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Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties

This work presents two easy ways for preparing nanostructured mesoporous composites by interconnecting and combining SBA-15 with mixed oxides derived from a calcined Mg–Al hydrotalcite. Two different Mg–Al hydrotalcite addition procedures were implemented, either after or during the SBA-15 synthesis...

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Autores principales: Pérez-Verdejo, Amaury, Sampieri, Alvaro, Pfeiffer, Heriberto, Ruiz-Reyes, Mayra, Santamaría, Juana-Deisy, Fetter, Geolar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4143113/
https://www.ncbi.nlm.nih.gov/pubmed/25161858
http://dx.doi.org/10.3762/bjnano.5.136
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author Pérez-Verdejo, Amaury
Sampieri, Alvaro
Pfeiffer, Heriberto
Ruiz-Reyes, Mayra
Santamaría, Juana-Deisy
Fetter, Geolar
author_facet Pérez-Verdejo, Amaury
Sampieri, Alvaro
Pfeiffer, Heriberto
Ruiz-Reyes, Mayra
Santamaría, Juana-Deisy
Fetter, Geolar
author_sort Pérez-Verdejo, Amaury
collection PubMed
description This work presents two easy ways for preparing nanostructured mesoporous composites by interconnecting and combining SBA-15 with mixed oxides derived from a calcined Mg–Al hydrotalcite. Two different Mg–Al hydrotalcite addition procedures were implemented, either after or during the SBA-15 synthesis (in situ method). The first procedure, i.e., the post-synthesis method, produces a composite material with Mg–Al mixed oxides homogeneously dispersed on the SBA-15 nanoporous surface. The resulting composites present textural properties similar to the SBA-15. On the other hand, with the second procedure (in situ method), Mg and Al mixed oxides occur on the porous composite, which displays a cauliflower morphology. This is an important microporosity contribution and micro and mesoporous surfaces coexist in almost the same proportion. Furthermore, the nanostructured mesoporous composites present an extraordinary water vapor sorption capacity. Such composites might be utilized as as acid-base catalysts, adsorbents, sensors or storage nanomaterials.
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spelling pubmed-41431132014-08-26 Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties Pérez-Verdejo, Amaury Sampieri, Alvaro Pfeiffer, Heriberto Ruiz-Reyes, Mayra Santamaría, Juana-Deisy Fetter, Geolar Beilstein J Nanotechnol Full Research Paper This work presents two easy ways for preparing nanostructured mesoporous composites by interconnecting and combining SBA-15 with mixed oxides derived from a calcined Mg–Al hydrotalcite. Two different Mg–Al hydrotalcite addition procedures were implemented, either after or during the SBA-15 synthesis (in situ method). The first procedure, i.e., the post-synthesis method, produces a composite material with Mg–Al mixed oxides homogeneously dispersed on the SBA-15 nanoporous surface. The resulting composites present textural properties similar to the SBA-15. On the other hand, with the second procedure (in situ method), Mg and Al mixed oxides occur on the porous composite, which displays a cauliflower morphology. This is an important microporosity contribution and micro and mesoporous surfaces coexist in almost the same proportion. Furthermore, the nanostructured mesoporous composites present an extraordinary water vapor sorption capacity. Such composites might be utilized as as acid-base catalysts, adsorbents, sensors or storage nanomaterials. Beilstein-Institut 2014-08-07 /pmc/articles/PMC4143113/ /pubmed/25161858 http://dx.doi.org/10.3762/bjnano.5.136 Text en Copyright © 2014, Pérez-Verdejo et al. https://creativecommons.org/licenses/by/2.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Full Research Paper
Pérez-Verdejo, Amaury
Sampieri, Alvaro
Pfeiffer, Heriberto
Ruiz-Reyes, Mayra
Santamaría, Juana-Deisy
Fetter, Geolar
Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties
title Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties
title_full Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties
title_fullStr Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties
title_full_unstemmed Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties
title_short Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties
title_sort nanoporous composites prepared by a combination of sba-15 with mg–al mixed oxides. water vapor sorption properties
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4143113/
https://www.ncbi.nlm.nih.gov/pubmed/25161858
http://dx.doi.org/10.3762/bjnano.5.136
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