Direct synthesis and characterization of mesoporous carbon CMK-3 modified with zirconia applied in energy storage
In this work, we report the synthesis and characterization of the nanostructured carbon material (CMK- 3) modified with zirconium oxide synthesized by a new direct synthesis technique. The aim of this new synthesis method is to avoid the use of inorganic siliceous template (SBA-15), which leads t...
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| Autores principales: | , , , |
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| Formato: | Documento de conferencia publisherVersion |
| Lenguaje: | Inglés |
| Publicado: |
2022
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| Acceso en línea: | http://hdl.handle.net/20.500.12272/6815 |
| Aporte de: |
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I68-R174-20.500.12272-6815 |
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dspace |
| institution |
Universidad Tecnológica Nacional |
| institution_str |
I-68 |
| repository_str |
R-174 |
| collection |
RIA - Repositorio Institucional Abierto (UTN) |
| language |
Inglés |
| topic |
Zirconia CMK-3 Hydrogen Energy |
| spellingShingle |
Zirconia CMK-3 Hydrogen Energy Venosta, Lisandro F. Gómez Costa, Marcos B. Juárez, Juliana M. Anunziata, Oscar A. Direct synthesis and characterization of mesoporous carbon CMK-3 modified with zirconia applied in energy storage |
| topic_facet |
Zirconia CMK-3 Hydrogen Energy |
| description |
In this work, we report the synthesis and characterization of the nanostructured carbon material (CMK-
3) modified with zirconium oxide synthesized by a new direct synthesis technique.
The aim of this new synthesis method is to avoid the use of inorganic siliceous template (SBA-15), which
leads to a shorter and cheaper way to obtain mesoporous carbon, and at the same time incorporate into
the framework Zirconium atoms.
Zirconium oxide dispersed in carbon materials (Zr-CMK-3) were successfully synthesized and
characterized by X-ray diffraction, textural properties, UV-Vis-DRS, XPS, and transmission electron
microscopy analysis.
This material is promising in the application of hydrogen adsorption for energy storage. Zr-CMK-3
material significantly improved H2 storage behavior (4.6% by weight at 77 K and 10 bar) compared to
CMK-3 support. The synthesized material is promising in the absorption of hydrogen by weak bonding
forces (physisorption). A hydrogen adsorption mechanism was proposed and the role of the Zr+4 cation
in hydrogen absorption was discussed.
The activity of the samples to the adsorption of hydrogen molecules is attributed to the improved
dispersion of the zirconium oxide, as well as the appropriate use of support, which can probably disperse
the zirconium on its large surface area, allowing a great dispersion of the zirconium.
The Zr+4 cation is an active species to absorb and store hydrogen through a physisorption process and
the carbon plays an important role in the dispersion and size of metal particles.
A hydrogen storage mechanism on the active surface of the ZrO2 clusters was proposed.
First layer of hydrogen molecules can react with the metal cation through a dihydrogen complex (Kubas
interaction) [1]. The second layer of hydrogen molecules adsorbed around the metal oxide clusters is
due to dipole-like interactions, this is because the metal particle induces dipole forces on the hydrogen
molecule. The other layers could also interact by dipole forces; however, the interaction force decreases
as the distance to the surface increases.
The interaction of the induced dipole in a second layer adsorbs more hydrogen molecules because the
strong interaction of the metal particles takes up dipole-induced forces on the hydrogen molecules. The
upper layers could interact with the metal cation by dipole-induced bonding; however, the interaction
force decreases as the distance to the surface increases.
The procedure for this adsorption is still under investigation and optimization. The hydrogen storage
behavior in Zr-CMK-3 can be optimized by controlling the size of the metal particles, the dispersion and
the nature of the support. |
| format |
Documento de conferencia publisherVersion |
| author |
Venosta, Lisandro F. Gómez Costa, Marcos B. Juárez, Juliana M. Anunziata, Oscar A. |
| author_facet |
Venosta, Lisandro F. Gómez Costa, Marcos B. Juárez, Juliana M. Anunziata, Oscar A. |
| author_sort |
Venosta, Lisandro F. |
| title |
Direct synthesis and characterization of mesoporous carbon CMK-3 modified with zirconia applied in energy storage |
| title_short |
Direct synthesis and characterization of mesoporous carbon CMK-3 modified with zirconia applied in energy storage |
| title_full |
Direct synthesis and characterization of mesoporous carbon CMK-3 modified with zirconia applied in energy storage |
| title_fullStr |
Direct synthesis and characterization of mesoporous carbon CMK-3 modified with zirconia applied in energy storage |
| title_full_unstemmed |
Direct synthesis and characterization of mesoporous carbon CMK-3 modified with zirconia applied in energy storage |
| title_sort |
direct synthesis and characterization of mesoporous carbon cmk-3 modified with zirconia applied in energy storage |
| publishDate |
2022 |
| url |
http://hdl.handle.net/20.500.12272/6815 |
| work_keys_str_mv |
AT venostalisandrof directsynthesisandcharacterizationofmesoporouscarboncmk3modifiedwithzirconiaappliedinenergystorage AT gomezcostamarcosb directsynthesisandcharacterizationofmesoporouscarboncmk3modifiedwithzirconiaappliedinenergystorage AT juarezjulianam directsynthesisandcharacterizationofmesoporouscarboncmk3modifiedwithzirconiaappliedinenergystorage AT anunziataoscara directsynthesisandcharacterizationofmesoporouscarboncmk3modifiedwithzirconiaappliedinenergystorage |
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Repositorios |
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1764820553231761412 |