Mostrar el registro sencillo del ítem
dc.contributor.author
Villarroel Rocha, Jhonny
dc.contributor.author
Barrera, Deicy
dc.contributor.author
Sapag, Manuel Karim
dc.date.available
2018-01-03T18:47:10Z
dc.date.issued
2014-12
dc.identifier.citation
Villarroel Rocha, Jhonny; Barrera, Deicy; Sapag, Manuel Karim; Introducing a self-consistent test and the corresponding modification in the Barrett, Joyner and Halenda method for pore-size determination; Elsevier; Microporous and Mesoporous Materials; 200; 12-2014; 68-78
dc.identifier.issn
1387-1811
dc.identifier.uri
http://hdl.handle.net/11336/32158
dc.description.abstract
A standard method to obtain the mesopore size distribution of adsorbents is the Barrett, Joyner and Halenda (BJH) analysis of the N2 adsorption?desorption isotherm at 77 K. The availability, over the last two decades, of well-defined model adsorbents in the mesopore range, together with other forms of isotherm analysis with the help of the Density Functional Theory (DFT) has shown that the BJH method tended to underestimate the pore-width when they are smaller than 10 nm. Regarding this fact, we have reported an improved BJH method, where we have remarked that the reconstruction of the adsorption?desorption isotherm from the BJH results leads to some inconsistency. We therefore proposed a simple means to cancel the mentioned discrepancy and inconsistency. This correction can be made by simply adding a corrective term to the standard BJH equation, which value is selected to meet a self-consistent criterion, i.e. the reconstructed isotherm should fit the original one. In the first article, the method was applied for some ordered mesoporous materials (OMM) synthesized in our laboratory, showing only the results without major details. In this work, we validate the test for other samples, in other pore size ranges, introducing some remarks in theoretical aspects and in the importance of obtaining and taking into account the micropore volume. Finally, a detailed procedure to apply the proposal method using only the experimental data of the analysis is presented.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ordered Mesoporus Materials
dc.subject
Mesopores Size Distribution
dc.subject
Nitrogen Adsorption-Desorption Isotherms
dc.subject
Kelvin Equation
dc.subject.classification
Nano-materiales
dc.subject.classification
Nanotecnología
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.subject.classification
Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Introducing a self-consistent test and the corresponding modification in the Barrett, Joyner and Halenda method for pore-size determination
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-12T18:38:12Z
dc.journal.volume
200
dc.journal.pagination
68-78
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Villarroel Rocha, Jhonny. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; Argentina
dc.description.fil
Fil: Barrera, Deicy. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; Argentina
dc.description.fil
Fil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; Argentina
dc.journal.title
Microporous and Mesoporous Materials
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1387181114004430
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.micromeso.2014.08.017
Archivos asociados