoza Herrera, Luis Joaquín, Grumel, Eduardo Emilio, Soria, Delia Beatriz, Cabello, Carmen Inés, Trivi, Marcelo Ricardo
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2018
Materias:
Física
Química
Dinamic laser speckle
nitrogen physisorption
specific surface area
BET
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/117179
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-117179
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Química
Dinamic laser speckle
nitrogen physisorption
specific surface area
BET
spellingShingle Física
Química
Dinamic laser speckle
nitrogen physisorption
specific surface area
BET
Mojica Sepúlveda, Ruth Dary
Mendoza Herrera, Luis Joaquín
Grumel, Eduardo Emilio
Soria, Delia Beatriz
Cabello, Carmen Inés
Trivi, Marcelo Ricardo
Dynamic Laser Speckle Technique as an alternative tool to determine hygroscopic capacity and specific surface area of microporous zeolites
topic_facet Física
Química
Dinamic laser speckle
nitrogen physisorption
specific surface area
BET
description Adsorption phenomena have several technological applications such as desiccants, catalysts, separation of gases, etc. Their uses depend on the textural properties of the solid adsorbent and the type of the adsorbed liquid or gas. Therefore, it is important to determine these properties. The most common measurement methods are physicochemical based on adsorption of N2 to determine the surface area and the distribution of pores size. However these techniques present certain limitations for microporous materials. In this paper we propose the use of the Dynamic Laser Speckle (DLS) technique to measure the hygroscopic capacity of a microporous natural zeolite and their modi ed forms. This new approach based on the adsorption of water by solids allows determine their speci c surface area (S). To test the DLS results, we compared the obtained S values to those calculated by different conventional isotherms using the N2 adsorption-desorption method.
format Articulo
Preprint
author Mojica Sepúlveda, Ruth Dary
Mendoza Herrera, Luis Joaquín
Grumel, Eduardo Emilio
Soria, Delia Beatriz
Cabello, Carmen Inés
Trivi, Marcelo Ricardo
author_facet Mojica Sepúlveda, Ruth Dary
Mendoza Herrera, Luis Joaquín
Grumel, Eduardo Emilio
Soria, Delia Beatriz
Cabello, Carmen Inés
Trivi, Marcelo Ricardo
author_sort Mojica Sepúlveda, Ruth Dary
title Dynamic Laser Speckle Technique as an alternative tool to determine hygroscopic capacity and specific surface area of microporous zeolites
title_short Dynamic Laser Speckle Technique as an alternative tool to determine hygroscopic capacity and specific surface area of microporous zeolites
title_full Dynamic Laser Speckle Technique as an alternative tool to determine hygroscopic capacity and specific surface area of microporous zeolites
title_fullStr Dynamic Laser Speckle Technique as an alternative tool to determine hygroscopic capacity and specific surface area of microporous zeolites
title_full_unstemmed Dynamic Laser Speckle Technique as an alternative tool to determine hygroscopic capacity and specific surface area of microporous zeolites
title_sort dynamic laser speckle technique as an alternative tool to determine hygroscopic capacity and specific surface area of microporous zeolites
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/117179
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